Precise triangulation elevation measurement method, device and system

Abstract

The invention provides a precise triangulation elevation measurement method, device and system. The method comprises the following steps: acquiring a first sight line elevation difference between a first target observation station and a first elevation point and a second sight line elevation difference between the first target observation station and a second elevation point through measurement equipment of the first target observation station; acquiring a third sight line elevation difference between the second target observation station and the first elevation point and a fourth sight line elevation difference between the second target observation station and the second elevation point through measurement equipment of the second target observation station; obtaining a first elevation difference between the second elevation point and the first elevation point according to the second sight line elevation difference and the first sight line elevation difference, obtaining a second elevation difference between the second elevation point and the first elevation point according to the fourth sight line elevation difference and the third sight line elevation difference, and obtaining a second elevation value between the second elevation point and the first elevation point according to the first elevation value of the first elevation point, the first elevation difference and the second elevation difference; and obtaining a second elevation value of the second elevation point. According to the method, the elevation value of the elevation point can be accurately and quickly obtained.

Description

Technical Field

[0001] The present application relates to the field of measurement technology, and in particular to a method, device and system for precise trigonometric height measurement. Background Art

[0002] In some application scenarios, it is necessary to measure the elevation of the measured point. Furthermore, the measured point is a point in a geographical area whose elevation value needs to be obtained.

[0003] In the related art, an instrument is usually set up at a measuring point A with a known elevation, and the elevation difference between the measuring point A and the measured point B is measured by the instrument. Then, an instrument is set up at the measured point B, and the elevation difference between the measured point B and the measuring point A is measured by the instrument at the measured point B. The average value between the two elevation differences is obtained, and the elevation of the measured point B is obtained based on the average value between the elevation differences.

[0004] However, if there is no line of sight between the measuring point A and the measured point B, the elevation difference between the measuring point A and the measured point B cannot be measured by the method of the related art, and thus the elevation of the measured point B cannot be obtained. That is, the method of the related art may have the problem of being unable to obtain the elevation of the measured point. Summary of the invention

[0005] The embodiments of the present application provide a precise trigonometric height measurement method, device and system to solve the problem that the height of the measured point cannot be obtained in the prior art.

[0006] In a first aspect, an embodiment of the present application provides a precision trigonometric height measurement method, comprising: obtaining a first line of sight elevation difference between the first target station and a first elevation point, and a second line of sight elevation difference between the first target station and a second elevation point, by means of a measuring device set up at a first target station; the first elevation point has a first elevation value; obtaining a third line of sight elevation difference between the second target station and the first elevation point, and a fourth line of sight elevation difference between the second target station and the second elevation point, by means of a measuring device set up at a second target station; obtaining the first elevation difference between the second elevation point and the first elevation point based on the second line of sight elevation difference and the first line of sight elevation difference, and obtaining the second elevation difference between the second elevation point and the first elevation point based on the fourth line of sight elevation difference and the third line of sight elevation difference; obtaining the second elevation value of the second elevation point based on the first elevation value, the first elevation difference and the second elevation difference.

[0007] In a second aspect, an embodiment of the present application provides a precision trigonometric height measurement device, including: a first acquisition module, used to acquire a first line of sight elevation difference between the first target station and a first elevation point, and a second line of sight elevation difference between the first target station and a second elevation point, by means of a measuring device set up at a first target station; the first elevation point has a first elevation value; a second acquisition module, used to acquire a third line of sight elevation difference between the second target station and the first elevation point, and a fourth line of sight elevation difference between the second target station and the second elevation point, by means of a measuring device set up at a second target station; a third acquisition module, used to acquire the first elevation difference between the second elevation point and the first elevation point based on the second line of sight elevation difference and the first line of sight elevation difference, and to acquire the second elevation difference between the second elevation point and the first elevation point based on the fourth line of sight elevation difference and the third line of sight elevation difference; a fourth acquisition module, used to obtain the second elevation value of the second elevation point based on the first elevation value, the first elevation difference, and the second elevation difference.

[0008] In a third aspect, an embodiment of the present application also provides a precision trigonometric height measurement system, the system comprising a measuring device and a data processing module; the measuring device is used to obtain a first line of sight elevation difference between a first target station and a first elevation point, and a second line of sight elevation difference between the first target station and a second elevation point; the first elevation point has a first elevation value; the measuring device is also used to obtain a third line of sight elevation difference between a second target station and the first elevation point, and a fourth line of sight elevation difference between the second target station and the second elevation point; the data processing module is used to obtain the first elevation difference between the second elevation point and the first elevation point based on the second line of sight elevation difference and the first line of sight elevation difference, and to obtain the second elevation difference between the second elevation point and the first elevation point based on the fourth line of sight elevation difference and the third line of sight elevation difference; the data processing module is also used to obtain the second elevation value of the second elevation point based on the first elevation value, the first elevation difference and the second elevation difference.

[0009] In a fourth aspect, an embodiment of the present application further provides an electronic device, comprising a processor; and a memory for storing instructions executable by the processor; wherein the processor is configured to execute the instructions to implement the method of the first aspect.

[0010] In a fifth aspect, an embodiment of the present application further provides a computer-readable storage medium, which, when instructions in the computer-readable storage medium are executed by a processor of an electronic device, enables the electronic device to execute the method of the first aspect.

[0011] In the embodiment of the present application, the first sight elevation difference between the first target station and the first elevation point, and the second sight elevation difference between the first target station and the second elevation point are obtained by setting up a measuring device at the first target station; the third sight elevation difference between the second target station and the first elevation point, and the fourth sight elevation difference between the second target station and the second elevation point are obtained by setting up a measuring device at the second target station; the first elevation difference between the second elevation point and the first elevation point is obtained according to the second sight elevation difference and the first sight elevation difference, and the second elevation difference between the second elevation point and the first elevation point is obtained according to the fourth sight elevation difference and the third sight elevation difference; the second elevation value of the second elevation point can be accurately obtained according to the first elevation value of the first elevation point, and the elevation differences between the two sets of the second elevation point and the first elevation point, namely, the first elevation difference and the second elevation difference. The method of this embodiment has the characteristics of high operating efficiency and high precision in measuring elevation differences. Compared with the trigonometric height measurement and geometric leveling methods in the related art, this embodiment has a greater operating efficiency advantage. This embodiment measures the elevation value of the second elevation point of unknown elevation through the measuring equipment of the first target measuring station and the second target measuring station. Based on the method of this embodiment, it is possible to avoid the problem in the related art that the elevation point of known elevation and the elevation point of unknown elevation have no line of sight, resulting in the inability to obtain the elevation value of the elevation point of unknown elevation.

[0012] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0014] Figure 1 This is a schematic diagram of an application scenario of a precise trigonometric height measurement method provided in an embodiment of the present application; Figure 2 It is a flowchart of another method for precise trigonometric height measurement provided by an embodiment of the present application; Figure 3 This is a schematic diagram of a scenario of another precise trigonometric height measurement method provided in an embodiment of the present application; Figure 4is a flowchart of steps for calculating the third elevation value of the third elevation point provided by an embodiment of the present application; Figure 5 is a flowchart of steps for calculating the third elevation value of the third elevation point provided by an embodiment of the present application; Figure 6 It is a flowchart of another method for precise trigonometric height measurement provided by an embodiment of the present application; Figure 7 It is a block diagram of a precise trigonometric height measurement device provided in an embodiment of the present application; Figure 8 It is a block diagram of a precise trigonometric height measurement system provided in an embodiment of the present application; Fig. 9 is a block diagram of an electronic device provided by an embodiment of the present invention; Fig.10 is a block diagram of another electronic device according to another embodiment of the present invention. DETAILED DESCRIPTION

[0015] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0016] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally a class, and the number of objects is not limited. For example, the first object can be one or more. In addition, the term "and / or" in the specification and claims is used to describe the association relationship of associated objects, indicating that three kinds of relationships can exist, for example, A and / or B can be represented: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the front and back associated objects are a kind of "or" relationship. In the embodiment of the present application, the term "multiple" refers to two or more, and other quantifiers are similar.

[0017] Figure 1 This is a precise trigonometric height measurement method provided by the embodiment of the present application, referring to Figure 1 , the method may include the following steps: Step 101, obtaining a first sight line elevation difference between the first target station and a first elevation point, and a second sight line elevation difference between the first target station and a second elevation point by means of a measuring device installed at a first target station.

[0018] The first elevation point has a first elevation value. For example, the measuring device may be a total station. The target measuring station is a location where the measuring device is set during measurement.

[0019] For example, a first sight distance between the first target station and the first elevation point is approximately equal to a second sight distance between the first target station and the second elevation point. Specifically, a difference between the first sight distance and the second sight distance is less than or equal to a preset sight distance threshold.

[0020] Step 102, obtaining a third sight line elevation difference between the second target station and the first elevation point, and a fourth sight line elevation difference between the second target station and the second elevation point by means of a measuring device installed at the second target station.

[0021] The first target measuring station and the second target measuring station are free virtual measuring stations, the first elevation point is an elevation point with a known elevation value, and the second elevation point is an elevation point with an elevation value to be measured.

[0022] The third sight distance between the second target station and the first elevation point is approximately equal to the fourth sight distance between the second target station and the second elevation point. Specifically, the difference between the third sight distance and the fourth sight distance is less than or equal to the preset sight distance threshold.

[0023] Step 103, obtaining a first elevation difference between the second elevation point and the first elevation point according to the second sight line elevation difference and the first sight line elevation difference, and obtaining a second elevation difference between the second elevation point and the first elevation point according to the fourth sight line elevation difference and the third sight line elevation difference.

[0024] The difference between the second sight line elevation difference and the first sight line elevation difference is obtained, and the difference is determined as the first elevation difference between the second elevation point and the first elevation point.

[0025] The difference between the fourth sight line elevation difference and the third sight line elevation difference is obtained, and the difference is determined as the second elevation difference between the second elevation point and the first elevation point.

[0026] Step 104, obtaining a second elevation value of a second elevation point according to the first elevation value, the first elevation difference and the second elevation difference.

[0027] For example, an average value between the first elevation difference and the second elevation difference is obtained, and the average value between the first elevation difference and the second elevation difference and the first elevation value are summed to obtain a summation result. The summation result is determined as the second elevation value of the second elevation point.

[0028] For example, based on the precise trigonometric height measurement method of this embodiment, the instrument can be set up at a free virtual survey station (including a first target survey station and a second target survey station), and the known elevation point (first elevation point) and the unknown elevation point (second elevation point) can be observed simultaneously or within a preset time period by the instrument set up at the free virtual survey station to calculate the elevation difference between the two elevation points. Then, the elevation value of the unknown elevation point (second elevation point) is calculated by the elevation value of the known elevation point (the first elevation value of the first elevation point) and the elevation difference.

[0029] Furthermore, based on the precise trigonometric height measurement method of this embodiment, multiple unknown elevation points can be observed simultaneously and continuously, or after two or more observations, the difference between the elevation differences obtained from the two or more observations can be calculated, and the accuracy of the measurement results can be evaluated based on the difference between the elevation differences obtained from the two or more observations.

[0030] For example, when using the precision trigonometric height measurement method to observe elevation points, ensure that the sight distance lengths between the same target station and the two elevation points are basically equal. In other words, the difference in sight distance between the same target station and the two elevation points should not be too large, or the difference in sight distance is less than or equal to the sight distance difference threshold. Based on this setting, the influence of refraction difference on the observation results can be reduced, thereby improving the accuracy of the elevation value calculation results of the elevation points to be measured.

[0031] The precise trigonometric height measurement technology method of this embodiment can be applied to various engineering measurement fields of high-level height measurement. For example, in the field of precise satellite positioning measurement, the longitude and latitude information of the point to be measured can be obtained through satellite positioning technology; the point to be measured can be used as an elevation point, and the elevation value of the point to be measured can be obtained based on the method of this embodiment. Thus, in combination with satellite positioning technology, the three-dimensional information of the point to be measured can be obtained, and the three-dimensional information includes longitude and latitude information, as well as elevation values. Based on the method of this embodiment, a high-precision and high-efficiency height measurement result can be provided for the precise satellite positioning strategy technology, effectively improving the side length projection accuracy observed by the precise satellite positioning measurement technology.

[0032] The trigonometric height measurement method in the related art is to set up an instrument at a known elevation point A, observe the elevation difference of an unknown elevation point B through the instrument set up at elevation point A, and calculate the elevation of elevation point B based on the elevation difference; then set up the instrument at elevation point B to observe the elevation difference of elevation point A, take the average of the two elevation differences, and calculate the elevation of elevation point B based on the average. However, if there is no line of sight between elevation point A and elevation point B, the elevation value of elevation point B cannot be obtained according to this method.

[0033] In this embodiment, the first sight elevation difference between the first target station and the first elevation point, and the second sight elevation difference between the first target station and the second elevation point are obtained by setting up a measuring device at the first target station; the third sight elevation difference between the second target station and the first elevation point, and the fourth sight elevation difference between the second target station and the second elevation point are obtained by setting up a measuring device at the second target station; the first elevation difference between the second elevation point and the first elevation point is obtained according to the second sight elevation difference and the first sight elevation difference, and the second elevation difference between the second elevation point and the first elevation point is obtained according to the fourth sight elevation difference and the third sight elevation difference; the second elevation value of the second elevation point can be accurately obtained according to the first elevation value of the first elevation point, and the elevation differences between the two sets of the first elevation difference and the second elevation difference between the second elevation point and the first elevation point. The method of this embodiment has the characteristics of high operating efficiency and high precision in measuring elevation differences, that is, compared with the trigonometric height measurement and geometric leveling measurement methods in the related art, this embodiment has a greater operating efficiency advantage. In addition, this embodiment measures the elevation value of the second elevation point of unknown elevation through the measuring equipment of the first target measuring station and the second target measuring station. Based on the method of this embodiment, it is possible to avoid the problem in the related art that the elevation point of known elevation and the elevation point of unknown elevation have no line of sight, resulting in the inability to obtain the elevation value of the elevation point of unknown elevation.

[0034] Reference Figure 2 The method may further include the following steps: Step 201, determining a plurality of elevation points to be measured, and dividing the plurality of elevation points to be measured into a plurality of groups to be measured.

[0035] For example, see Figure 3 The elevation points to be measured include N elevation points to be measured from B1 to BN, wherein each elevation point to be measured has corresponding position information.

[0036] According to the position information of the elevation points to be measured, the N elevation points to be measured can be divided into a plurality of groups to be measured. For example, according to the position information of the elevation points to be measured, the order of the N elevation points to be measured along a preset direction is obtained, and according to the order result, the N elevation points to be measured are divided into a plurality of groups to be measured.

[0037] The number of the to-be-measured elevation points in each to-be-measured group may be equal or unequal. For example, multiple to-be-measured elevation points within a preset range may be divided into the same to-be-measured group.

[0038] Step 202: for each group to be measured, determine the elevation points to be measured in the group to be measured as a first elevation point, a second elevation point, and a third elevation point, respectively.

[0039] For example, the elevation points to be measured in the group to be measured can be determined as the first elevation point, the second elevation point and the third elevation point according to the position information of each elevation point to be measured in the group to be measured. For example, the points to be measured can be determined as the first elevation point, the second elevation point and the third elevation point in sequence according to the arrangement order of each elevation point to be measured in the group to be measured in a preset direction.

[0040] For example, when there are only two elevation points to be measured in the group to be measured, the elevation points to be measured are respectively determined as the first elevation point and the second elevation point.

[0041] Among them, in two adjacent groups to be measured, some of the elevation points to be measured in the former group to be measured are the same as some of the elevation points to be measured in the latter group to be measured.

[0042] The number of identical elevation points to be measured in two adjacent groups to be measured can be set according to requirements, for example, it can be one, it can be two, or it can be any other number, which is not limited here.

[0043] In two adjacent groups to be measured, some of the elevation points to be measured in the previous group to be measured are the same as some of the elevation points to be measured in the next group to be measured. Therefore, after calculating the elevation values ​​of each elevation point to be measured in the previous group to be measured according to the method of the aforementioned embodiment, when calculating the elevation values ​​of each elevation point to be measured in the next group to be measured, the elevation points that are the same as those in the previous group to be measured can be used as elevation points with known elevation values, and the elevation values ​​of other elevation points with unknown elevation values ​​can be calculated based on the elevation points with known elevation values.

[0044] For example, the groups to be measured can be sorted according to the position information of the elevation points to be measured in the groups to be measured, for example, according to the position arrangement of the groups to be measured in a preset direction, and the elevation points in multiple groups to be measured can be measured in sequence according to the sorting sequence of the groups to be measured.

[0045] For example, refer to Figure 3 , the elevation point to be measured , and As a group, it can be marked as the first group to be measured; the elevation points to be measured , and The two adjacent groups to be measured have the same elevation points to be measured. and .

[0046] Among them, the elevation point to be measured is the first elevation point whose first elevation value is known. In the first group to be measured, according to the first elevation point The first elevation value of , get the second elevation point The second elevation value and the third elevation point The third elevation value.

[0047] After measuring the elevation values ​​of each elevation point to be measured in the first group to be measured, start measuring the elevation values ​​of each elevation point to be measured in the second group to be measured. Specifically, the elevation point B2 to be measured, whose elevation value has been calculated, is determined as the first elevation point in the second group to be measured. Based on the first elevation point, according to the method of this embodiment, the third elevation point B2 in the second group to be measured is calculated. The third elevation value of . And so on, the elevation values ​​of all the elevation points to be measured in all the groups to be measured are obtained.

[0048] Step 203, obtaining a first sight line elevation difference between the first target station and the first elevation point, and a second sight line elevation difference between the first target station and the second elevation point by using a measuring device installed at the first target station.

[0049] Among them, the first elevation point has a first elevation value.

[0050] The method of this step can refer to the description of the aforementioned step 101, which will not be repeated here.

[0051] Step 204, obtaining a third sight line elevation difference between the second target station and the first elevation point, and a fourth sight line elevation difference between the second target station and the second elevation point by using a measuring device installed at the second target station.

[0052] The method of this step has been described in the aforementioned step 102 and will not be repeated here.

[0053] Step 205, obtaining a first elevation difference between the second elevation point and the first elevation point based on the second sight line elevation difference and the first sight line elevation difference, and obtaining a second elevation difference between the second elevation point and the first elevation point based on the fourth sight line elevation difference and the third sight line elevation difference.

[0054] The method of this step has been described in the aforementioned step 103 and will not be repeated here.

[0055] Step 206, obtaining a second elevation value of a second elevation point according to the first elevation value, the first elevation difference and the second elevation difference.

[0056] The method of this step has been described in the aforementioned step 104 and will not be repeated here.

[0057] For example, step 206 may include the following sub-steps: Sub-step 2061, obtaining the difference between the first elevation difference and the second elevation difference.

[0058] The first elevation difference represents the elevation difference between the first elevation point and the second elevation point obtained by the measuring equipment of the first target measuring station; the second elevation difference represents the elevation difference between the first elevation point and the second elevation point obtained by the measuring equipment of the second target measuring station. The difference between the first elevation difference and the second elevation difference can reflect the difference between the elevation difference between the first elevation point and the second elevation point measured by the surveying equipment of the first target surveying station and the elevation difference between the first elevation point and the second elevation point measured by the surveying equipment of the second target surveying station.

[0059] Sub-step 2062, if the difference between the first elevation difference and the second elevation difference is less than or equal to the elevation difference threshold, then obtaining the second elevation value of the second elevation point according to the first elevation value, the first elevation difference and the second elevation difference.

[0060] If the difference between the first elevation difference and the second elevation difference is less than or equal to the elevation difference threshold, it means that the elevation difference between the first elevation point and the second elevation point measured by the surveying equipment of the first target survey station is small enough from the elevation difference between the first elevation point and the second elevation point measured by the surveying equipment of the second target survey station, indicating that the measurement error is small. In this case, the second elevation value of the second elevation point is obtained according to the first elevation value, the first elevation difference and the second elevation difference, and the second elevation value obtained thereby has high accuracy.

[0061] In sub-step 2063, if the difference between the first elevation difference and the second elevation difference is greater than the elevation difference threshold, the process is re-entered to obtain the first line-of-sight elevation difference between the first target station and the first elevation point, and the second line-of-sight elevation difference between the first target station and the second elevation point by means of the measuring equipment set up at the first target station, so as to obtain a new first elevation difference and a new second elevation difference, until a new fifth difference between the new first elevation difference and the new second elevation difference is less than or equal to the first difference threshold.

[0062] If the difference between the first elevation difference and the second elevation difference is greater than the elevation difference threshold, it indicates that the elevation difference between the first elevation point and the second elevation point measured by the measuring device of the first target station is larger than the elevation difference between the first elevation point and the second elevation point measured by the measuring device of the second target station, indicating that the measurement error is large. In this case, the step of obtaining the first sight elevation difference between the first target station and the first elevation point and the second sight elevation difference between the first target station and the second elevation point by the measuring device set up at the first target station is re-entered to supplement the measurement of the elevation points that do not meet the requirements. Specifically, in this case, steps 203 to 206 are re-executed to obtain a new first elevation difference and a new second elevation difference until the new difference between the new first elevation difference and the new second elevation difference is less than or equal to the first difference threshold.

[0063] Sub-step 2064, obtaining a second elevation value of the second elevation point according to the first elevation value, the new first elevation difference and the new second elevation difference.

[0064] The new difference between the new first elevation difference and the new second elevation difference is less than or equal to the first difference threshold. In this case, the second elevation value of the second elevation point is obtained based on the first elevation value, the new first elevation difference and the new second elevation difference, and the second elevation value has high accuracy.

[0065] Step 206 includes the following sub-steps: Sub-step 2065, obtaining a third average value between the first elevation difference and the second elevation difference.

[0066] The third average value between the first elevation difference and the second elevation difference can accurately represent the elevation difference between the first elevation point and the second elevation point.

[0067] Sub-step 2066, summing the first elevation value and the third average value to obtain a second elevation value.

[0068] For example, the first elevation value of the first elevation point is , the first sight line elevation difference measured by the measuring equipment of the first target station is , the second sight elevation difference is ; The third sight line elevation difference measured by the measuring equipment at the second target station is , the fourth sight line elevation difference is ; Then the first elevation difference is: , the second elevation difference is .

[0069] Furthermore, the second elevation value of the second elevation point for:

[0070] In the actual measurement environment, if there is spherical aberration in the observation, when the viewing distance is basically equal, the influence of spherical aberration on the height difference measurement results in the two sight lines is also basically equal. Assume that the influence of spherical aberration on the height difference is , then considering the spherical aberration, the second elevation value of the second elevation point for:

[0071] It can be seen that, based on the method of step 201 to step 206, the second elevation value of the second elevation point is obtained, and the influence of spherical aberration on the elevation is eliminated in the process of calculating the second elevation value. In other words, based on the method of this embodiment, the second elevation value of the second elevation point can be made unaffected by the spherical aberration, thereby improving the accuracy of the second elevation value of the second elevation point.

[0072] In trigonometric height measurement, the difference in earth curvature can be corrected when calculating the height difference through the sight distance. When the distance between two points on the ground is less than 300 meters, these assumptions can be approximated, but when the distance between the two points exceeds 300 meters, the influence of the earth curvature on the height should be considered. Among them, the curvature correction is called spherical aberration correction, and its correction number is c. The earth curvature will affect the observation line of sight. In order to avoid the influence of the earth curvature difference on the second elevation value of the second elevation point, the sight distance between the first target station and the first elevation point, and the sight distance between the second target station and the second elevation point can be made less than 300 meters to avoid the influence of the earth curvature difference, thereby improving the accuracy of the second elevation value of the second elevation point.

[0073] In one embodiment, a first connecting line between a first target station and a first elevation point and a second connecting line between the first target station and a second elevation point are obtained; a correspondence between the incident direction of sunlight and different preset moments is obtained, and based on the correspondence, a target moment at which the angle between the incident direction of sunlight and the first connecting line and the second connecting line is closest to 90° is obtained, and a measuring device of the first target station and a measuring device of the second target station measure the elevation difference at the target moment.

[0074] The influence of atmospheric refraction difference is very complex, and it can be avoided or reduced by adjusting the observation direction. After experimental research, when the incident direction of light (such as sunlight) is perpendicular to the direction of the line connecting the two elevation points, the influence value on the elevation difference measurement of the two elevation points is basically equal, while when the light is parallel to the incident direction, the difference is large. Therefore, the target time point when the angle between the incident direction of sunlight and the first line and the second line is closest to 90° is obtained, and the measuring equipment of the first target station and the measuring equipment of the second target station measure the elevation difference at the target time point, which can minimize the influence of light on the elevation difference, so as to further improve the accuracy of obtaining the second elevation value of the second elevation point.

[0075] Step 207, obtaining a fifth line of sight elevation difference between the first target station and the third elevation point by means of a surveying device installed at the first target station, and obtaining a sixth line of sight elevation difference between the second target station and the third elevation point by means of a surveying device installed at the second target station.

[0076] The first target station and the second target station need to meet at least some of the following conditions: Condition 1: Among the first sight distance between the first target station and the first elevation point, the second sight distance between the first target station and the second elevation point, and the third sight distance between the first target station and the third elevation point, the sight distance difference between any two sight distances is less than or equal to a preset sight distance difference threshold.

[0077] Specifically, the difference in viewing distance between the first viewing distance and the second viewing distance is less than or equal to a preset viewing distance difference threshold; the difference in viewing distance between the first viewing distance and the third viewing distance is less than or equal to the preset viewing distance difference threshold; and the difference in viewing distance between the second viewing distance and the third viewing distance is also less than or equal to the preset viewing distance difference threshold.

[0078] Condition 2: Among the fourth sight distance between the second target station and the first elevation point, the fifth sight distance between the second target station and the second elevation point, and the sixth sight distance between the second target station and the third elevation point, the sight distance difference between any two sight distances is less than or equal to a preset sight distance difference threshold.

[0079] Specifically, the difference in viewing distance between the fourth viewing distance and the fifth viewing distance is less than or equal to the preset viewing distance difference threshold; the difference in viewing distance between the fourth viewing distance and the sixth viewing distance is less than or equal to the preset viewing distance difference threshold; the difference in viewing distance between the fifth viewing distance and the sixth viewing distance is less than or equal to the preset viewing distance difference threshold.

[0080] Condition three: the measuring equipment at the first target measuring station and the first elevation point, the second elevation point, and the third elevation point are all in sight.

[0081] Condition four: the measuring equipment at the second target measuring station and the first elevation point, the second elevation point, and the third elevation point are all in sight.

[0082] Based on the above measurement conditions, it can be ensured that the measuring equipment located at the first target measuring station and the measuring equipment located at the second target measuring station can successfully measure the elevation difference between the measured elevation point and the measured elevation point, and obtain the elevation value of the measured elevation point based on the elevation difference between the measured elevation point and the measured elevation point.

[0083] Further, if the first target station or the second target station does not satisfy the above conditions, the positions of the first target station and the second target station may be adjusted until the first target station and the second target station satisfy the above conditions.

[0084] Step 208, obtaining the third elevation difference between the first elevation point and the third elevation point based on the fifth sight line elevation difference and the first sight line elevation difference, and obtaining the fourth elevation difference between the first elevation point and the third elevation point based on the sixth sight line elevation difference and the third sight line elevation difference.

[0085] The fifth line of sight elevation difference is the line of sight elevation difference obtained by the measuring equipment of the first target measuring station. Therefore, the third elevation difference obtained according to the fifth line of sight elevation difference and the first line of sight elevation difference is the elevation difference between the third elevation point and the first elevation point obtained by the measuring equipment of the first target measuring station; the fifth line of sight elevation difference is the elevation difference obtained by the measuring equipment of the second target measuring station. Therefore, the fourth elevation difference obtained according to the sixth line of sight elevation difference and the third line of sight elevation difference is the elevation difference between the third elevation point and the first elevation point obtained by the measuring equipment of the second target measuring station.

[0086] Step 209, obtaining a third elevation value of a third elevation point according to the first elevation value, the third elevation difference and the fourth elevation difference.

[0087] The third elevation difference and the fourth elevation difference are elevation differences between the third elevation point and the first elevation point obtained by the measuring equipment of the first target measuring station and the measuring equipment of the second target measuring station, respectively.

[0088] According to the first elevation value and the elevation difference between the third elevation point and the first elevation point obtained by measuring equipment at two different target measuring stations, the third elevation value of the third elevation point can be accurately obtained.

[0089] Optionally, refer to Figure 4 , step 209 may include the following sub-steps: Sub-step A1, obtaining a fifth elevation difference between the fifth sight line elevation difference and the second sight line elevation difference, and a sixth elevation difference between the sixth elevation difference and the fourth elevation difference.

[0090] The fifth elevation difference between the fifth sight line elevation difference and the second sight line elevation difference is an elevation difference between the third elevation point and the second elevation point obtained by the measuring device of the first target measuring station.

[0091] The sixth elevation difference between the sixth elevation difference and the fourth elevation difference is an elevation difference between the third elevation point and the second elevation point obtained by the measuring device of the second target measuring station.

[0092] Sub-step A2, obtaining a third elevation value of a third elevation point according to the first elevation value, the first elevation difference, the second elevation difference, the third elevation difference, the fourth elevation difference, the fifth elevation difference and the sixth elevation difference.

[0093] For example, refer to Figure 5 , sub-step A2 may include the following sub-steps: Sub-step A21, obtaining a first average value between the third elevation difference and the fourth elevation difference.

[0094] Among them, the third elevation difference can represent the elevation difference between the third elevation point and the first elevation point obtained by the measuring equipment of the first target measuring station; the fourth elevation difference can represent the elevation difference between the third elevation point and the first elevation point obtained by the measuring equipment of the second target measuring station.

[0095] Then the first average value between the third elevation difference and the fourth elevation difference can accurately reflect the elevation difference between the third elevation point and the first elevation point obtained through the two target measuring stations.

[0096] Sub-step A22, summing the first elevation value and the first average value to obtain a first initial elevation value of the third elevation point.

[0097] For example, the first initial elevation value for:

[0098] in, is the first elevation value, and are respectively a fifth elevation difference of the third elevation point measured by the measuring device of the first target measuring station, and a first elevation difference of the first elevation point; and They are respectively the sixth elevation difference of the third elevation point measured by the measuring equipment of the second target measuring station, and the third elevation difference of the first elevation point.

[0099] Sub-step A23, obtaining a second average value between the fifth elevation difference and the sixth elevation difference, and a third average value between the first elevation difference and the second elevation difference.

[0100] The fifth elevation difference and the sixth elevation difference respectively represent the elevation differences between the third elevation point and the second elevation point measured by the measuring equipment of the first target station and the measuring equipment of the second target station. The second average value between the fifth elevation difference and the sixth elevation difference can accurately characterize the elevation difference between the third elevation point and the second elevation point obtained by the measuring equipment of the two target stations.

[0101] The first elevation difference and the second elevation difference respectively represent the elevation difference between the first elevation point and the second elevation point measured by the measuring equipment of the first target station and the measuring equipment of the second target station. The third average value between the first elevation difference and the second elevation difference can accurately characterize the elevation difference between the second elevation point and the first elevation point obtained by the measuring equipment of the two target stations.

[0102] Sub-step A24, summing the first elevation value, the second average value, and the third average value to obtain a second initial elevation value of the third elevation point.

[0103] The second elevation value of the second elevation point can be accurately obtained by summing the first elevation value and the second average value. The second elevation value of the second elevation point and the third average value are summed to obtain the second initial elevation value of the third elevation point.

[0104] The second initial elevation value of the third elevation point for:

[0105] Sub-step A25, obtaining a fourth average value of the first initial elevation value and the second initial elevation value, and determining the fourth average value as the third elevation value of the third elevation point.

[0106] The fourth average value of the first initial elevation value and the second initial elevation value is determined as the third elevation value of the third elevation point, which is to average the elevation values ​​of the third elevation point obtained by the two calculation methods, and determine the fourth average value obtained by averaging as the third elevation value of the third elevation point, thereby improving the accuracy of the third elevation value. for:

[0107] Sub-step A25 includes the following sub-steps: Sub-step A251, determining the difference between the first initial elevation value and the second initial elevation value as the line figure closure difference.

[0108] The line figure closure difference is used to reflect the error between the elevation values ​​of the third elevation point obtained through two different measurement routes.

[0109] Specifically, the first initial elevation value is the first elevation value of the first elevation point, and the elevation difference between the third elevation point and the first elevation point; the measurement route is the measurement route from the third elevation point to the first elevation point. The second initial elevation value is the first elevation value of the first elevation point, and the elevation difference between the second elevation point and the first elevation point, and the elevation difference between the third elevation point and the second elevation point; the measurement route is the measurement route from the first elevation point, the second elevation point to the third elevation point.

[0110] Therefore, based on the first initial elevation value and the second initial elevation value, the closing difference of the line figure is obtained, which can reflect the difference between the elevation values ​​of the two third elevation points obtained according to the closed line of the first elevation point, the second elevation point, the third elevation point, and the first elevation point.

[0111] Sub-step A252, if the line figure closure difference is less than or equal to the line figure closure difference threshold, obtain a fourth average value of the first initial elevation value and the second initial elevation value, and determine the fourth average value as the third elevation value of the third elevation point.

[0112] When the line graph closure difference is less than or equal to the line graph closure difference threshold, it means that the difference between the elevation values ​​of the third elevation point obtained through the two measurement lines is small, and the elevation value of the third elevation point obtained through the two measurement lines has high accuracy. Further, the first initial elevation value and the second initial elevation value are respectively obtained through the two lines, and the fourth average of the first initial elevation value and the second initial elevation value is determined as the third elevation value of the third elevation point, and the accuracy of the third elevation value is high.

[0113] Sub-step A253, if the line figure closure difference is greater than the line figure closure difference threshold, then re-enter the step of obtaining the fifth line of sight elevation difference between the first target station and the third elevation point by means of the measuring equipment set up at the first target station, and obtaining the sixth line of sight elevation difference between the second target station and the third elevation point by means of the measuring equipment set up at the second target station, so as to obtain a new first initial elevation value and a new second initial elevation value, and determine the difference between the new first initial elevation value and the new second initial elevation value as the new line figure closure difference, until the new line figure closure difference is less than or equal to the second preset threshold.

[0114] If the line graph closure difference is greater than the line graph closure difference threshold, it means that the difference between the elevation values ​​of the third elevation points obtained through the two measuring lines is large, indicating that the measurement results of these elevation points do not meet the requirements, and it is necessary to re-enter the steps of obtaining the fifth line of sight elevation difference between the first target measuring station and the third elevation point through the measuring equipment set up at the first target measuring station, and obtaining the sixth line of sight elevation difference between the second target measuring station and the third elevation point through the measuring equipment set up at the second target measuring station, so as to supplement the elevation points that do not meet the requirements, thereby improving the accuracy of the third elevation value of the third elevation point finally obtained.

[0115] Sub-step A254, obtaining a new fourth average value of the new first initial elevation value and the new second initial elevation value, and determining the new fourth average value as the third elevation value of the third elevation point.

[0116] For example, refer to Figure 3 , the first elevation group to be measured includes elevation points , and , the second elevation value to be measured includes the elevation point , and .

[0117] In the first group to be measured, the elevation points The first elevation point with known elevation value, elevation point and elevation points They are the second and third elevation points in the first group to be measured, and the target station and , respectively for the first target station and the second target station of the first group to be measured. According to the method of the above embodiment, the elevation points can be obtained respectively The second elevation value and elevation point The third elevation value.

[0118] In the second group to be measured, the elevation points , elevation point and elevation points They are the first, second and third elevation points in the second group to be measured, and the target station and , respectively for the first target station and the second target station of the second group to be measured. The elevation value of is known, the elevation point The elevation value of is the first elevation value of the first elevation point in the second group to be measured. According to the method of the above embodiment, the elevation point with unknown elevation value can be obtained. The third elevation value.

[0119] In the case of including elevation points , and When the group to be measured is measuring, the elevation point , and They are the first, second and third elevation points of the group to be measured respectively; target station and , respectively for the first target measuring station and the second target measuring station of the group to be measured.

[0120] When using precise trigonometric height measurement methods to perform high-precision, high-grade (for example, second-class and above) height measurements, it is necessary to perform precise inspections on the instruments and tools used. After passing the inspections, elevation values ​​can be measured based on the instruments and tools to ensure the accuracy of the measurement results.

[0121] For example, when measuring elevation values ​​based on the precise trigonometric height measurement method of this embodiment, the observation rounds are greater than or equal to two measurement rounds to ensure the accuracy of the measurement results.

[0122] Compared with the traditional trigonometric height measurement method, the precision electronic trigonometric height measurement method of this embodiment has more single-station observation directions, more stable graphic structure, and more redundant observation conditions. After long-term practice verification, for second-class precision height measurement, two rounds of measurement can meet the measurement accuracy requirements. That is, the method of this embodiment has the characteristics of simple measurement steps and high measurement efficiency on the basis of ensuring the accuracy of the measured height value.

[0123] The precise trigonometric height measurement method provided in the embodiment of the present application is described in detail below through specific embodiments in conjunction with the accompanying drawings.

[0124] In one embodiment, referring to Figure 3 There are multiple elevation points, including , to ,in, is a known elevation point, and its elevation is . Figure 6 is a flow chart of the steps of a precise trigonometric height measurement method provided in an embodiment of the present application, such as Figure 6 As shown, the method may include: Step S1, set up the instrument The location of the measuring station, observing the elevation point with basically equal sight distance , and , respectively Station location to elevation point , and elevation difference.

[0125] Among them, in this step The measuring station is equivalent to the first target measuring station in the above embodiment, and the elevation point , and , which are respectively equivalent to the first elevation point, the second elevation point and the third elevation point in the above-mentioned embodiment. The instrument in this step is the measuring device in the above-mentioned embodiment.

[0126] Specifically, The station observed the elevation point , and The sight height differences are , and .

[0127] Step S2: Install the instrument at a distance How many meters away is the station? Station, continue to observe the height point , and , respectively Station location to elevation point , and elevation difference.

[0128] Specifically, The station observed the elevation point , and The sight height differences are , and .

[0129] Further, referring to the method of step S1 and step S2, observations are sequentially performed on other measuring stations with substantially equal sight distances.

[0130] For example, through Measuring station, observing elevation points , and and through Measuring station, observing elevation points , and elevation difference.

[0131] For example, moving the instrument to Measuring station, observing elevation points with basically equal sight distance , and , observation Station to elevation point , and The sight elevation differences are , and .

[0132] Move the instrument to a distance Standing a few meters away Station, continue to observe the height point , and , observation Station to elevation point , and The sight elevation differences are , and .

[0133] Step S3, according to the elevation point The first elevation value of the Y11 station, the elevation difference from the Y11 station to the elevation points B1, B2, and B3, and the elevation difference from the Y12 station to the elevation points B1, B2, and B3 are used to obtain the elevation values ​​of the elevation points B2 and B3.

[0134] according to , , , , 、h 12 3. Calculate the elevation of elevation point B2 and the elevation of elevation point B3.

[0135] Among them, the second elevation value of the second elevation point for: ; The first initial elevation value of the third elevation point for:

[0136] The second initial elevation value of the third elevation point for:

[0137] The third elevation value of the third elevation point for:

[0138] The difference between the two sight elevations does not match the value The elevation difference mismatch value is equivalent to the fifth difference between the first elevation difference and the second elevation difference in the aforementioned embodiment.

[0139] Line pattern closure error .

[0140] Further, the elevation values ​​of other elevation points are calculated by analogy. Specifically, for other elevation points, after obtaining the elevation differences measured by different target measuring stations with reference to step S1 and step S2, the elevation value of the elevation point is obtained with reference to the method of step S3.

[0141] The method of this embodiment is a new type of trigonometric height measurement technology method developed on the basis of the traditional trigonometric height measurement technology method. It is an update and iteration of the traditional trigonometric height measurement technology, and is a result of quality upgrade and innovative development. The method has high measurement efficiency and high measurement accuracy. Furthermore, the method of this embodiment has the characteristics of high operating efficiency and high precision in measuring elevation differences, that is, compared with the trigonometric height measurement and geometric leveling measurement methods in the related art, this embodiment has a greater operating efficiency advantage. In addition, this embodiment measures the elevation value of an elevation point with unknown elevation through the measuring equipment of two target measuring stations, which can avoid the problem in the related art that the elevation point with known elevation and the elevation point with unknown elevation cannot be seen through, resulting in the inability to obtain the elevation value of the elevation point with unknown elevation.

[0142] refer to Figure 7 , which shows a precision trigonometric height measurement device provided by an embodiment of the present application, the device 30 includes: a first acquisition module 301, used to obtain a first sight elevation difference between the first target station and the first elevation point, and a second sight elevation difference between the first target station and the second elevation point by means of a measurement device set up at the first target station; the first elevation point has a first elevation value; a second acquisition module 302, used to obtain a third sight elevation difference between the second target station and the first elevation point, and a fourth sight elevation difference between the second target station and the second elevation point by means of a measurement device set up at the second target station; a third acquisition module 303, used to obtain a first elevation difference between the second elevation point and the first elevation point according to the second sight elevation difference and the first sight elevation difference, and to obtain a second elevation difference between the second elevation point and the first elevation point according to the fourth sight elevation difference and the third sight elevation difference; a fourth acquisition module 304, used to obtain a second elevation value of the second elevation point according to the first elevation value, the first elevation difference, and the second elevation difference.

[0143] Optionally, the device 30 also includes: a sixth acquisition module, used to acquire the fifth line of sight elevation difference between the first target station and the third elevation point by means of a measuring device set up at the first target station, and to acquire the sixth line of sight elevation difference between the second target station and the third elevation point by means of a measuring device set up at the second target station; a seventh acquisition module, used to acquire the third elevation difference between the first elevation point and the third elevation point based on the fifth line of sight elevation difference and the first line of sight elevation difference, and to acquire the fourth elevation difference between the first elevation point and the third elevation point based on the sixth line of sight elevation difference and the third line of sight elevation difference; an eighth acquisition module, used to obtain the third elevation value of the third elevation point based on the first elevation value, the third elevation difference and the fourth elevation difference.

[0144] Optionally, the device 30 also includes: a grouping module, used to determine multiple elevation points to be measured, and divide the multiple elevation points to be measured into multiple groups to be measured; a first determination module, used to determine the elevation points to be measured in the group to be measured as the first elevation point, the second elevation point, and the third elevation point, respectively, for each group to be measured.

[0145] Optionally, in two adjacent groups to be measured, some of the elevation points to be measured in the former group to be measured are the same as some of the elevation points to be measured in the latter group to be measured.

[0146] Optionally, among the first sight distance between the first target station and the first elevation point, the second sight distance between the first target station and the second elevation point, and the third sight distance between the first target station and the third elevation point, the first sight distance difference between any two sight distances is less than or equal to a preset sight distance difference threshold; among the fourth sight distance between the second target station and the first elevation point, the fifth sight distance between the second target station and the second elevation point, and the sixth sight distance between the second target station and the third elevation point, the second sight distance difference between any two sight distances is less than or equal to the preset sight distance difference threshold.

[0147] Optionally, the surveying equipment located at the first target survey station and the first elevation point, the second elevation point, and the third elevation point are all in a line-of-sight state; the surveying equipment located at the second target survey station and the first elevation point, the second elevation point, and the third elevation point are all in a line-of-sight state.

[0148] Optionally, the fourth acquisition module 304 includes: The first acquisition submodule is used to acquire the fifth elevation difference between the fifth line of sight elevation difference and the second line of sight elevation difference, and the sixth elevation difference between the sixth line of sight elevation difference and the fourth line of sight elevation difference; the second acquisition submodule is used to obtain the third elevation value of the third elevation point according to the first elevation value, the first elevation difference, the second elevation difference, the third elevation difference, the fourth elevation difference, the fifth elevation difference and the sixth elevation difference.

[0149] Optionally, the second acquisition submodule includes: a first acquisition unit, used to acquire a first average value between the third elevation difference and the fourth elevation difference; a second acquisition unit, used to sum the first elevation value and the first average value to obtain a first initial elevation value of the third elevation point; a third acquisition unit, used to acquire a second average value between the fifth elevation difference and the sixth elevation difference, and a third average value of the first elevation difference and the second elevation difference; a fourth acquisition unit, used to sum the first elevation value, the second average value and the third average value to obtain a second initial elevation value of the third elevation point; and a fifth acquisition unit, used to acquire a fourth average value of the first initial elevation value and the second initial elevation value, and determine the fourth average value as the third elevation value of the third elevation point.

[0150] Optionally, the fifth acquisition unit includes: a first determination subunit, used to determine the difference between the first initial elevation value and the second initial elevation value as the line graphic closure difference; a first acquisition subunit, used to obtain a fourth average value of the first initial elevation value and the second initial elevation value if the line graphic closure difference is less than or equal to the line graphic closure difference threshold, and determine the fourth average value as the third elevation value of the third elevation point.

[0151] Optionally, the fifth acquisition unit includes: a second acquisition subunit, which is used to, after obtaining the line figure closure difference according to the first initial elevation value and the second initial elevation value, if the line figure closure difference is greater than the line figure closure difference threshold, re-enter the step of obtaining the fifth line of sight elevation difference between the first target measuring station and the third elevation point through the measuring equipment set up at the first target measuring station, and obtaining the sixth line of sight elevation difference between the second target measuring station and the third elevation point through the measuring equipment set up at the second target measuring station, so as to obtain a new first initial elevation value and a new second initial elevation value, and determine the difference between the new first initial elevation value and the new second initial elevation value as the new line figure closure difference, until the new line figure closure difference is less than or equal to the line figure closure difference threshold; a third acquisition subunit, which is used to obtain a new fourth average value of the new first initial elevation value and the new second initial elevation value, and determine the new fourth average value as the third elevation value of the third elevation point.

[0152] Optionally, the fourth acquisition module 304 includes: a third acquisition submodule, used to obtain a fifth difference between the first elevation difference and the second elevation difference; and a fourth acquisition submodule, used to obtain a second elevation value of the second elevation point based on the first elevation value, the first elevation difference, and the second elevation difference if the difference between the first elevation difference and the second elevation difference is less than or equal to an elevation difference threshold.

[0153] Optionally, the fourth acquisition module 304 includes: a fifth acquisition submodule, which is used to re-enter the step of acquiring the first line of sight elevation difference between the first target station and the first elevation point, and the second line of sight elevation difference between the first target station and the second elevation point through the measuring equipment set up at the first target station if the difference between the first elevation difference and the second elevation difference is greater than the elevation difference threshold, so as to acquire a new first elevation difference and a new second elevation difference, until the new difference between the new first elevation difference and the new second elevation difference is less than or equal to the elevation difference threshold; a sixth acquisition submodule, which is used to obtain the second elevation value of the second elevation point according to the first elevation value, the new first elevation difference and the new second elevation difference.

[0154] Optionally, the fourth acquisition module 304 includes: a seventh acquisition submodule, used to acquire a third average value between the first elevation difference and the second elevation difference; and an eighth acquisition submodule, used to sum the first elevation value and the third average value to obtain the second elevation value.

[0155] The method of this embodiment has the characteristics of high operating efficiency and high precision in measuring elevation differences. Compared with the trigonometric height measurement and geometric leveling methods in the related art, this embodiment has a greater operating efficiency advantage. The measuring equipment of the first target measuring station and the second target measuring station in this embodiment measures the elevation value of the second elevation point with unknown elevation. Based on the method of this embodiment, the problem that the elevation point with known elevation and the elevation point with unknown elevation cannot be obtained due to the lack of line of sight between the elevation point with known elevation and the elevation point with unknown elevation in the related art can be avoided.

[0156] In one embodiment, referring to Figure 8 A precision trigonometric height measurement system, the system 40 includes a measuring device 401 and a data processing module 402; the measuring device 401 is used to obtain a first sight elevation difference between a first target station and a first elevation point, and a second sight elevation difference between the first target station and a second elevation point; the first elevation point has a first elevation value; the measuring device 401 is also used to obtain a third sight elevation difference between a second target station and the first elevation point, and a fourth sight elevation difference between the second target station and the second elevation point; the data processing module 402 is used to obtain a first elevation difference between the second elevation point and the first elevation point according to the second sight elevation difference and the first sight elevation difference, and to obtain a second elevation difference between the second elevation point and the first elevation point according to the fourth sight elevation difference and the third sight elevation difference; the data processing module 402 is also used to obtain a second elevation value of the second elevation point according to the first elevation value, the first elevation difference and the second elevation difference.

[0157] The method of this embodiment has the characteristics of high operating efficiency and high precision in measuring elevation differences. Compared with the trigonometric height measurement and geometric leveling methods in the related art, this embodiment has a greater operating efficiency advantage. The measuring equipment of the first target measuring station and the second target measuring station in this embodiment measures the elevation value of the second elevation point with unknown elevation. Based on the method of this embodiment, the problem that the elevation point with known elevation and the elevation point with unknown elevation cannot be obtained due to the lack of line of sight between the elevation point with known elevation and the elevation point with unknown elevation in the related art can be avoided.

[0158] Fig. 9 1 is a block diagram of an electronic device 500 according to an exemplary embodiment. For example, the electronic device 500 may be a mobile phone, a computer, a digital broadcast terminal, a messaging device, a game console, a tablet device, a medical device, a fitness device, a personal digital assistant, etc.

[0159] Reference Fig. 9 , the electronic device 500 may include one or more of the following components: a processing component 502 , a memory 504 , a power component 506 , a multimedia component 508 , an audio component 510 , an input / output (I / O) interface 512 , a sensor component 514 , and a communication component 516 .

[0160] The processing component 502 generally controls the overall operation of the electronic device 500, such as operations associated with display, phone calls, data communications, camera operations, and recording operations. The processing component 502 may include one or more processors 520 to execute instructions to complete all or part of the steps of the above-mentioned method. In addition, the processing component 502 may include one or more modules to facilitate the interaction between the processing component 502 and other components. For example, the processing component 502 may include a multimedia module to facilitate the interaction between the multimedia component 508 and the processing component 502.

[0161] The memory 504 is used to store various types of data to support the operation of the electronic device 500. Examples of such data include instructions for any application or method operating on the electronic device 500, contact data, phone book data, messages, pictures, multimedia, etc. The memory 504 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic disk or optical disk.

[0162] The power supply component 506 provides power to the various components of the electronic device 500. The power supply component 506 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power to the electronic device 500.

[0163] The multimedia component 508 includes a screen that provides an output interface between the electronic device 500 and the user. In some embodiments, the screen may include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive input signals from the user. The touch panel includes one or more touch sensors to sense touch, slide, and gestures on the touch panel. The touch sensor may not only sense the demarcation of the touch or slide action, but also detect the duration and pressure associated with the touch or slide operation. In some embodiments, the multimedia component 508 includes a front camera and / or a rear camera. When the electronic device 500 is in an operating mode, such as a shooting mode or a multimedia mode, the front camera and / or the rear camera may receive external multimedia data. Each front camera and rear camera may be a fixed optical lens system or have a focal length and optical zoom capability. The audio component 510 is used to output and / or input audio signals. For example, the audio component 510 includes a microphone (MIC), and when the electronic device 500 is in an operating mode, such as a call mode, a recording mode, and a voice recognition mode, the microphone is used to receive external audio signals. The received audio signal may be further stored in the memory 504 or transmitted via the communication component 516. In some embodiments, the audio component 510 further includes a speaker for outputting audio signals.

[0164] The I / O interface 512 provides an interface between the processing component 502 and the peripheral interface module, which may be a keyboard, a click wheel, a button, etc. These buttons may include, but are not limited to, a home button, a volume button, a start button, and a lock button. The sensor component 514 includes one or more sensors for providing various aspects of status evaluation for the electronic device 500. For example, the sensor component 514 can detect the open / closed state of the electronic device 500, the relative positioning of components, such as the display and the keypad of the electronic device 500, and the sensor component 514 can also detect the position change of the electronic device 500 or a component of the electronic device 500, the presence or absence of contact between the user and the electronic device 500, the orientation or acceleration / deceleration of the electronic device 500, and the temperature change of the electronic device 500. The sensor component 514 may include a proximity sensor configured to detect the presence of a nearby object without any physical contact. The sensor component 514 may also include an optical sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor component 514 may also include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

[0165] The communication component 516 is used to facilitate wired or wireless communication between the electronic device 500 and other devices. The electronic device 500 can access a wireless network based on a communication standard, such as WiFi, a carrier network (such as 2G, 3G, 4G or 5G), or a combination thereof. In an exemplary embodiment, the communication component 516 receives a broadcast signal or broadcast-related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 516 also includes a near field communication (NFC) module to facilitate short-range communication. For example, the NFC module can be implemented based on radio frequency identification (RFID) technology, infrared data association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology and other technologies.

[0166] In an exemplary embodiment, the electronic device 500 can be implemented by one or more application-specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable gate arrays (FPGAs), controllers, microcontrollers, microprocessors or other electronic components to implement a precise trigonometric height measurement method provided in an embodiment of the present application.

[0167] In an exemplary embodiment, a non-transitory computer-readable storage medium including instructions is also provided, such as a memory 504 including instructions, and the instructions can be executed by a processor 520 of an electronic device 500 to perform the above method. For example, the non-transitory storage medium can be a ROM, a random access memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, etc.

[0168] Fig.10 6 is a block diagram of an electronic device 600 according to an exemplary embodiment. For example, the electronic device 600 may be provided as a server. Fig.10 The electronic device 600 includes a processing component 622, which further includes one or more processors, and a memory resource represented by a memory 632 for storing instructions executable by the processing component 622, such as an application. The application stored in the memory 632 may include one or more modules, each corresponding to a set of instructions. In addition, the processing component 622 is configured to execute instructions to perform a precise trigonometric height measurement method provided in an embodiment of the present application.

[0169] The electronic device 600 may also include a power supply component 626 configured to perform power management of the electronic device 600, a wired or wireless network interface 650 configured to connect the electronic device 600 to a network, and an input / output (I / O) interface 658. The electronic device 600 may operate based on an operating system stored in the memory 632, such as Windows Server™, Mac OS X™, Unix™, Linux™, FreeBSD™ or the like.

[0170] An embodiment of the present application also provides a computer program product, including a computer program, and a precise trigonometric height measurement method is implemented when the computer program is executed by a processor.

[0171] Those skilled in the art will readily appreciate other embodiments of the present application after considering the specification and practicing the application disclosed herein. The present application is intended to cover any variations, uses or adaptations of the present application, which follow the general principles of the present application and include common knowledge or customary techniques in the art that are not disclosed in the present application. The specification and examples are intended to be exemplary only, and the true scope and spirit of the present application are indicated by the following claims.

[0172] It should be understood that the present application is not limited to the precise structures that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present application is limited only by the appended claims.

[0173] The above are only preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.

[0174] The above is a detailed introduction to a precise trigonometric height measurement method, device, electronic device and computer-readable storage medium provided by the present application. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method of the present application and its core idea; at the same time, for general technical personnel in this field, according to the idea of ​​the present application, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A precision trigonometric height measurement method, characterized in that: include: By means of a measuring device set up at a first target station, a first sight elevation difference between the first target station and a first elevation point and a second sight elevation difference between the first target station and a second elevation point are obtained; The first elevation point has a first elevation value; By means of a measuring device installed at a second target station, a third sight line elevation difference between the second target station and the first elevation point and a fourth sight line elevation difference between the second target station and the second elevation point are obtained; According to the second sight line elevation difference and the first sight line elevation difference, a first elevation difference between the second elevation point and the first elevation point is obtained, and according to the fourth sight line elevation difference and the third sight line elevation difference, a second elevation difference between the second elevation point and the first elevation point is obtained; A second elevation value of the second elevation point is obtained according to the first elevation value, the first elevation difference and the second elevation difference.

2. The method according to claim 1, characterized in that The method further comprises: Obtaining a fifth sight line elevation difference between the first target station and a third elevation point by using a measuring device installed at the first target station, and obtaining a sixth sight line elevation difference between the second target station and the third elevation point by using a measuring device installed at the second target station; According to the fifth sight line elevation difference and the first sight line elevation difference, a third elevation difference between the first elevation point and the third elevation point is obtained, and according to the sixth sight line elevation difference and the third sight line elevation difference, a fourth elevation difference between the first elevation point and the third elevation point is obtained; A third elevation value of the third elevation point is obtained according to the first elevation value, the third elevation difference and the fourth elevation difference.

3. The method according to claim 2, characterized in that The method further comprises: Determine a plurality of elevation points to be measured, and divide the plurality of elevation points to be measured into a plurality of groups to be measured; For each group to be measured, the elevation points to be measured in the group to be measured are respectively determined as a first elevation point, a second elevation point, and a third elevation point.

4. The method according to claim 3, characterized in that In two adjacent groups to be measured, some of the elevation points to be measured in the former group to be measured are the same as some of the elevation points to be measured in the latter group to be measured.

5. The method according to claim 2, characterized in that: Among a first sight distance between the first target station and a first elevation point, a second sight distance between the first target station and the second elevation point, and a third sight distance between the first target station and a third elevation point, a first sight distance difference between any two sight distances is less than or equal to a preset sight distance difference threshold; Among the fourth sight distance between the second target station and the first elevation point, the fifth sight distance between the second target station and the second elevation point, and the sixth sight distance between the second target station and the third elevation point, a second sight distance difference between any two sight distances is less than or equal to a preset sight distance difference threshold.

6. The method according to claim 2, characterized in that The measuring equipment located at the first target survey station and the first elevation point, the second elevation point, and the third elevation point are all in a line of sight state; The surveying equipment located at the second target survey station and the first elevation point, the second elevation point, and the third elevation point are all in a line-of-sight state.

7. The method according to claim 2, characterized in that: The step of obtaining a third elevation value of the third elevation point according to the first elevation value, the third elevation difference and the fourth elevation difference comprises: Acquire a fifth elevation difference between the fifth sight line elevation difference and the second sight line elevation difference, and a sixth elevation difference between the sixth sight line elevation difference and the fourth sight line elevation difference; The third elevation value of the third elevation point is obtained according to the first elevation value, the first elevation difference, the second elevation difference, the third elevation difference, the fourth elevation difference, the fifth elevation difference and the sixth elevation difference.

8. The method according to claim 7, characterized in that The step of obtaining a third elevation value of the third elevation point according to the first elevation value, the first elevation difference, the second elevation difference, the third elevation difference, the fourth elevation difference, the fifth elevation difference and the sixth elevation difference comprises: Obtaining a first average value between the third elevation difference and the fourth elevation difference; The first elevation value and the first average value are summed to obtain a first initial elevation value of a third elevation point; Obtaining a second average value between the fifth elevation difference and the sixth elevation difference, and a third average value between the first elevation difference and the second elevation difference; The first elevation value, the second average value, and the third average value are summed to obtain a second initial elevation value of a third elevation point; A fourth average value of the first initial elevation value and the second initial elevation value is obtained, and the fourth average value is determined as a third elevation value of the third elevation point.

9. The method according to claim 8, characterized in that The step of obtaining a fourth average value of the first initial elevation value and the second initial elevation value, and determining the fourth average value as the third elevation value of the third elevation point, comprises: Determine the difference between the first initial elevation value and the second initial elevation value as the line figure closure difference; If the line graph closure difference is less than or equal to the line graph closure difference threshold, a fourth average value of the first initial elevation value and the second initial elevation value is obtained, and the fourth average value is determined as the third elevation value of the third elevation point.

10. The method according to claim 9, characterized in that After determining the difference between the first initial elevation value and the second initial elevation value as the line figure closure difference, the method further includes: If the line graph closure difference is greater than the line graph closure difference threshold, then re-enter the step of obtaining the fifth sight line elevation difference between the first target station and the third elevation point by using the measuring equipment set up at the first target station, and obtaining the sixth sight line elevation difference between the second target station and the third elevation point by using the measuring equipment set up at the second target station, so as to obtain a new first initial elevation value and a new second initial elevation value, and determine the difference between the new first initial elevation value and the new second initial elevation value as a new line graph closure difference, until the new line graph closure difference is less than or equal to the line graph closure difference threshold; A new fourth average value of the first initial elevation value and the second initial elevation value is obtained, and the new fourth average value is determined as the third elevation value of the third elevation point.

11. The method according to claim 1, characterized in that: The obtaining, according to the first elevation value, the first elevation difference and the second elevation difference, the second elevation value of the second elevation point comprises: Obtaining a difference between the first elevation difference and the second elevation difference; If the difference between the first elevation difference and the second elevation difference is less than or equal to an elevation difference threshold, the second elevation value of the second elevation point is obtained according to the first elevation value, the first elevation difference and the second elevation difference.

12. The method according to claim 11, characterized in that After obtaining the difference between the first elevation difference and the second elevation difference, the method further includes: If the difference between the first elevation difference and the second elevation difference is greater than the elevation difference threshold, re-entering the step of obtaining the first sight elevation difference between the first target station and the first elevation point, and the second sight elevation difference between the first target station and the second elevation point by means of the measuring device set up at the first target station, so as to obtain a new first elevation difference and a new second elevation difference, until the new difference between the new first elevation difference and the new second elevation difference is less than or equal to the elevation difference threshold; The second elevation value of the second elevation point is obtained according to the first elevation value, the new first elevation difference and the new second elevation difference.

13. The method according to claim 1, characterized in that Obtaining a second elevation value of the second elevation point according to the first elevation value, the first elevation difference, and the second elevation difference includes: Obtaining a third average value between the first elevation difference and the second elevation difference; The first elevation value and the third average value are summed to obtain the second elevation value.

14. A precision trigonometric height measuring device, characterized in that: include: A first acquisition module is used to acquire a first sight elevation difference between the first target station and a first elevation point, and a second sight elevation difference between the first target station and a second elevation point by using a measurement device set up at the first target station; The first elevation point has a first elevation value; A second acquisition module is used to acquire a third sight line elevation difference between the second target station and the first elevation point, and a fourth sight line elevation difference between the second target station and the second elevation point by using a measurement device set up at the second target station; a third acquisition module, configured to acquire a first elevation difference between the second elevation point and the first elevation point according to the second sight line elevation difference and the first sight line elevation difference, and to acquire a second elevation difference between the second elevation point and the first elevation point according to the fourth sight line elevation difference and the third sight line elevation difference; The fourth acquisition module is used to obtain the second elevation value of the second elevation point according to the first elevation value, the first elevation difference and the second elevation difference.

15. A precision trigonometric height measurement system, characterized in that: The system includes a measuring device and a data processing module; The measuring device is used to obtain a first sight elevation difference between a first target measuring station and a first elevation point, and a second sight elevation difference between the first target measuring station and a second elevation point; the first elevation point has a first elevation value; The surveying device is further used to obtain a third sight line elevation difference between the second target survey station and the first elevation point, and a fourth sight line elevation difference between the second target survey station and the second elevation point; The data processing module is used to obtain a first elevation difference between the second elevation point and the first elevation point according to the second sight line elevation difference and the first sight line elevation difference, and to obtain a second elevation difference between the second elevation point and the first elevation point according to the fourth sight line elevation difference and the third sight line elevation difference; The data processing module is further used to obtain the second elevation value of the second elevation point according to the first elevation value, the first elevation difference and the second elevation difference.

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