Signal optimization method and device for array antenna, and array antenna

Abstract

The present invention provides a signal optimization method, device and array antenna of an array antenna. The array antenna is composed of multiple array elements. The method includes: obtaining the spatial signal strength distribution data of the target array antenna at the current position and the position of each array element; determining the first direction in which the signal strength adjustment is required based on the spatial signal strength distribution data; determining the first array element closest to the first direction based on the position of each array element; reducing the main lobe width of the lobe diagram corresponding to the first array element so that the main lobe maximum radiation direction corresponding to the first array element is consistent with the first direction. Thus, by detecting the signal strength distribution in the space around the array antenna, by reducing the main lobe width of the array element corresponding to the direction with the weakest signal strength, the main lobe width is made more slender, the gain is improved, the received signal width is sacrificed to ensure that the signal strength remains optimal, the overall signal receiving strength of the array antenna is improved, the automatic real-time optimization of the array antenna is realized, and the communication quality is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of engineering machinery communications, and in particular to a signal optimization method and device for an array antenna, and an array antenna. Background Art

[0002] As construction machinery moves towards intelligent networking, wireless communication is an indispensable part of it. Wireless communication relies on radio waves to transmit information, and there are always interference signals during the transmission process. In the field of construction machinery, due to the complex working environment of construction machinery, wireless signals are easily blocked by large obstacles. For example, in working scenes such as mines and tunnels, the wireless signal may become weaker and weaker as the project progresses; in the factory environment, there are many interference signals due to reflection, refraction, etc., making it impossible to guarantee the quality of wireless signals.

[0003] Since the directivity of a single antenna is limited, in order to adapt to the application of various occasions, two or more single antennas working at the same frequency are fed and arranged in space according to certain requirements to form an array antenna. The antenna radiation unit that constitutes the array antenna is called an array element. Compared with the traditional single antenna, the array antenna can significantly improve the signal reception strength. Therefore, array antennas are usually used to communicate with the cloud control platform on engineering machinery such as excavators, unloading trucks, cranes, and forklifts. However, in remote mountainous areas and other working conditions, the distribution density of communication base stations is low, and the signal strength in all directions at a certain spatial position is unevenly distributed. In addition, engineering vehicles are mobile operations. After moving to different positions, the spatial distribution characteristics of the signal strength at that position may be completely different, which affects the signal strength received by the array antenna, and then affects the communication quality between the engineering machinery and the cloud control platform. Therefore, how to improve the performance of the array antenna receiving signal on engineering machinery is of great significance to ensure the communication quality between engineering machinery and the cloud control platform. Summary of the invention

[0004] In view of this, an embodiment of the present invention provides a signal optimization method, device and array antenna of an array antenna to overcome the problem in the prior art that when the array antenna is in a complex environment, the received signal strength is affected, thereby affecting the quality of communication between the engineering machinery equipment and the outside world.

[0005] According to a first aspect, an embodiment of the present invention provides a signal optimization method for an array antenna, wherein the array antenna is composed of a plurality of array elements, and the method includes:

[0006] Obtain the spatial signal strength distribution data of the target array antenna at the current position and the position of each array element;

[0007] Based on the spatial signal strength distribution data, determining a first direction in which signal strength adjustment is required;

[0008] Based on the positions of the respective array elements, determining a first array element closest to the first direction;

[0009] The main lobe width of the lobe pattern corresponding to the first array element is reduced so that the maximum radiation direction of the main lobe corresponding to the first array element is consistent with the first direction.

[0010] Optionally, determining a first direction in which signal strength adjustment is required based on the spatial signal strength distribution data includes:

[0011] Based on the spatial signal strength distribution data, determining a second direction with the weakest signal strength and a third direction with the strongest signal strength;

[0012] The second direction and / or the third direction is determined as the first direction.

[0013] Optionally, determining, based on positions of each array element, a first array element closest to the first direction includes:

[0014] Calculating respectively a first distance between each array element and the first direction;

[0015] Sort the first distances corresponding to the array elements;

[0016] Based on the sorting result, the array element with the smallest first distance is determined as the first array element.

[0017] Optionally, before determining the first direction in which signal strength adjustment is required based on the spatial signal strength distribution data, the method further includes:

[0018] Based on the spatial signal strength distribution data, determining whether the target array antenna meets the set communication requirements;

[0019] When the target array antenna does not meet the set communication requirement, a first direction in which signal strength adjustment is required is determined based on the spatial signal strength distribution data.

[0020] Optionally, the method further comprises:

[0021] Reacquire the spatial signal strength distribution data of the target array antenna at the current position, and return to the step of determining whether the target array antenna meets the set communication requirements based on the spatial signal strength distribution data.

[0022] Optionally, judging whether the target array antenna meets a set communication requirement based on the spatial signal strength distribution data includes:

[0023] Calculating the current total signal strength of the target array antenna based on the spatial signal strength distribution data;

[0024] Based on the relationship between the current total signal strength and the preset overall signal strength, it is determined whether the target array antenna meets the set communication requirements.

[0025] Optionally, the determining whether the target array antenna meets a set communication requirement based on a relationship between the current total signal strength and a preset overall signal strength includes:

[0026] Determining whether the current total signal strength is less than the preset overall signal strength;

[0027] When the current total signal strength is less than the preset overall signal strength, it is determined that the target array antenna does not meet the set communication requirement.

[0028] Optionally, judging whether the target array antenna meets a set communication requirement based on the spatial signal strength distribution data further includes:

[0029] Obtaining a first overall signal strength corresponding to a previous optimization time period of the target array antenna at the current position;

[0030] Calculate the average signal strength of the target array antenna and the signal strengths in different directions based on the spatial signal strength distribution data;

[0031] Determine whether the current overall signal strength is lower than a first preset proportion of the first overall signal strength, or determine whether there is a signal strength in at least one direction lower than a second preset proportion of the average signal strength;

[0032] When the current overall signal strength is lower than a first preset proportion of the first overall signal strength, or when the signal strength in at least one direction is lower than a second preset proportion of the average signal strength, it is determined that the target array antenna does not meet the set communication requirements.

[0033] According to a second aspect, an embodiment of the present invention provides a signal optimization device for an array antenna, wherein the array antenna is composed of a plurality of array elements, and the device includes:

[0034] An acquisition module is used to obtain the spatial signal strength distribution data of the target array antenna at the current position and the position of each array element;

[0035] A first processing module, configured to determine a first direction in which signal strength adjustment is required based on the spatial signal strength distribution data;

[0036] A second processing module, configured to determine, based on positions of each array element, a first array element that is closest to the first direction;

[0037] The third processing module is used to reduce the main lobe width of the lobe pattern corresponding to the first array element, so that the maximum radiation direction of the main lobe corresponding to the first array element is consistent with the first direction.

[0038] According to a third aspect, an embodiment of the present invention provides an array antenna, comprising: an antenna receiving pattern adjustment and correction module and a plurality of array elements, wherein:

[0039] The antenna receiving pattern adjustment and correction module includes: a memory and a processor, the memory and the processor are communicatively connected to each other, the memory stores computer instructions, and the processor executes the method described in the first aspect or any optional implementation manner of the first aspect by executing the computer instructions.

[0040] According to a fourth aspect, an embodiment of the present invention provides a computer-readable storage medium, wherein the computer-readable storage medium stores computer instructions, wherein the computer instructions are used to enable the computer to execute the method described in the first aspect or any optional implementation manner of the first aspect.

[0041] The technical solution of the present invention has the following advantages:

[0042] The signal optimization method and device of the array antenna provided by the embodiment of the present invention, the array antenna is composed of multiple array elements, by obtaining the spatial signal strength distribution data of the target array antenna at the current position and the position of each array element; based on the spatial signal strength distribution data, determining the first direction in which the signal strength adjustment is required; based on the position of each array element, determining the first array element closest to the first direction; reducing the main lobe width of the lobe diagram corresponding to the first array element, so that the main lobe maximum radiation direction corresponding to the first array element is consistent with the first direction. Thus, by detecting the signal strength distribution in the space around the array antenna, the main lobe width of the array element corresponding to the direction with the weakest signal strength is reduced, so that the main lobe maximum radiation direction of the array element is consistent with the direction with the weakest signal. By making the main lobe width more slender and improving the gain, sacrificing its received signal width to ensure that the signal strength remains optimal, thereby improving the signal reception strength in the direction with the weakest signal strength, and then improving the overall signal reception strength of the array antenna, the automatic real-time optimization of the array antenna signal is realized, and the communication quality of the array antenna is guaranteed.

[0043] The array antenna provided by the embodiment of the present invention includes: an antenna receiving pattern adjustment and correction module and multiple array elements, wherein the antenna receiving pattern adjustment and correction module is used to implement the method provided by another embodiment of the present invention, thereby adding an antenna receiving pattern adjustment and correction module on the basis of a traditional array antenna, detecting the signal strength distribution in the space around the array antenna, and reducing the main lobe width of the array element corresponding to the direction with the weakest signal strength, so that the main lobe maximum radiation direction of the array element is consistent with the direction with the weakest signal. By making the main lobe width more slender and improving the gain, sacrificing the received signal width to ensure that the signal strength remains optimal, thereby improving the signal reception strength in the direction with the weakest signal strength, and then improving the overall signal reception strength of the array antenna, the automatic real-time optimization of the array antenna signal is realized, and the communication quality of the array antenna is guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0045] Figure 1 is a schematic structural diagram of an array antenna according to an embodiment of the present invention;

[0046] Figure 2 A flow chart of a signal optimization method for an array antenna according to an embodiment of the present invention;

[0047] Figure 3 A schematic diagram of the structure of a signal optimization device for an array antenna according to an embodiment of the present invention;

[0048] Figure 4 It is a structural schematic diagram of an antenna receiving pattern adjustment and correction module in an array antenna according to an embodiment of the present invention. DETAILED DESCRIPTION

[0049] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0050] The technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0051] As construction machinery moves towards intelligent networking, wireless communication is an indispensable part of it. Wireless communication relies on radio waves to transmit information, and there are always interference signals during the transmission process. In the field of construction machinery, due to the complex working environment of construction machinery, wireless signals are easily blocked by large obstacles. For example, in working scenes such as mines and tunnels, the wireless signal may become weaker and weaker as the project progresses. In the factory environment, there are many interference signals due to reflection, refraction, etc., making it impossible to guarantee the quality of wireless signals.

[0052] Since the directivity of a single antenna is limited, in order to be suitable for applications in various occasions, two or more single antennas working at the same frequency are fed and arranged in space according to certain requirements to form an array antenna. The antenna radiation unit that constitutes the array antenna is called an array element. Array antennas can significantly improve the signal reception strength compared to traditional single antennas. Therefore, engineering machinery equipment such as excavators, unloading trucks, cranes, forklifts, etc. usually use array antennas to communicate with cloud control platforms. However, in remote mountainous areas and other working conditions, the distribution density of communication base stations is low, and the signal strength at a certain spatial position is unevenly distributed. In addition, engineering vehicles are mobile operations. After moving to different positions, the spatial distribution characteristics of the signal strength at that position may be completely different, which affects the signal strength received by the array antenna, and then affects the communication quality between the engineering machinery equipment and the cloud control platform. Therefore, how to improve the performance of the signal received by the array antenna on the engineering machinery equipment is of great significance to ensuring the communication quality between the engineering machinery equipment and the cloud control platform.

[0053] Based on the above problems, an embodiment of the present invention provides an array antenna, such as Figure 1 As shown, the array antenna includes: an antenna receiving pattern adjustment and correction module 201 and a plurality of array elements 202. The antenna receiving pattern adjustment and correction module 201 is used to detect the signal strength distribution in the space around the array antenna, and then adjust the lobe pattern of the array element 202 to ensure the communication quality of the array antenna. The detailed working process of the antenna receiving pattern adjustment and correction module 201 is described in detail in the relevant description of the method embodiment below, and will not be repeated here.

[0054] Specifically, in actual applications, similar to existing array antennas, the array antenna provided in an embodiment of the present invention also includes: a signal transceiver, a main body connection component, an energy conversion component, a supporting body, a battery and other hardware structures. The specific structure and working principle of each component are similar to those of existing array antennas and will not be repeated here.

[0055] Through the cooperation of the above-mentioned components, the antenna array provided by the embodiment of the present invention adds an antenna receiving pattern adjustment and correction module on the basis of the traditional array antenna, detects the signal strength distribution in the space around the array antenna, and reduces the main lobe width of the array element corresponding to the direction with the weakest signal strength, so that the main lobe maximum radiation direction of the array element is consistent with the direction with the weakest signal. By making the main lobe width more slender and improving the gain, sacrificing the received signal width to ensure that the signal strength remains optimal, thereby improving the signal reception strength in the direction with the weakest signal strength, and then improving the overall signal reception strength of the array antenna, the automatic real-time optimization of the array antenna signal is realized, and the communication quality of the array antenna is guaranteed.

[0056] The present invention also provides a signal optimization method for an array antenna, which is applied to Figure 1 The antenna receiving pattern adjustment and correction module 201 shown in FIG. Figure 2 As shown, the signal optimization method of the array antenna provided in the embodiment of the present invention specifically includes the following steps:

[0057] Step S101: Acquire the spatial signal strength distribution data of the target array antenna at the current position and the position of each array element.

[0058] Specifically, when array antennas are applied to engineering machinery and equipment, as the engineering machinery and equipment moves to different environments, they are blocked by large obstacles in the environment, etc., which will cause uneven distribution of spatial signal strength around the array antenna. The method for obtaining specific spatial signal strength distribution data can be implemented by referring to the integrated device or method for obtaining the spatial signal strength distribution of the array antenna in the prior art. The position of the array element can be determined by the current position of the array antenna and the composition structure of the array antenna, or the original position information of the array element is pre-stored in the antenna receiving pattern adjustment and correction module. The present invention is not limited to this.

[0059] Step S102: Determine a first direction in which signal strength adjustment is required based on the spatial signal strength distribution data.

[0060] Specifically, the above step S102 determines the second direction with the weakest signal strength and the third direction with the strongest signal strength based on the spatial signal strength distribution data; and determines the second direction and / or the third direction as the first direction.

[0061] Specifically, affected by the surrounding environment around the array antenna, the spatial signal strength distribution in different directions is uneven. By comparing the signal strengths in different directions, the direction with the weakest signal strength and the direction with the strongest signal strength are obtained.

[0062] It should be noted that in the embodiment of the present invention, the direction with the weakest signal strength is used as the first direction as an example for explanation. In practical applications, the direction with the weakest signal strength and / or the direction with the strongest signal strength are specifically selected as the direction in which the signal strength needs to be adjusted, which can be flexibly set according to the current communication requirements of the antenna array. For example, when the current array antenna communicates with the cloud control platform through the array element with the strongest signal strength, the direction in which the signal strength needs to be adjusted is the direction with the strongest signal strength. When the array antenna communicates with the cloud control platform through all array elements, the communication quality is greatly affected by the direction with the weakest signal strength. At this time, the direction in which the signal strength needs to be adjusted is the direction with the weakest signal strength. In addition, when it is necessary to significantly improve the overall communication performance of the array antenna, the direction with the strongest signal strength and the direction with the weakest signal strength can be used as the direction in which the signal strength needs to be adjusted at the same time, and the present invention is not limited to this. Therefore, the signal strength of the array antenna can be flexibly adjusted according to the actual communication requirements of different array antennas, which has strong flexibility and a wide range of applications, further improving the user experience.

[0063] Step S103: based on the positions of the array elements, determine a first array element that is closest to the first direction.

[0064] Specifically, the above step S103 is specifically performed by respectively calculating the first distance between each array element and the first direction; sorting the first distances corresponding to each array element; and based on the sorting result, determining the array element with the smallest first distance as the first array element.

[0065] By treating each array element as a point and the first direction as a straight line, the shortest distance from the point to the straight line is calculated to be the above-mentioned first distance. In practical applications, the ranges of receiving signals by different array elements may overlap, that is, the direction with the weakest signal strength may have lobe diagrams of multiple array elements including this direction, and the closer the array element is, the greater the influence on the reception of the signal in this direction. Therefore, by comparing the distances between different array elements and the first direction, determining the array element with the shortest distance as the array element to be adjusted, the overall signal optimization effect of the array antenna can be improved, and the optimization efficiency can be further improved.

[0066] Step S104: reducing the main lobe width of the lobe pattern corresponding to the first array element, so that the maximum radiation direction of the main lobe corresponding to the first array element is consistent with the first direction.

[0067] Specifically, the smaller the main lobe width, the more concentrated the electromagnetic energy radiated by the antenna, and the better the directivity. When the embodiment of the present invention detects that the signal strength in a certain direction is reduced, it automatically adjusts the main lobe width of the array element corresponding to that direction, making the main lobe width more slender, improving the gain, and sacrificing its received signal width to ensure that the signal strength remains optimal. In this way, when the signal source is interfered, the internal structure of the antenna can be adaptively adjusted to enhance the signal reception strength.

[0068] By executing the above steps, the signal optimization method of the array antenna provided by the embodiment of the present invention detects the signal strength distribution in the space around the array antenna, and reduces the main lobe width of the array element corresponding to the direction with the weakest signal strength, so that the maximum radiation direction of the main lobe of the array element is consistent with the direction with the weakest signal strength. By making the main lobe width more slender and improving the gain, the received signal width is sacrificed to ensure that the signal strength remains optimal, thereby improving the signal reception strength in the direction with the weakest signal strength, and then improving the overall signal reception strength of the array antenna, the automatic real-time optimization of the array antenna signal is realized, and the communication quality of the array antenna is guaranteed.

[0069] Specifically, in one embodiment, before executing the above step S102, the above-mentioned signal optimization method of the array antenna further includes the following steps:

[0070] Step S105: Based on the spatial signal strength distribution data, determine whether the target array antenna meets the set communication requirements. When the target array antenna does not meet the set communication requirements, execute step S102. When the target array antenna meets the set communication requirements, there is no need to optimize the array antenna signal, and continue to monitor the spatial signal strength distribution data of the target array antenna at the current position.

[0071] Therefore, by detecting the spatial signal strength distribution data of the target array antenna again and judging whether it meets the set communication requirements, when the optimized target array antenna still does not meet the communication requirements, the above-mentioned optimization method can be continued to optimize the array antenna until the communication quality of the array antenna reaches the optimal level, thereby improving the user experience and ensuring that the array antenna can provide better communication quality at any position.

[0072] Specifically, in one embodiment, the above-mentioned signal optimization method of the array antenna further includes the following steps:

[0073] Step S106: reacquire the spatial signal strength distribution data of the target array antenna at the current position, and return to step S105.

[0074] Therefore, by real-time detection of the target array antenna spatial signal strength distribution data, it is possible to self-adjust its main lobe width when the signal strength is detected to be reduced, making its main lobe width more slender, improving the gain, and sacrificing its received signal width to ensure that the signal strength remains optimal. This can also achieve the goal of adaptively adjusting the internal structure of the antenna to enhance the signal reception strength when the signal source is interfered with. In this way, the directional pattern of the array antenna can be adjusted according to the ever-changing engineering operation communication environment, so that the antenna has a relatively strong overall signal at any position, and selectively enhances the signal reception strength in a certain direction, further ensuring the communication quality of the array antenna.

[0075] Specifically, in one embodiment, the above step S105 specifically includes the following steps:

[0076] Step S201: Calculate the current total signal strength of the target array antenna based on the spatial signal strength distribution data.

[0077] Specifically, the method of calculating the current total signal strength based on the spatial signal strength distribution data is a prior art and will not be described in detail here. In addition, in practical applications, the current total signal strength of the target antenna array may also be directly collected, and the present invention is not limited thereto.

[0078] Step S202: Based on the relationship between the current total signal strength and the preset overall signal strength, determine whether the target array antenna meets the set communication requirements.

[0079] Specifically, the above step S202 specifically determines whether the current total signal strength is less than the preset overall signal strength; when the current total signal strength is less than the preset overall signal strength, it is determined that the target array antenna does not meet the set communication requirements, and step S203 is executed. When the target array antenna meets the set communication requirements, there is no need to optimize the signal of the array antenna, and the spatial signal strength distribution data of the target array antenna at the current position can be continuously monitored.

[0080] Step S203: Obtain the first overall signal strength corresponding to the last optimization time period of the target array antenna at the current position.

[0081] Specifically, the array antenna can be optimized according to a fixed time period, such as 30s, 5min, 10min, etc., and can be flexibly set according to the adjustment requirements of the signal strength of the target array antenna, but the present invention is not limited thereto.

[0082] Step S204: Calculate the average signal strength of the target array antenna and the signal strengths in different directions based on the spatial signal strength distribution data.

[0083] Specifically, the method of calculating the average signal strength of the array antenna and the signal strength in different directions based on the spatial signal strength distribution data is a prior art and will not be described in detail here.

[0084] Step S205: Determine whether the current overall signal strength is lower than a first preset proportion of the first overall signal strength, or determine whether the signal strength in at least one direction is lower than a second preset proportion of the average signal strength.

[0085] When the current overall signal strength is lower than a first preset proportion of the first overall signal strength, or the signal strength in at least one direction is lower than a second preset proportion of the average signal strength, it is determined that the target array antenna does not meet the set communication requirements.

[0086] Thus, by setting different array antenna optimization trigger conditions according to communication requirements, automatic optimization processing of the array antenna is realized, without manual participation, and the array antenna can be guaranteed to meet the communication requirements in real time. In the embodiment of the present invention, the array antenna optimization trigger conditions include: the overall signal strength that can be received at the current position is lower than the preset threshold, the overall signal strength that can be received at the current position at this moment is 20% lower than the average value in the previous period of time, the signal strength in certain directions is 50% lower than the average spatial signal strength at the current position, etc. The present invention is only taken as an example and is not limited to this.

[0087] In practical applications, the communication base station system in different working scenarios can adaptively choose to shut down or turn on the communication functions of some radars as the position of the engineering machinery equipment changes, to ensure that the signal source emitted by the base station communicating with the engineering machinery equipment at the current moment is the strongest, so as to further improve the strength of the signal received by the array antenna.

[0088] like Figure 1 The pattern adjustment and correction module 201 in the array antenna shown includes at least a signal strength detection unit, a calculation processing unit, and an adjustment execution unit. The specific working process of the signal optimization of the array antenna is described below through a real application scenario.

[0089] Excavators, unloading trucks, cranes, forklifts and other engineering machinery and equipment often need to work in environments such as mines where communication conditions are not very good. Engineering machinery and equipment can only accept unified scheduling of the platform after being connected to the cloud control platform and have the function of end-cloud collaboration. Therefore, it is very important for engineering machinery and equipment to maintain good communication with the cloud control platform at all times. In open-pit mines in remote mountainous areas, the distribution density of communication base stations is low, and the signal strength at a certain spatial position is unevenly distributed, that is, the array antenna at this position can receive signals from different directions, while the signal strength in some spatial directions is relatively poor. In order to obtain an ideal signal reception effect, the array antenna should be able to receive signals in all directions and have high gain in some spatial directions where the signal strength is relatively poor. On the other hand, since engineering vehicles are mobile operations, after moving to different locations, the spatial distribution characteristics of the signal strength at that location may be completely different.

[0090] The signal strength detection unit of the array antenna of the engineering vehicle detects the signal strength distribution of each direction angle in space, and sends the detection statistical results to the calculation processing unit, which calculates the sum of the signal strengths that can be received at the point and finds the direction with the weakest signal strength. The calculation processing unit determines the receiving pattern adjustment strategy that should be made at this time, and sends the adjustment strategy to the adjustment execution unit, which executes the adjustment strategy according to the preset rules so that the antenna's receiving pattern meets the requirements of the calculation processing unit.

[0091] Exemplarily, the calculation processing unit determines that the conditions under which the receiving pattern adjustment should be made at this time are: the overall signal strength that can be received at the point is lower than the preset threshold; the overall signal strength that can be received at this point is 20% lower than the average value in the previous period of time; the signal strength in certain directions is 50% lower than the average spatial strength of the point. One possible situation of the receiving pattern adjustment strategy made by the calculation unit is to find the antenna array element whose lobe pattern should be adjusted according to the direction of the weakest signal strength. A method for determining that the lobe pattern should be adjusted is to calculate the distance from the point to the center of each array element, and the array element with the closest distance is the array element that needs to be adjusted, narrow the lobe pattern of the antenna array element, and make the direction of the weakest signal strength located within the main lobe lobe pattern of the array element after adjustment, and the direction of the weakest signal strength is the maximum radiation direction of the main lobe of the antenna array element after adjustment. The adjustment execution unit adjusts the maximum radiation direction of the main lobe of the antenna array element to the target direction (i.e., the direction of the weakest signal strength).

[0092] After the signal reception diagram of the array antenna is adjusted, the spatial signal strength distribution of the point is recalculated. If the overall signal strength of the point reaches the preset threshold, the antenna element lobe diagram adjustment is completed. If the overall signal strength of the point does not reach the preset threshold, the calculation unit reanalyzes the reason why the signal strength does not reach the preset threshold, and then re-adjusts using the above process.

[0093] In addition, in practical applications, another possible reason is that after the antenna array element adjusts the lobe pattern, many directions with relatively strong signal strength at that point are no longer within the main lobe pattern of the array element antenna. At this time, the computing unit makes a decision to increase the main lobe width of the array element so that these directions with relatively strong signals are within the main lobe pattern.

[0094] Therefore, according to the spatial distribution characteristics of the signal strength at that location, the adjustment that should be made to the antenna signal pattern is determined. The antenna array element that needs to make a lobe pattern adjustment is found, and the strongest radiation direction of the main lobe of the antenna array element after the adjustment is determined. After the strongest radiation direction of the main lobe of the antenna array element is adjusted to the direction of the weakest signal, if the overall signal strength has not reached the preset value, the calculation and processing unit re-analyzes the reason for the weak overall signal and appropriately widens the main lobe width. In addition, the antenna pattern can be adjusted according to the ever-changing engineering operation communication environment, so that the array antenna has a relatively strong overall signal at any position, and selectively enhances the signal reception strength in a certain direction.

[0095] In addition, since the signal optimization method of the array antenna provided in the embodiment of the present invention only needs to adjust the lobe pattern of certain elements of the array antenna, this adjustment may be mechanical or electrical performance compensation, but the adjustments made are all local, and the directional pattern of the entire antenna still maintains its original shape. This local fine-tuning is very suitable for the characteristics of engineering vehicles that need to move constantly and the surrounding communication environment is constantly changing. Compared with the prior art that each time the communication environment changes, it is necessary to adjust the overall directional pattern of the array antenna, causing its transmission to change significantly, affecting the stability of the array antenna system, the local optimization scheme provided in the embodiment of the present invention is more conducive to ensuring the stability of the array antenna system.

[0096] By executing the above steps, the signal optimization method of the array antenna provided by the embodiment of the present invention detects the signal strength distribution in the space around the array antenna, and reduces the main lobe width of the array element corresponding to the direction with the weakest signal strength, so that the maximum radiation direction of the main lobe of the array element is consistent with the direction with the weakest signal strength. By making the main lobe width more slender and improving the gain, the received signal width is sacrificed to ensure that the signal strength remains optimal, thereby improving the signal reception strength in the direction with the weakest signal strength, and then improving the overall signal reception strength of the array antenna, the automatic real-time optimization of the array antenna signal is realized, and the communication quality of the array antenna is guaranteed.

[0097] The embodiment of the present invention also provides a signal optimization device for an array antenna, such as Figure 3 As shown, the signal optimization device of the array antenna specifically includes:

[0098] The acquisition module 101 is used to acquire the spatial signal strength distribution data of the target array antenna at the current position and the position of each array element. For details, please refer to the relevant description of step S101 in the above method embodiment, which will not be repeated here.

[0099] The first processing module 102 is used to determine a first direction in which signal strength adjustment is required based on the spatial signal strength distribution data. For details, please refer to the relevant description of step S102 in the above method embodiment, which will not be repeated here.

[0100] The second processing module 103 is used to determine the first array element closest to the first direction based on the positions of the array elements. For details, please refer to the relevant description of step S103 in the above method embodiment, which will not be repeated here.

[0101] The third processing module 104 is used to reduce the main lobe width of the lobe pattern corresponding to the first array element so that the main lobe maximum radiation direction corresponding to the first array element is consistent with the first direction. For details, please refer to the relevant description of step S104 in the above method embodiment, which will not be repeated here.

[0102] The signal optimization device for an array antenna provided in an embodiment of the present invention is used to execute the signal optimization method for an array antenna provided in the above embodiment. Its implementation method and principle are the same. For details, please refer to the relevant description of the above method embodiment and will not be repeated here.

[0103] Through the cooperation of the above-mentioned components, the signal optimization device for the array antenna provided by the embodiment of the present invention detects the signal strength distribution in the space around the array antenna, and reduces the main lobe width of the array element corresponding to the direction with the weakest signal strength, so that the maximum radiation direction of the main lobe of the array element is consistent with the direction with the weakest signal strength. By making the main lobe width more slender and improving the gain, the received signal width is sacrificed to ensure that the signal strength remains optimal, thereby improving the signal reception strength in the direction with the weakest signal strength, and then improving the overall signal reception strength of the array antenna, the automatic real-time optimization of the array antenna signal is realized, and the communication quality of the array antenna is guaranteed.

[0104] In the embodiment of the present invention, Figure 4 As shown above, Figure 1 The antenna receiving pattern adjustment and correction module 201 of the array antenna shown includes: a processor 901 and a memory 902, wherein the processor 901 and the memory 902 can be connected via a bus or other means. Figure 4 The example of connecting through bus is taken in the following.

[0105] The processor 901 may be a central processing unit (CPU). The processor 901 may also be other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, or a combination of the above chips.

[0106] The memory 902 is a non-transitory computer-readable storage medium that can be used to store non-transitory software programs, non-transitory computer executable programs and modules, such as program instructions / modules corresponding to the methods in the above method embodiments. The processor 901 executes various functional applications and data processing of the processor by running the non-transitory software programs, instructions and modules stored in the memory 902, that is, implementing the methods in the above method embodiments.

[0107] The memory 902 may include a program storage area and a data storage area, wherein the program storage area may store an operating system, an application required by at least one function; the data storage area may store data created by the processor 901, etc. In addition, the memory 902 may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one disk storage device, a flash memory device, or other non-volatile solid-state storage device. In some embodiments, the memory 902 may optionally include a memory remotely arranged relative to the processor 901, and these remote memories may be connected to the processor 901 via a network. Examples of the above-mentioned network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

[0108] One or more modules are stored in the memory 902 , and when executed by the processor 901 , the method in the above method embodiment is executed.

[0109] The specific details of the above-mentioned antenna reception pattern adjustment and correction module can be understood by referring to the corresponding related descriptions and effects in the above-mentioned method embodiment, and will not be repeated here.

[0110] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiments can be implemented by instructing the relevant hardware through a computer program, and the implemented program can be stored in a computer-readable storage medium, and when the program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, the storage medium can be a disk, an optical disk, a read-only memory (ROM), a random access memory (RAM), a flash memory, a hard disk drive (HDD) or a solid-state drive (SSD), etc.; the storage medium can also include a combination of the above-mentioned types of memory.

[0111] Although the embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations are all within the scope defined by the appended claims.

Claims

1. A signal optimization method for an array antenna, wherein the array antenna is composed of a plurality of array elements, characterized in that: The method comprises: Obtain the spatial signal strength distribution data of the target array antenna at the current position and the position of each array element; Based on the spatial signal strength distribution data, determining a first direction in which signal strength adjustment is required; Based on the positions of the respective array elements, determining a first array element closest to the first direction; reducing a main lobe width of a lobe pattern corresponding to the first array element so that a maximum radiation direction of a main lobe corresponding to the first array element is consistent with the first direction; The determining, based on the positions of the respective array elements, a first array element closest to the first direction comprises: Calculate the first distance between each array element and the first direction respectively; by treating each array element as a point and the first direction as a straight line, the shortest distance from the point to the straight line is calculated as the first distance; Sort the first distances corresponding to the array elements; Based on the sorting result, the array element with the smallest first distance is determined as the first array element.

2. The method according to claim 1, characterized in that The determining, based on the spatial signal strength distribution data, a first direction in which signal strength adjustment is required includes: Based on the spatial signal strength distribution data, determining a second direction with the weakest signal strength and a third direction with the strongest signal strength; The second direction and / or the third direction is determined as the first direction.

3. The method according to claim 1, characterized in that Before determining the first direction in which signal strength adjustment is required based on the spatial signal strength distribution data, the method further includes: Based on the spatial signal strength distribution data, determining whether the target array antenna meets the set communication requirements; When the target array antenna does not meet the set communication requirement, a first direction in which signal strength adjustment is required is determined based on the spatial signal strength distribution data.

4. The method according to claim 3, characterized in that Also includes: Reacquire the spatial signal strength distribution data of the target array antenna at the current position, and return to the step of determining whether the target array antenna meets the set communication requirements based on the spatial signal strength distribution data.

5. The method according to claim 3, characterized in that: The determining, based on the spatial signal strength distribution data, whether the target array antenna meets the set communication requirements includes: Calculating the current overall signal strength of the target array antenna based on the spatial signal strength distribution data; Based on the relationship between the current overall signal strength and the preset overall signal strength, it is determined whether the target array antenna meets the set communication requirement.

6. The method according to claim 5, characterized in that The determining, based on the spatial signal strength distribution data, whether the target array antenna meets the set communication requirements further includes: Obtaining a first overall signal strength corresponding to a previous optimization time period of the target array antenna at the current position; Calculate the average signal strength of the target array antenna and the signal strengths in different directions based on the spatial signal strength distribution data; Determine whether the current overall signal strength is lower than a first preset proportion of the first overall signal strength, or determine whether there is a signal strength in at least one direction lower than a second preset proportion of the average signal strength; When the current overall signal strength is lower than a first preset proportion of the first overall signal strength, or when the signal strength in at least one direction is lower than a second preset proportion of the average signal strength, it is determined that the target array antenna does not meet the set communication requirements.

7. A signal optimization device for an array antenna, wherein the array antenna is composed of a plurality of array elements, characterized in that: The device comprises: An acquisition module is used to obtain the spatial signal strength distribution data of the target array antenna at the current position and the position of each array element; A first processing module, configured to determine a first direction in which signal strength adjustment is required based on the spatial signal strength distribution data; A second processing module, configured to determine, based on positions of each array element, a first array element that is closest to the first direction; A third processing module is used to reduce the main lobe width of the lobe pattern corresponding to the first array element, so that the maximum radiation direction of the main lobe corresponding to the first array element is consistent with the first direction; The second processing module is further used for: Calculate the first distance between each array element and the first direction respectively; by treating each array element as a point and the first direction as a straight line, the shortest distance from the point to the straight line is calculated as the first distance; Sort the first distances corresponding to the array elements; Based on the sorting result, the array element with the smallest first distance is determined as the first array element.

8. An array antenna, characterized in that: include: Antenna receiving pattern adjustment and correction module and multiple array elements, among which, The antenna receiving pattern adjustment and correction module includes: a memory and a processor, the memory and the processor are communicatively connected to each other, the memory stores computer instructions, and the processor executes the method described in any one of claims 1 to 6 by executing the computer instructions.

9. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores computer instructions, and the computer instructions are used to enable the computer to execute the method according to any one of claims 1 to 6.

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