Methods, apparatus, electronic devices and storage media for determining the reachability of communication

Abstract

This invention provides a method, apparatus, electronic device, and storage medium for determining communication reachability. Within a preset range centered on the coordinates of a ground station, multiple geographic coordinate points are generated based on preset distance and angle steps. Geometric visibility analysis is performed on each geographic coordinate point to determine the geometric visibility analysis result. Simultaneously, signal quality visibility analysis is performed on each geographic coordinate point to determine the signal quality visibility analysis result. Based on the geometric visibility analysis results and the signal quality visibility analysis results, the communication reachability range of the aircraft communicating with the ground station is determined. By combining the geometric and signal quality visibility analysis results to comprehensively determine the communication reachability range, multiple influencing factors in the signal propagation path are considered, which not only improves the accuracy of the communication reachability range analysis between the aircraft and the ground station but also ensures the reliability of communication between the ground station and the aircraft.

Description

Technical Field

[0001] This invention relates to the field of wireless communication technology, and in particular to a method, apparatus, electronic device, and storage medium for determining the reachability of communication. Background Technology

[0002] Line-of-sight analysis (LOS) is a method used to determine whether there are obstructions between two points. However, in the field of rocket and missile launches, the purpose of LOS is also to determine whether communication is possible between the ground station and the aircraft. It requires considering not only whether the line between the two points is obstructed, but also the quality of communication between them.

[0003] During flight, aircraft need to communicate with ground stations, especially mobile launch vehicles which require prior terrain surveys to ensure communication quality. Therefore, line-of-sight analysis is necessary to identify communication blind spots. Accurately determining the reachability of aircraft communication to improve the reliability of communication between the aircraft and ground stations is a crucial issue that the industry urgently needs to address. Summary of the Invention

[0004] This invention provides a method, apparatus, electronic device, and storage medium for determining the communication reachability of an aircraft, thereby improving the communication reliability between the aircraft and the ground station.

[0005] This invention provides a method for determining communication reachability, comprising the following steps: Within a preset range centered on the ground station coordinates, multiple geographic coordinate points are generated based on preset distance step size and preset angle step size; Perform geometric visibility analysis on each of the geographic coordinate points to determine the geometric visibility analysis results for each geographic coordinate point, and perform signal quality visibility analysis on each of the geographic coordinate points to determine the signal quality visibility analysis results for each geographic coordinate point. Based on the geometric line-of-sight analysis results and the signal quality line-of-sight analysis results, the communication reachability range of the aircraft communicating with the ground station is determined.

[0006] According to a method for determining communication reachability provided by the present invention, the signal quality line-of-sight analysis includes Fresnel zone obstruction analysis and rainfall signal attenuation analysis.

[0007] According to a method for determining communication reachability provided by the present invention, the step of determining the communication reachability of an aircraft communicating with the ground station based on the geometric line-of-sight analysis results and the signal quality line-of-sight analysis results includes: Based on the geometric line-of-sight analysis results, if the geometric line-of-sight between the aircraft and the ground station is determined, then based on the analysis results of the rainfall signal attenuation analysis, the communication reachability range of the aircraft is determined. If, based on the geometric line-of-sight analysis results, it is determined that the aircraft and the ground station are geometrically out of sight, the communication reachability range of the aircraft is determined based on the Fresnel zone obstruction analysis results and the rainfall signal attenuation analysis results.

[0008] According to a method for determining communication reachability provided by the present invention, geometric visibility analysis is performed on the geographic coordinate points, including: Determine multiple intermediate geographic coordinate points between the ground station and the ground projection point of the aircraft, and obtain the terrain elevation data of each intermediate geographic coordinate point; Determine the line-of-sight height of the line-of-sight path between the ground station and the aircraft at each of the intermediate geographic coordinate points; The line-of-sight height is compared with the terrain elevation data of each intermediate geographic coordinate point to determine whether there is terrain obstruction.

[0009] According to a method for determining communication reachability provided by the present invention, rainfall signal attenuation analysis is performed on the geographic coordinate points, including: The signal power at the receiver is determined based on the transmitter's transmit power, transmitter's antenna gain, receiver's antenna gain, and signal attenuation; the signal attenuation includes distance signal attenuation and rainfall signal attenuation. Based on the signal power and sensitivity of the receiving end, it is determined whether the receiving end and the transmitting end have successfully communicated.

[0010] According to a method for determining communication reachability provided by the present invention, Fresnel zone occlusion analysis is performed on the geographic coordinate points, including: The Fresnel zone radius of the geographic coordinate point is calculated based on the communication frequency between the aircraft and the ground station, the distance between the aircraft and the ground station, the distance between the geographic coordinate point and the ground station, and the distance between the geographic coordinate point and the aircraft. Based on the Fresnel zone radius, the Fresnel zone occlusion range of the geographic coordinate point is determined.

[0011] The present invention also provides a device for determining the reachability of communication, comprising the following modules: The geographic coordinate point generation module is used to generate multiple geographic coordinate points within a preset range centered on the ground station coordinates, based on preset distance steps and preset angle steps. The visibility analysis module is used to perform geometric visibility analysis on each of the geographic coordinate points, determine the geometric visibility analysis results of each geographic coordinate point, and perform signal quality visibility analysis on each of the geographic coordinate points, determine the signal quality visibility analysis results of each geographic coordinate point. The reachability determination module is used to determine the communication reachability of the aircraft communicating with the ground station based on the geometric line-of-sight analysis results and the signal quality line-of-sight analysis results.

[0012] The present invention also provides an electronic device, including a memory, a processor, and a computer program stored in the memory and running on the processor, wherein the processor, when executing the program, implements the method for determining the communication reachability as described above.

[0013] The present invention also provides a non-transitory computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the method for determining the reachability of communication as described above.

[0014] The present invention also provides a computer program product, including a computer program that, when executed by a processor, implements the method for determining the communication reachability as described above.

[0015] The method, apparatus, electronic device, and storage medium for determining communication reachability provided by this invention can accurately determine whether there are unobstructed propagation paths between a ground station and various geographic coordinate points through geometric line-of-sight analysis, effectively determining the impact of terrain obstacles on communication. Through signal quality line-of-sight analysis, the impact of signal transmission quality on communication signals between geographic coordinate points and the ground station is determined. By combining the results of geometric and signal quality line-of-sight analyses to comprehensively determine the communication reachability, considering multiple influencing factors in the signal propagation path, this not only improves the accuracy of communication reachability analysis between the aircraft and the ground station but also ensures the reliability of communication between the ground station and the aircraft. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 This is a flowchart illustrating the method for determining the reachability of communication provided by the present invention.

[0018] Figure 2 This is a schematic diagram illustrating the generation of multiple geographic coordinate points provided by the present invention.

[0019] Figure 3 This is a schematic diagram of geometrical vision analysis provided by the present invention.

[0020] Figure 4 This is a schematic diagram of elevation data provided by the present invention.

[0021] Figure 5 This is a schematic diagram of Fresnel zone occlusion analysis provided by the present invention.

[0022] Figure 6 This is a schematic diagram of the structure of the communication reachability determination device provided by the present invention.

[0023] Figure 7 This is a schematic diagram of the structure of the electronic device provided by the present invention. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0025] Figure 1 This is a flowchart illustrating the method for determining the communication reachability range provided by the present invention, as shown below. Figure 1 As shown, the method includes the following: Step 110: Within a preset range centered on the ground station coordinates, generate multiple geographic coordinate points based on a preset distance step size and a preset angle step size; Step 120: Perform geometric visibility analysis on each of the geographic coordinate points to determine the geometric visibility analysis results for each geographic coordinate point, and perform signal quality visibility analysis on each of the geographic coordinate points to determine the signal quality visibility analysis results for each geographic coordinate point. Step 130: Based on the geometric line-of-sight analysis results and the signal quality line-of-sight analysis results, determine the communication reachability range of the aircraft communicating with the ground station.

[0026] The execution subject of the communication reachability determination method provided by this invention can be an electronic device, a component in an electronic device, an integrated circuit, or a chip. The electronic device can be a mobile electronic device or a non-mobile electronic device. For example, a mobile electronic device can be a mobile phone, tablet computer, laptop computer, PDA, ultra-mobile personal computer (UMPC), netbook, or personal digital assistant (PDA), etc., while a non-mobile electronic device can be a server, network attached storage (NAS), or personal computer (PC), etc. This invention does not impose specific limitations.

[0027] The following describes the technical solution of the present invention in detail using the method for determining the reachability of communication provided by the present invention, which is executed by a computer.

[0028] In step 110, within a preset range centered on the ground station coordinates, multiple geographic coordinate points are generated based on preset distance step size and preset angle step size.

[0029] Predetermine the farthest judgment distance Only judge Is communication reachable within the area? The furthest point from the ground station is used to determine the distance. Using the ground station coordinates as the boundary, a preset range can be obtained. This preset range is understood to be a circle centered on the ground station coordinates.

[0030] After determining the preset range, with the ground station as the center, multiple radially distributed geographic coordinate points are generated within the preset range according to fixed preset distance and angle step sizes. Specifically, this can be done as follows: Figure 2 The diagram illustrating the generation of multiple geographic coordinate points provided by this invention is shown in the figure. The radius is the preset range. Point A is the ground station coordinate point. θ is the preset angle step size. The interval between ground coordinate points is the preset distance step size. The formula for generating geographic coordinate points is: ; in, To preset the distance step size, The coordinates of the ground station are as follows, given the preset angle step size. , These are geographic coordinates.

[0031] Understandably, determining the reachability of aircraft communication involves analyzing the communication capabilities of each geographic coordinate point within a preset range to determine whether communication between the aircraft and the ground station is possible at each point. It's also understandable that, based on all communicable geographic coordinate points selected within the preset range, an irregular range is constructed, representing the reachability of the aircraft's communication with the ground station.

[0032] In step 120, a geometric visibility analysis is performed on each of the geographic coordinate points to determine the geometric visibility analysis results for each geographic coordinate point, and a signal quality visibility analysis is performed on each of the geographic coordinate points to determine the signal quality visibility analysis results for each geographic coordinate point.

[0033] It should be noted that geometrical line-of-sight analysis determines whether there is a direct, unobstructed line-of-sight path between the ground station and the aircraft. It primarily considers physical obstacles such as terrain and the curvature of the Earth.

[0034] Geometric visibility analysis is performed on each generated geographic coordinate point to determine whether there is an unobstructed straight-line propagation path between the ground station and the point.

[0035] Optionally, the geometrical visibility analysis results can be further determined by calculating the theoretical line-of-sight height due to the Earth's curvature and comparing it with the actual terrain height. If the theoretical line-of-sight height is consistently higher than the terrain height, then the point is considered to have geometrical visibility from the ground station; otherwise, it is not. For example, in a mountainous environment, if the height of the mountain at a certain geographic coordinate point exceeds the theoretical line-of-sight height, then that point is geometrically not visible from the ground station. The geometrical visibility analysis results can initially screen out geographic coordinate points that may have communication paths.

[0036] Signal quality line-of-sight analysis takes into account factors such as radio wave attenuation and interference during propagation. Based on parameters such as communication frequency, transmit power, and antenna gain, combined with the distance between the geographical coordinates and the ground station, as well as the influence of external interference factors, the communication signal strength between the aircraft and the ground station can be calculated.

[0037] Optionally, the interference of environmental factors on the signal can be considered, such as the absorption and scattering of the signal by buildings and vegetation, as well as the impact of rainfall on signal propagation, so as to further determine the signal quality visibility analysis results.

[0038] In step 130, based on the geometric line-of-sight analysis results and the signal quality line-of-sight analysis results, the communication reachability range of the aircraft communicating with the ground station is determined.

[0039] The combined geometrical line-of-sight analysis results and signal quality line-of-sight analysis results are used to assess the communication process between the aircraft and the ground station, determining whether communication between the aircraft and the ground station is possible.

[0040] The system determines whether the aircraft can communicate with the ground station by examining all geographic coordinate points within a preset range. Based on the results, all communicable geographic coordinate points within the preset range are selected, and an irregular range is constructed, which is the communication reach range of the aircraft that communicates with the ground station.

[0041] The method for determining the reachability range provided by this invention can accurately determine whether there are unobstructed propagation paths between the ground station and various geographic coordinate points through geometric line-of-sight analysis, effectively determining the impact of terrain obstacles on communication. Through signal quality line-of-sight analysis, it determines the impact on signal transmission quality between geographic coordinate points and the ground station. Combining the results of geometric and signal quality line-of-sight analyses to comprehensively determine the communication reachability range, considering multiple influencing factors in the signal propagation path, not only improves the accuracy of the communication reachability range analysis between the aircraft and the ground station but also ensures the reliability of communication between the ground station and the aircraft.

[0042] In one embodiment, the signal quality visibility analysis includes Fresnel zone occlusion analysis and rainfall signal attenuation analysis.

[0043] The Fresnel zone is an ellipsoidal region surrounding the line-of-sight path of radio waves, and its state significantly impacts signal propagation. When performing Fresnel zone obstruction analysis, the radii of each order of the Fresnel zone need to be calculated based on parameters such as the communication frequency and the distance between the ground station and geographic coordinates. Then, combined with geographic information data, it is determined whether obstruction exists within the Fresnel zone. Obstruction by obstacles causes signal diffraction, leading to signal energy dispersion and intensity reduction, thus affecting communication quality. The Fresnel zone obstruction analysis process can be further refined based on the extent of obstruction within the Fresnel zone.

[0044] Because raindrops absorb and scatter radio waves, the degree of signal attenuation varies depending on the rainfall intensity. Rainfall intensity data can be used to calculate the amount of signal attenuation caused by rainfall. If the attenuation is too great, the signal strength may fall below the reception threshold, causing communication interruption.

[0045] Combining these two analyses allows for a more accurate assessment of signal quality and line-of-sight conditions.

[0046] In one embodiment, determining the communication reachability of an aircraft communicating with the ground station based on the geometric line-of-sight analysis results and the signal quality line-of-sight analysis results includes: if the aircraft and the ground station are geometrically line-of-sight based on the geometric line-of-sight analysis results, determining the communication reachability of the aircraft based on the analysis results of the rainfall signal attenuation analysis; if the aircraft and the ground station are geometrically not line-of-sight based on the geometric line-of-sight analysis results, determining the communication reachability of the aircraft based on the analysis results of the Fresnel zone obstruction analysis and the analysis results of the rainfall signal attenuation analysis.

[0047] Understandably, when geometrical visibility analysis determines there are no physical obstructions between two points, the first Fresnel zone is unobstructed, and its impact can be ignored, indicating that communication between the aircraft and the ground station is reachable under normal weather conditions. Therefore, the impact of weather on communication between the aircraft and the ground station can be further considered to determine whether communication is reachable under weather conditions.

[0048] If geometrical obstruction is confirmed, further analysis is required. Specifically, when terrain obstruction exists, the straight path is blocked. Whether communication can be established in this situation depends on the signal's diffraction capability. Fresnel zone obstruction analysis can achieve this by assessing the signal's ability to bypass obstacles. However, the diffracted signal is still affected by rainfall. Therefore, two factors need to be considered comprehensively: diffraction loss due to geometric obstruction (quantified through Fresnel zone analysis) and rainfall attenuation.

[0049] In one embodiment, performing geometrical visibility analysis on the geographic coordinate points includes: determining multiple intermediate geographic coordinate points between the ground station and the ground projection point of the aircraft, and acquiring terrain elevation data for each intermediate geographic coordinate point; determining the line-of-sight height of the line-of-sight path between the ground station and the aircraft at each intermediate geographic coordinate point; and comparing the line-of-sight height with the terrain elevation data of each intermediate geographic coordinate point to determine whether terrain obstruction exists.

[0050] Multiple intermediate geographic coordinate points are determined along a straight line connecting the ground station and the aircraft's ground projection point. Topographic elevation data for each intermediate geographic coordinate point can be accurately obtained using a geographic information system or digital elevation model. Simultaneously, based on the Earth's curvature and the altitudes of both communicating parties, the line-of-sight height between the ground station and the aircraft at each intermediate geographic coordinate point is determined.

[0051] Compare the line-of-sight height with the terrain elevation data of each intermediate geographic coordinate point. If the terrain elevation of an intermediate geographic coordinate point is higher than the corresponding line-of-sight height, it indicates that there is terrain obstruction at that point; conversely, if the terrain elevation is lower than the line-of-sight height, it indicates that there is no terrain obstruction at that point.

[0052] Optional, such as Figure 3 The geometric visibility analysis diagram provided by this invention is shown. During geometric visibility analysis, the analysis is performed along a line direction using any radius within a preset range. For any radius along the line direction, multiple geographic coordinate points are included.

[0053] Calculate sequentially from ground station coordinate point A, until... On the extension of the line connecting each point to ground station coordinate point A (i.e., the line of sight), find the point v' whose ground projection distance is equal to the ground distance from the aircraft to point A, and calculate its altitude. And compare the altitude of the aircraft v. , where refH is the elevation difference between the aircraft and point A. ; in, For each point, the terrain elevation data is available. The terrain elevation data can be queried as follows: Figure 4 The elevation data provided by this invention is illustrated in the diagram. Taking three geographic coordinate points as an example, the corresponding terrain elevation data are: .

[0054] This requires calculating the relative altitude drop caused by the Earth's curvature. : ; in, It is the great circle distance between intermediate geographic coordinate point A and intermediate geographic coordinate point B, specifically: ; in, It is the Earth's radius. , ( ) is the latitude and longitude of point A. , () is the latitude and longitude of point B.

[0055] Analyze each geographic coordinate point along the current radius line one by one, if This indicates that the current geographic coordinate point has a line of sight. If If the current geographic coordinates are out of sight, stop iterating and jump to the next geographic coordinate. Continue this loop until the furthest distance is reached. Stop iterating.

[0056] In one embodiment, performing rainfall signal attenuation analysis on the geographic coordinate point includes: determining the signal power of the receiver based on the transmitter's transmit power, transmitter's antenna gain, receiver's antenna gain, and signal attenuation; the signal attenuation includes distance signal attenuation and rainfall signal attenuation; and determining whether the receiver and the transmitter have successfully communicated based on the receiver's signal power and receiver sensitivity.

[0057] It should be noted that the transmitting end can be either a ground station or an aircraft, and the receiving end can be either a ground station or an aircraft. The calculation for whether communication is possible can be performed twice. Uplink involves the ground station transmitting signals and the aircraft receiving them; downlink involves the aircraft transmitting signals and the ground station receiving them. Only when both the uplink and downlink are confirmed to be working can communication between the ground station and the aircraft be determined.

[0058] Specifically, the inputs in the judgment process include: the transmitter's transmit power. Receiver sensitivity Transmitter antenna gain Receiver antenna gain .

[0059] To query the forecast raster data of rainfall intensity for a given geographic coordinate point, typically once per hour with a resolution of 0.25 degrees, the rainfall intensity Ir for that point is obtained through bicubic interpolation (interpolating time and space). Calculate rain attenuation given rainfall intensity Ir (mm / h) ; ; ; in, As an intermediate quantity, These are empirical parameters, with values ​​given by ITU-R P.838. ITU-R P.838 is a standard recommendation regarding rainfall-specific attenuation models, primarily used to predict signal transmission loss due to rainfall in wireless communication systems.

[0060] Calculate signal attenuation caused by distance The method is given by ITU-R P.528. Calculate the total signal attenuation. .

[0061] Calculate the signal power at the receiving end ; To determine if communication was successful, if... If the communication is successful, then the communication is successful; otherwise, the communication fails.

[0062] In one embodiment, performing Fresnel occlusion analysis on the geographic coordinate point includes: calculating the Fresnel radius of the geographic coordinate point based on the communication frequency between the aircraft and the ground station, the distance between the aircraft and the geographic coordinate point, and the distance between the geographic coordinate point and the aircraft; and determining the Fresnel occlusion range of the geographic coordinate point based on the Fresnel radius.

[0063] like Figure 5 As shown in the schematic diagram of Fresnel occlusion analysis provided by this invention, Fresnel occlusion analysis is performed on the geographic coordinate point, and the terrain elevation data of the geographic coordinate point is read. make , It is the distance from the ground station to the geographic coordinate point (great circle distance). D is the distance from the geographic coordinate point to the spacecraft (great circle distance), and D is the distance between the spacecraft and the ground station. The Fresnel zone radius is calculated. for: ; in, This refers to the communication frequency between the aircraft and the ground station.

[0064] The area obscured in Fresnel district for: ; For complete visibility, To completely block out, This is partial occlusion. Specifically, it can be seen as follows: Figure 5 The triangles of different colors represent the occlusion range of different obstacles.

[0065] The communication reachability determination apparatus provided by the present invention will be described below. The communication reachability determination apparatus described below and the communication reachability determination method described above can be referred to in correspondence.

[0066] like Figure 6 As shown, the device includes: The geographic coordinate point generation module 610 is used to generate multiple geographic coordinate points within a preset range centered on the ground station coordinates, based on a preset distance step and a preset angle step. The visibility analysis module 620 is used to perform geometric visibility analysis on each of the geographic coordinate points, determine the geometric visibility analysis results of each geographic coordinate point, and perform signal quality visibility analysis on each of the geographic coordinate points, determine the signal quality visibility analysis results of each geographic coordinate point. The reachability determination module 630 is used to determine the communication reachability of the aircraft communicating with the ground station based on the geometric line-of-sight analysis results and the signal quality line-of-sight analysis results.

[0067] The communication reachability determination device provided by this invention can accurately determine whether there are unobstructed propagation paths between the ground station and various geographic coordinate points through geometric line-of-sight analysis, effectively determining the impact of terrain obstacles on communication. Through signal quality line-of-sight analysis, it determines the impact on signal transmission quality between geographic coordinate points and the ground station. Combining the results of geometric and signal quality line-of-sight analyses to comprehensively determine the communication reachability range, considering multiple influencing factors in the signal propagation path, not only improves the accuracy of communication reachability analysis between the aircraft and the ground station but also ensures the reliability of communication between the ground station and the aircraft.

[0068] In one embodiment, the visibility analysis module 620 is specifically used for: The signal quality visibility analysis includes Fresnel zone occlusion analysis and rainfall signal attenuation analysis.

[0069] In one embodiment, the visibility analysis module 620 is further configured to: The determination of the communication reachability range of the aircraft communicating with the ground station based on the geometric line-of-sight analysis results and the signal quality line-of-sight analysis results includes: Based on the geometric line-of-sight analysis results, if the geometric line-of-sight between the aircraft and the ground station is determined, then based on the analysis results of the rainfall signal attenuation analysis, the communication reachability range of the aircraft is determined. If, based on the geometric line-of-sight analysis results, it is determined that the aircraft and the ground station are geometrically out of sight, the communication reachability range of the aircraft is determined based on the Fresnel zone obstruction analysis results and the rainfall signal attenuation analysis results.

[0070] In one embodiment, the visibility analysis module 620 is further configured to: Perform geometric visibility analysis on the geographic coordinate points, including: Determine multiple intermediate geographic coordinate points between the ground station and the ground projection point of the aircraft, and obtain the terrain elevation data of each intermediate geographic coordinate point; Determine the line-of-sight height of the line-of-sight path between the ground station and the aircraft at each of the intermediate geographic coordinate points; The line-of-sight height is compared with the terrain elevation data of each intermediate geographic coordinate point to determine whether there is terrain obstruction.

[0071] In one embodiment, the visibility analysis module 620 is further configured to: Perform rainfall signal attenuation analysis on the geographic coordinate points, including: The signal power at the receiver is determined based on the transmitter's transmit power, transmitter's antenna gain, receiver's antenna gain, and signal attenuation; the signal attenuation includes distance signal attenuation and rainfall signal attenuation. Based on the signal power and sensitivity of the receiving end, it is determined whether the receiving end and the transmitting end have successfully communicated.

[0072] In one embodiment, the visibility analysis module 620 is further configured to: Perform Fresnel occlusion analysis on the geographic coordinates, including: The Fresnel zone radius of the geographic coordinate point is calculated based on the communication frequency between the aircraft and the ground station, the distance between the aircraft and the ground station, the distance between the geographic coordinate point and the ground station, and the distance between the geographic coordinate point and the aircraft. Based on the Fresnel zone radius, the Fresnel zone occlusion range of the geographic coordinate point is determined.

[0073] Figure 7 An example is a schematic diagram of the physical structure of an electronic device, such as... Figure 7 As shown, the electronic device may include a processor 710, a communications interface 720, a memory 730, and a communication bus 740, wherein the processor 710, the communications interface 720, and the memory 730 communicate with each other via the communication bus 740. The processor 710 can call logical instructions in the memory 730 to execute a method for determining the reachability of communication, the method including: generating multiple geographic coordinate points within a preset range centered on the ground station coordinates, based on a preset distance step size and a preset angle step size; Perform geometric visibility analysis on each of the geographic coordinate points to determine the geometric visibility analysis results for each geographic coordinate point, and perform signal quality visibility analysis on each of the geographic coordinate points to determine the signal quality visibility analysis results for each geographic coordinate point. Based on the geometric line-of-sight analysis results and the signal quality line-of-sight analysis results, the communication reachability range of the aircraft communicating with the ground station is determined.

[0074] Furthermore, the logical instructions in the aforementioned memory 730 can be implemented as software functional units and, when sold or used as independent products, can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, essentially, or the part that contributes to the prior art, or a part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0075] On the other hand, the present invention also provides a computer program product, the computer program product including a computer program, the computer program being able to be stored on a non-transitory computer-readable storage medium, the computer program being executed by a processor, the computer being able to execute the method for determining the communication reachability provided by the above methods, the method including: generating multiple geographic coordinate points within a preset range centered on the ground station coordinates, based on a preset distance step size and a preset angle step size; Perform geometric visibility analysis on each of the geographic coordinate points to determine the geometric visibility analysis results for each geographic coordinate point, and perform signal quality visibility analysis on each of the geographic coordinate points to determine the signal quality visibility analysis results for each geographic coordinate point. Based on the geometric line-of-sight analysis results and the signal quality line-of-sight analysis results, the communication reachability range of the aircraft communicating with the ground station is determined.

[0076] In another aspect, the present invention also provides a non-transitory computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements a method for determining the reachability of communication provided by the methods described above, the method comprising: generating multiple geographic coordinate points within a preset range centered on the coordinates of a ground station, based on a preset distance step and a preset angle step; Perform geometric visibility analysis on each of the geographic coordinate points to determine the geometric visibility analysis results for each geographic coordinate point, and perform signal quality visibility analysis on each of the geographic coordinate points to determine the signal quality visibility analysis results for each geographic coordinate point. Based on the geometric line-of-sight analysis results and the signal quality line-of-sight analysis results, the communication reachability range of the aircraft communicating with the ground station is determined.

[0077] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs. Those skilled in the art can understand and implement this without any creative effort.

[0078] Through the above description of the embodiments, those skilled in the art can clearly understand that each embodiment can be implemented by means of software plus necessary general-purpose hardware platforms, and of course, it can also be implemented by hardware. Based on this understanding, the above technical solutions, in essence or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, magnetic disk, optical disk, etc., and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute the methods described in the various embodiments or some parts of the embodiments.

[0079] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for determining the reachability range of communication, characterized in that, include: Within a preset range centered on the ground station coordinates, multiple geographic coordinate points are generated based on preset distance step size and preset angle step size; A geometrical visibility analysis is performed on each of the geographic coordinate points to determine the geometrical visibility analysis results for each geographic coordinate point. A signal quality visibility analysis is also performed on each of the geographic coordinate points to determine the signal quality visibility analysis results for each geographic coordinate point. The signal quality visibility analysis includes Fresnel zone occlusion analysis and rainfall signal attenuation analysis. The geometrical visibility analysis considers the effects of terrain and Earth's curvature. Based on the geometric line-of-sight analysis results and the signal quality line-of-sight analysis results, the communication reachability range of the aircraft communicating with the ground station is determined, including: Based on the geometric line-of-sight analysis results, if the geometric line-of-sight between the aircraft and the ground station is determined, then based on the analysis results of the rainfall signal attenuation analysis, the communication reachability range of the aircraft is determined. If, based on the geometric line-of-sight analysis results, it is determined that the aircraft and the ground station are geometrically out of sight, the communication reachability range of the aircraft is determined based on the Fresnel zone obstruction analysis results and the rainfall signal attenuation analysis results.

2. The method for determining the reachability of communication according to claim 1, characterized in that, Perform geometric visibility analysis on the geographic coordinate points, including: Determine multiple intermediate geographic coordinate points between the ground station and the ground projection point of the aircraft, and obtain the terrain elevation data of each intermediate geographic coordinate point; Determine the line-of-sight height of the line-of-sight path between the ground station and the aircraft at each of the intermediate geographic coordinate points; The line-of-sight height is compared with the terrain elevation data of each intermediate geographic coordinate point to determine whether there is terrain obstruction.

3. The method for determining the reachability of communication according to claim 1, characterized in that, Perform rainfall signal attenuation analysis on the geographic coordinate points, including: The signal power at the receiver is determined based on the transmitter's transmit power, transmitter's antenna gain, receiver's antenna gain, and signal attenuation; the signal attenuation includes distance signal attenuation and rainfall signal attenuation. Based on the signal power and sensitivity of the receiving end, it is determined whether the receiving end and the transmitting end have successfully communicated.

4. The method for determining the reachability of communication according to claim 1, characterized in that, Perform Fresnel occlusion analysis on the geographic coordinates, including: The Fresnel zone radius of the geographic coordinate point is calculated based on the communication frequency between the aircraft and the ground station, the distance between the aircraft and the ground station, the distance between the geographic coordinate point and the ground station, and the distance between the geographic coordinate point and the aircraft. Based on the Fresnel zone radius, the Fresnel zone occlusion range of the geographic coordinate point is determined.

5. A device for determining the reachability of communication range, characterized in that, include: The geographic coordinate point generation module is used to generate multiple geographic coordinate points within a preset range centered on the ground station coordinates, based on preset distance steps and preset angle steps. The visibility analysis module is used to perform geometric visibility analysis on each of the geographic coordinate points, determine the geometric visibility analysis results for each geographic coordinate point, and perform signal quality visibility analysis on each of the geographic coordinate points, determine the signal quality visibility analysis results for each geographic coordinate point; the signal quality visibility analysis includes Fresnel zone occlusion analysis and rainfall signal attenuation analysis; the geometric visibility analysis takes into account the effects of terrain and Earth curvature. The reachability determination module is used to determine the communication reachability of an aircraft communicating with the ground station based on the geometric line-of-sight analysis results and the signal quality line-of-sight analysis results. This includes: if the aircraft and the ground station are geometrically line-of-sight based on the geometric line-of-sight analysis results, determining the communication reachability of the aircraft based on the analysis results of the rainfall signal attenuation analysis; and if the aircraft and the ground station are geometrically not line-of-sight based on the geometric line-of-sight analysis results, determining the communication reachability of the aircraft based on the analysis results of the Fresnel zone obstruction analysis and the analysis results of the rainfall signal attenuation analysis.

6. An electronic device comprising a memory, a processor, and a computer program stored in the memory and running on the processor, characterized in that, When the processor executes the computer program, it implements the method for determining the reachability of communication as described in any one of claims 1 to 4.

7. A non-transitory computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by a processor, it implements the method for determining the reachability of communication as described in any one of claims 1 to 4.

8. A computer program product, comprising a computer program, characterized in that, When the computer program is executed by a processor, it implements the method for determining the reachability of communication as described in any one of claims 1 to 4.

Images