Receive beam resource pool beam synthesis method and device

Abstract

The present invention provides a method and apparatus for beamforming of a receiving beam resource pool, belonging to the field of receiving beamforming. The beam resource pool management module periodically sends the pointing information of the managed receiving beams to the subarray resource management module. The subarray resource management module adaptively schedules the subarrays according to the pointing information of each receiving beam and updates the subarray set, synthesizes the subarray beams based on the updated subarray set, and performs time delay compensation on each subarray beam. The receiving beam in the specified direction is synthesized based on the compensated subarray beams; the compensation value for performing time delay compensation on each subarray beam is -Δτ k : #imgabs0# To maximize the receiving aperture efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of beam synthesis in a receiving phased array system, and particularly to a method and device for beam synthesis of a receiving beam resource pool. Background Art

[0002] The phased array system can adopt a planar configuration or a multi-panel configuration. The multi-panel configuration covers different airspaces with different panels, thereby expanding the beam coverage range of the phased array. The phased array can also adopt a conformal design configuration with various carrier platforms. Based on the multi-panel configuration or the phased array system with conformal design with the carrier platform, different sub-arrays are scheduled to complete beam synthesis according to the change of the beam direction.

[0003] Currently, large phased array systems generally adopt a modular design method, which improves the standardization and versatility of the design. By dividing a large array surface into multiple standardized sub-arrays, it is not only possible to adapt to the array surface requirements of different sizes, but also significantly improve the flexibility and versatility of the system. In addition, the standardized sub-array module is conducive to realizing batch production, thereby reducing production and manufacturing costs. The modular design also makes maintenance and repair more convenient. When a fault occurs, only the corresponding module needs to be replaced, without affecting the operation of the entire system.

[0004] For large phased arrays, standardized and modular sub-arrays constitute a sub-array resource pool. To make full use of the flexibility of a multi-panel or conformal phased array system based on multiple sub-arrays and maximize the receiving aperture efficiency, the key lies in how to schedule and allocate the sub-arrays in the sub-array resource pool to synthesize receiving beams. Summary of the Invention

[0005] The technical problem to be solved by the present invention is how to achieve efficient scheduling of sub-array resources and maximize the receiving aperture efficiency.

[0006] The present invention solves the above technical problem through the following technical solutions: a method for beam synthesis of a receiving beam resource pool, wherein a beam resource pool management module periodically sends the pointing information of the managed receiving beams to a sub-array resource management module, and the sub-array resource management module adaptively schedules sub-arrays according to the pointing information of each receiving beam and updates the sub-array set, synthesizes a sub-array beam based on the updated sub-array set, performs time delay compensation on each sub-array beam, and synthesizes a receiving beam in a specified direction based on the compensated sub-array beams;

[0007] The compensation value for performing time delay compensation on each sub-array beam is -Δτ k :

[0008] Wherein, is the origin O of the sub-array coordinate system O k -XYZ of the k-th sub-array in the updated sub-array setk Coordinates in the array coordinate system O-XYZ are the coordinates of the geometric center of the updated sub-array set is the direction vector of the i-th receiving beam, and c is the speed of light

[0009] Preferably, the process of the sub-array resource management module adaptively scheduling sub-arrays and updating the sub-array set according to the pointing information of each receiving beam includes

[0010] Step 1: Calculate the direction vector of the receiving beam Beam i (t) according to its pointing information Calculate the direction vector of the receiving beam Beam i (t)

[0011]

[0012] Step 2: Calculate the inner product of the normal vector of sub-array m and the direction vector of the receiving beam Beam i (t), and calculate the sub-array attenuation factor η according to the inner product. The calculation method of the sub-array attenuation factor η m is as follows m :

[0013]

[0014] where When η m is less than or equal to the set threshold, delete sub-array m from the sub-array set S i (t); otherwise, put sub-array m into or keep it in the sub-array set S i (t) to obtain the updated sub-array set S i (t)

[0015] Preferably, the calculation formula for the inner product of the normal vector of sub-array m and the direction vector of the receiving beam Beam i (t) is :

[0016] where is the unit vector in the normal direction of sub-array m

[0017] Preferably, the set threshold is 0, that is, when the sub-array attenuation factor η m >0 of sub-array m, then put sub-array m into the sub-array set S i (t), that is, sub-array m participates in the formation of the receiving beam Beam i (t) at time t

[0018] Preferably, the process of synthesizing the sub-array beam based on the updated sub-array set includes:

[0019] 1.1. Calculate the coordinates (x′ k , y′ k,n , z′ k,n ) of each antenna element in the k-th sub-array in the sub-array coordinate system O k,n -XYZ:

[0020] where (x k,n , y k,n , z k,n ) are the coordinates of the antenna element in the k-th sub-array in the array coordinate system O-XYZ, 1 ≤ n ≤ N k , N k is the number of antenna elements in the k-th sub-array, and K is the number of sub-arrays in the updated sub-array set S i (t).

[0021] 1.2. Obtain the coordinate matrix of the k-th sub-array in the sub-array coordinate system O k -XYZ as:

[0022]

[0023] 1.3. Calculate the weighted vector of the k-th sub-array and form the sub-array beam Beam i (t, k) based on this weighted vector.

[0024] Preferably, the calculation method of the coordinates of the geometric center of the updated sub-array set is:

[0025] where K is the number of sub-arrays in the sub-array set S i (t).

[0026] Preferably, the compensated sub-array beam is Beam i (t - Δτ k , k), and the calculation method of synthesizing the received beam Beam i (t) in a specified direction based on the compensated sub-array beam is:

[0027] where η k is the sub-array attenuation factor of sub-array k.

[0028] The present invention also provides a received beam resource pool beam synthesis device, including:

[0029] A beam resource pool management module for periodically sending the pointing information of the managed received beam;

[0030] The sub - array resource management module is used to adaptively schedule sub - arrays according to the pointing information of each receiving beam, update the sub - array set, synthesize sub - array beams based on the updated sub - array set, perform time - delay compensation on each sub - array beam, and synthesize a receiving beam in a specified direction based on the compensated sub - array beams;

[0031] The compensation value for performing time - delay compensation on each sub - array beam is - Δτ k :

[0032] is the origin O of the sub - array coordinate system O - XYZ of the k - th sub - array in the updated sub - array set k in the array - plane coordinate system O - XYZ, k and is the coordinate of the geometric center of the updated sub - array set, is the coordinate of the geometric center of the updated sub - array set, is the direction vector of the i - th receiving beam, and c is the speed of light.

[0033] Preferably, the process by which the sub - array resource management module adaptively schedules sub - arrays according to the pointing information of each receiving beam and updates the sub - array set includes:

[0034] Step 1: Calculate the direction vector of the receiving beam Beam i (t) according to its pointing information Calculate the direction vector of the receiving beam Beam i (t)

[0035]

[0036] Step 2: Calculate the inner product of the normal vector of sub - array m and the direction vector of the receiving beam Beam i (t), and calculate the sub - array attenuation factor η based on the inner product. The calculation method of the sub - array attenuation factor η m is as follows: m The calculation method of the sub - array attenuation factor η

[0037]

[0038] where When η m is less than or equal to the set threshold, delete sub - array m from the sub - array set S i (t); otherwise, put sub - array m into or keep it in the sub - array set S i (t) to obtain the updated sub - array set S i (t).

[0039] Preferably, the normal vector of sub - array m and the receiving beam Beam i(t) direction vector The calculation formula for the inner product is:

[0040] where, is the unit vector in the normal direction of sub-array m,

[0041] Preferably, the set threshold is 0, that is, when the sub-array attenuation factor η of sub-array m m > 0, then sub-array m is put into the sub-array set S i (t), that is, sub-array m participates in the formation of the receiving beam Beam i (t).

[0042] Preferably, the process of synthesizing the sub-array beam based on the updated sub-array set includes:

[0043] 1.1 Calculate the coordinates (x′ k , y′ k,n , z′ k,n ) of each antenna element in the k-th sub-array in the sub-array coordinate system O k,n -XYZ:

[0044] where, (x k,n , y k,n , z k,n ) are the coordinates of the antenna element in the k-th sub-array in the array plane coordinate system O-XYZ, 1 ≤ n ≤ N k , N k is the number of antenna elements in the k-th sub-array, K is the number of sub-arrays in the updated sub-array set S i (t),

[0045] 1.2 Obtain the coordinate matrix of the k-th sub-array in the sub-array coordinate system O k -XYZ as:

[0046]

[0047] 1.3 Calculate the weighted vector of the k-th sub-array and form the sub-array beam Beam i (t, k) based on this weighted vector.

[0048] Preferably, the compensated sub-array beam is Beam i (t - Δτ k , k), and the calculation method for synthesizing the receiving beam Beam i (t) in a specified direction based on the compensated sub-array beam is:

[0049] where ηk is the subarray attenuation factor of subarray k.

[0050] The advantages provided by the present invention are as follows:

[0051] According to the receiving beam direction, the present invention realizes the optimal scheduling of receiving subarray resources, which can maximize the gain of the receiving beam. For a non-planar receiving phased array composed of multiple subarrays, when beamforming, the time delay differences introduced by different phase centers between different subarrays and the time delay differences introduced by the different phase centers between the subarray and the system phase center are estimated and compensated. By making full use of the flexibility of the multi-faceted or conformal phased array system based on multiple subarrays, the receiving aperture efficiency is maximized, and flexible subarray resource scheduling, subarray and system time delay compensation, and beamforming of multiple subarrays can be realized for the non-planar receiving phased array system.

[0052] Meanwhile, the introduction of the subarray attenuation factor can maximize the spatial coverage ability of the conformal array and reduce the influence of the phase center change of the multi-faceted array on beamforming. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] Figure 1 Schematic diagram of the definition of the phased array plane coordinate system for the beamforming method of the receiving beam resource pool provided in the embodiment of the present invention;

[0054] Figure 2 Schematic diagram of the working process of the beam resource pool management module and the subarray resource management module in the beamforming method of the receiving beam resource pool provided in the embodiment of the present invention;

[0055] Figure 3 Schematic diagram of the system coordinate system taking a two-faceted array as an example for the beamforming method and device of the receiving beam resource pool provided in the embodiment of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0056] To make the objectives, technical solutions, and advantages of the present invention clearer and more understandable, the following combines specific embodiments and refers to the accompanying drawings to clearly and completely describe the technical solutions of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art without creative efforts based on the embodiments of the present invention belong to the scope of protection of the present invention.

[0057] Embodiment 1

[0058] As Figure 2As shown in the figure, this embodiment provides a beamforming method for a receiving beam resource pool. The beam resource pool management module periodically sends the pointing information of the managed receiving beams to the sub-array resource management module. The sub-array resource management module adaptively schedules the sub-arrays according to the pointing information of each receiving beam and updates the sub-array set, synthesizes the sub-array beams based on the updated sub-array set, and performs time delay compensation on each sub-array beam. Based on the compensated sub-array beams, a receiving beam in a specified direction is synthesized;

[0059] The compensation value for time delay compensation of each sub-array beam is -Δτ k :

[0060] Wherein, is the origin O of the sub-array coordinate system O m -XYZ of the k-th sub-array in the updated sub-array set m The coordinate in the array plane coordinate system O-XYZ, is the coordinate of the geometric center of the updated sub-array set, is the direction vector of the i-th receiving beam, and c is the speed of light.

[0061] The beam resource pool management module manages I receiving beams at time t. The i-th receiving beam is denoted as Beam i (t), i ∈ [1, I], I represents the total number of receiving beams, and sends the pointing information of the receiving beam Beam i (t) to the sub-array resource management module with a period of time T

[0062] The sub-array resource management module manages M sub-arrays of the receiving phased array system. Sub-array m contains N m antenna elements, 1 ≤ m ≤ M. A unified array plane coordinate system O-XYZ is established for the entire array plane. The origin of the array plane coordinate system O-XYZ is O. The N m antenna elements of sub-array m are in the array plane coordinate system O-XYZ with coordinates (x m,n , y m,n , z m,n ), 1 ≤ n ≤ N m , and a sub-array coordinate system O m -XYZ is established for sub-array m. The origin of the sub-array coordinate system O m -XYZ is O m , and the origin O m The coordinate in the array plane coordinate system O-XYZ is

[0063]

[0064] The array plane coordinate system O-XYZ and the sub-array coordinate system O m- There is a translational relationship among X, Y, and Z, as Figure 1 shown, the unit vector along the normal direction of sub-array m is

[0065] The sub-array resource management module forms the receiving beam Beam i (t) of the sub-array set S i (t). The process by which the sub-array resource management module adaptively schedules sub-arrays according to the pointing information of each receiving beam and updates the sub-array set includes:

[0066] Step 1: Calculate the direction vector of the receiving beam Beam i (t) according to the pointing information of the receiving beam Beam i (t).

[0067]

[0068] Step 2: Calculate the inner product of the normal vector of sub-array m and the direction vector of the receiving beam Beam i (t), and calculate the sub-array attenuation factor η according to the inner product. The calculation method of η m is as follows: m

[0069]

[0070] where When η m is less than or equal to the set threshold, delete sub-array m from the set S i (t); otherwise, put sub-array m into or leave it in the sub-array set S i (t) to obtain the updated sub-array set S i (t).

[0071] In Step 2, the calculation formula for the inner product of the normal vector of sub-array m and the direction vector of the receiving beam Beam i (t) is:

[0072] where is the unit vector along the normal direction of sub-array m,

[0073] The set threshold is 0, that is, when the sub-array attenuation factor η m of sub-array m > 0, then put sub-array m into the sub-array set S i (t), that is, sub-array m participates in the formation of the receiving beam Beam i (t) at time t.

[0074] ​​The process of synthesizing the subarray beam based on the updated subarray set includes:

[0075] 1.1. The subarray resource management module schedules the K subarrays in the updated subarray set S i (t), and calculates the coordinates (x′ k , y′ k,n , z′ k,n ) of each antenna element in the k-th subarray in the subarray coordinate system O k,n -XYZ:

[0076] where (x k,n , y k,n , z k,n ) are the coordinates of the antenna element in the k-th subarray in the array coordinate system O-XYZ, 1 ≤ n ≤ N k , N k is the number of antenna elements in the k-th subarray, 1 ≤ k ≤ K,

[0077] 1.2. Obtain the coordinate matrix of the k-th subarray in the subarray coordinate system O k -XYZ as:

[0078]

[0079] 1.3. Calculate the weighted vector of the k-th subarray and form the subarray beam Beam i (t, k) based on this weighted vector.

[0080] The subarray resource management module calculates the geometric center of the updated subarray set S i (t) calculates the time delay difference Δτ of the k-th subarray relative to the geometric center k , and performs time delay compensation on the subarray beam Beam i (t, k) formed by the k-th subarray to obtain the compensated subarray beam Beam i (t - Δτ k , k). The subarray resource management module completes the synthesis of the receiving beam Beam i (t) based on the updated subarray set S i (t).

[0081] where the calculation method of the geometric center of the updated subarray set S i (t) is:

[0082] where K is the number of subarrays in the subarray set S i (t).

[0083] Received beam Beam i (t) is calculated by the following formula:

[0084] where η k is the sub-array attenuation factor of sub-array k.

[0085] At time t+T, where T is the received beam update period, the beam resource pool management module updates the pointing information of the i-th received beam Beam i (t) as and sends the pointing information to the sub-array resource management module, which updates the sub-array set to S i (t+T), calculates the time delay difference introduced with respect to the origin O of the global coordinate system due to the change of the sub-array set S i (t+T) relative to the sub-array set S i (t), and compensates for the time delay of the received beam Beam i (t+T) until the synthesis of all received beams in the beam resource management module is completed.

[0086] Sub-array set S i (t+T) relative to the sub-array set S i (t) introduces a time delay difference Δτ with respect to the origin O of the global coordinate system i (t+T) is calculated by the following formula:

[0087]

[0088] where is the geometric center of the sub-array set S i (t+T) c is the speed of light.

[0089] The present invention realizes the optimal scheduling of received sub-array resources according to the received beam pointing, can maximize the gain of the received beam, estimates and compensates for the time delay differences introduced by different phase centers between different sub-arrays and the time delay differences introduced by the different phase centers of the sub-arrays and the system phase center during beam synthesis for a non-planar receiving phased array composed of multiple sub-arrays, makes full use of the flexibility of the multi-faceted or conformal phased array system based on multiple sub-arrays, realizes the maximization of the receiving aperture efficiency, and can achieve flexible sub-array resource scheduling, sub-array and system time delay compensation, and beam synthesis of multiple sub-arrays for a non-planar receiving phased array system.

[0090] Embodiment 2

[0091] This embodiment provides a beam synthesis device for a received beam resource pool, including:

[0092] The beam resource pool management module is used to periodically send the pointing information of the managed receiving beams;

[0093] The subarray resource management module is used to adaptively schedule the subarrays according to the pointing information of each receiving beam, update the subarray set, synthesize the subarray beam based on the updated subarray set, and perform time delay compensation on each subarray beam. Based on the compensated subarray beams, the receiving beam in the specified direction is synthesized; the compensation value for performing time delay compensation on each subarray beam is -Δτ k ,

[0094] is the origin O of the subarray coordinate system O-XYZ of the k-th subarray in the updated subarray set k in the array coordinate system O-XYZ k coordinate, is the coordinate of the geometric center of the updated subarray set, is the direction vector of the i-th receiving beam, and c is the speed of light.

[0095] The beam resource pool management module manages I receiving beams at time t. The i-th receiving beam is denoted as Beam i (t), i ∈ [1, I], where I represents the total number of receiving beams, and sends the pointing information of the receiving beam Beam i (t) to the subarray resource management module with a period of time T

[0096] The subarray resource management module manages M subarrays of the receiving phased array system. Subarray m contains N m antenna elements, 1 ≤ m ≤ M. A unified array coordinate system O-XYZ is established for the entire array surface. The origin of the array coordinate system O-XYZ is O. The N m antenna elements of subarray m have coordinates (x m,n , y m,n , z m,n ) in the array coordinate system O-XYZ, 1 ≤ n ≤ N m , and a subarray coordinate system O m -XYZ is established for subarray m. The origin of the subarray coordinate system O m -XYZ is O m , and the origin O m has coordinates in the array coordinate system O-XYZ as

[0097]

[0098] There is a translation relationship between the array coordinate system O-XYZ and the subarray coordinate system O m -XYZ, such as Figure 1As shown, the unit vector along the normal direction of sub-array m is

[0099] The sub-array resource management module forms the receiving beam Beam i (t) of the sub-array set S i (t). The process by which the sub-array resource management module adaptively schedules sub-arrays according to the pointing information of each receiving beam and updates the sub-array set includes:

[0100] Step 1: Calculate the direction vector of the receiving beam Beam i (t) according to the pointing information of the receiving beam Beam i (t).

[0101]

[0102] Step 2: Calculate the inner product of the normal vector of sub-array m and the direction vector of the receiving beam Beam i (t), and calculate the sub-array attenuation factor η according to the inner product. The calculation method of η m , η m is as follows:

[0103]

[0104] where when η m is less than or equal to the set threshold, delete sub-array m from the sub-array set S i (t); otherwise, put sub-array m into or leave it in the sub-array set S i (t) to obtain the updated sub-array set S i (t).

[0105] In Step 2, the calculation formula for the inner product of the direction vector of sub-array m and the receiving beam Beam i (t) is:

[0106] where is the unit vector in the normal direction of sub-array m,

[0107] The set threshold is 0, that is, when the sub-array attenuation factor η m of sub-array m > 0, then put sub-array m into the sub-array set S i (t), that is, sub-array m participates in the formation of the receiving beam Beam i (t) at time t.

[0108] The process of synthesizing the sub-array beam based on the updated sub-array set includes:​

[0109] 1.1. The sub-array resource management module schedules the updated sub-array set S i The K sub-arrays in (t), and calculate the coordinates (x′ k , y′ k,n , z′ k,n ) of each antenna element in the k-th sub-array in the sub-array coordinate system O k,n -XYZ:

[0110] where (x k,n , y k,n , z k,n ) are the coordinates of the antenna element in the k-th sub-array in the array plane coordinate system O-XYZ, 1 ≤ n ≤ N k , N m is the number of antenna elements in the k-th sub-array, 1 ≤ k ≤ K,

[0111] 1.2. Obtain the coordinate matrix of the k-th sub-array in the sub-array coordinate system O k -XYZ as:

[0112]

[0113] 1.3. Calculate the weighted vector of the k-th sub-array and form the sub-array beam Beam i (t, k) based on this weighted vector.

[0114] The sub-array resource management module calculates the geometric center of the updated sub-array set S i (t) Calculate the time delay difference Δτ of the k-th sub-array relative to the geometric center k , and perform time delay compensation on the sub-array beam Beam i (t, k) formed by the k-th sub-array to obtain the compensated sub-array beam Beam i (t - Δτ k , k), and the sub-array resource management module completes the synthesis of the receiving beam Beam i (t) based on the updated sub-array set S i (t).

[0115] where the calculation method of the geometric center of the updated sub-array set S i (t) is:

[0116] where K is the number of sub-arrays in the sub-array set S i (t).

[0117] Receiving beam Beam​i (t) is calculated by the following formula:

[0118] where η k is the sub-array attenuation factor of sub-array k.

[0119] At time t+T, the beam resource pool management module updates the pointing information of the i-th receiving beam Beam i (t) as and sends the pointing information to the sub-array resource management module. The sub-array resource management module updates the sub-array set to S i (t+T), calculates the time delay difference Δτ introduced with respect to the origin O of the global coordinate system due to the change of the sub-array set S i (t+T) relative to the sub-array set S i (t), and performs time delay compensation on the receiving beam Beam i (t+T) until the synthesis of all receiving beams in the beam resource management module is completed.

[0120] The sub-array set S i (t+T) relative to the sub-array set S i (t) introduces a time delay difference Δτ with respect to the origin O of the global coordinate system. The calculation formula of Δτ i (t+T) is as follows:

[0121]

[0122] where is the geometric center of the sub-array set S i (t+T) c is the speed of light.

[0123] Embodiment 3

[0124] This embodiment introduces the receiving beam resource pool beam synthesis method and device of the present invention by taking a two-array as an example:

[0125] As Figure 1 shown, a receiving phased array system consists of 2 planes, each plane is composed of four sub-arrays. Among them, sub-arrays 1, 2, 5, and 6 are coplanar, sub-arrays 3, 4, 7, and 8 are coplanar, and the included angle between the two planes is 150°. Each sub-array contains 16 antenna elements. The positions of the antenna elements in the coordinate system O-XYZ are as Figure 3 shown. The definitions of the incident angles of the beam are: θ is the included angle between the incident direction and the XOZ plane, with the positive semi-axis of the Y-axis being the positive angle, is the included angle between the projection of the incident direction on the XOZ plane and the positive semi-axis of the Z-axis, with the positive semi-axis of the X-axis being the positive angle. It should be noted that the incident angles of the beam here The definition is only for illustration and is not unique, and cannot be used as a limitation to the present invention.

[0126] The pointing information of the receiving beam is the incident angle The direction vector of the receiving beam is:

[0127]

[0128] At time t, the incident angle of the receiving beam Beam i (t) is (0°, 15°), then the direction vector of the receiving beam Beam i (t) is:

[0129]

[0130] At this time, the included angles between the beam direction and the two array surfaces are both 15°. Therefore, for all sub-arrays k, there is Therefore, for all sub-arrays, there is η k = 1, then the sub-array set S i (t) = {sub-array 1, sub-array 2,..., sub-array 8}.

[0131] Each sub-array forms a sub-array beam Beam i (t, k), where 1 ≤ k ≤ 8. Calculate the geometric center O of each sub-array in the sub-array set S i (t) k and the geometric center of the sub-array set S i (t) Obtain:

[0132] O 1 = {0.0001, 2.9120, 2.0800} m

[0133] O 2 = {-0.2720, 2.9120, 2.0800} m

[0134] O 3 = {-0.6031, 2.9120, 1.9911} m

[0135] O 4 = {-0.8374, 2.9120, 1.8551} m

[0136] O 5 = {0.0001, 2.6160, 2.0800} m

[0137] O 6 = {-0.2720, 2.6160, 2.0800} m

[0138] O 7={-0.6031, 2.6160, 1.9911} m

[0139] O 8 ={-0.8374, 2.6160, 1.8551} m

[0140]

[0141] Assume that the operating wavelength of the phased array is 13.33 cm, then the time delay difference Δτ of sub - array k relative to is respectively: {0.6221, 0.3873, -0.1846, -0.8248, 0.6221, 0.3873, -0.1846, -0.8248} ns. Compensating the above - mentioned time delays for beams 1 - 8 respectively can synthesize beam Beam k (t). i (t).

[0142] The above - mentioned embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A receive beam resource pool beam synthesis method, characterized in that: The beam resource pool management module periodically sends the directional information of the managed receiving beam to the subarray resource management module. The subarray resource management module calculates the direction vector of the receiving beam according to the directional information of the receiving beam, calculates the inner product of the normal vector of the subarray and the direction vector of the receiving beam, calculates the subarray attenuation factor according to the inner product, obtains an updated subarray set, synthesizes the subarray beam based on the updated subarray set, performs time delay compensation on each subarray beam, and synthesizes the receiving beam in the specified direction based on the compensated subarray beam; The compensation value for delay compensation of each subarray beam is : ,in, is the updated sub-array set k Subarray Coordinate System Origin In the front coordinate system The coordinates below, is the coordinate of the geometric center of the updated sub-matrix set, For the i The direction vector of the receive beam, c The speed of light.

2. The receive beam resource pool beam synthesis method according to claim 1, characterized in that: According to the receiving beam Direction information ( , calculate the receive beam Direction vector : ； Pointing information ( middle For the The receiving beam is at time The incident direction and XOZ The angle between the faces, Y The positive half axis is a positive angle. For the The receiving beam is at time The incident direction is XOZ Surface projection and Z The angle between the positive half axis and the X The positive semi-axis is a positive angle; Calculation subarray m The normal vector and the receiving beam Direction vector The inner product of , subarray attenuation factor The calculation method is as follows: in , For subarray m The unit vector in the normal direction, when the sub-array attenuation factor When the subarray is less than or equal to the set threshold, From the collection Otherwise, the subarray m Put into or leave in subarray set , get the updated sub-array set .

3. The receive beam resource pool beam synthesis method according to claim 2, characterized in that: Subarray m The normal vector and the receiving beam Direction vector The inner product of is calculated as: ， 。 4. The receive beam resource pool beam synthesis method according to claim 2 or 3, characterized in that: The threshold is set to 0, that is, when the subarray m The subarray attenuation factor When Add to subarray collection , that is, the sub-matrix At the moment Participating in receive beam formation.

5. The receive beam resource pool beam synthesis method according to claim 1, characterized in that: The process of synthesizing the subarray beam based on the updated subarray set includes: 1.1、Calculate k Each antenna unit in the subarray is in the subarray coordinate system The coordinates below : = ,in, For the k The antenna units in the sub-array are located in the array coordinate system The coordinates below, , For the k The number of antenna elements in a subarray, , K is the updated sub-array set The number of neutron arrays, ; 1.2、Get the k Subarrays in the Subarray Coordinate System The coordinate matrix is: ； 1.3、Calculate k The weight vector of the sub-matrix , and form a subarray beam based on the weighted vector .

6. The receive beam resource pool beam synthesis method according to claim 1, characterized in that: The coordinates of the geometric center of the updated sub-array set The calculation method is: ,in, K For the subarray set The number of subarrays in .

7. The receive beam resource pool beam synthesis method according to claim 1, characterized in that: The compensated subarray beam is , based on the compensated sub-array beam synthesis, the receiving beam in the specified direction is The calculation method is: ,in For subarray The subarray attenuation factor.

8. A receiving beam resource pool beam synthesis device, characterized in that: include: A beam resource pool management module, used for periodically sending the directional information of the managed receiving beam; A subarray resource management module is used to calculate the direction vector of the receiving beam according to the pointing information of the receiving beam, calculate the inner product of the normal vector of the subarray and the direction vector of the receiving beam, calculate the subarray attenuation factor according to the inner product, obtain an updated subarray set, synthesize the subarray beam based on the updated subarray set, perform time delay compensation on each subarray beam, and synthesize the receiving beam in the specified direction based on the compensated subarray beam; The compensation value for delay compensation of each subarray beam is : , is the updated sub-array set k Subarray Coordinate System Origin In the front coordinate system The coordinates below, is the coordinate of the geometric center of the updated sub-matrix set, For the i The direction vector of the receive beam, c The speed of light.

9. The receive beam resource pool beam synthesis device according to claim 8, characterized in that: According to the receiving beam Direction information ( , calculate the receive beam Direction vector : ； Pointing information ( middle For the The receiving beam is at time The incident direction and XOZ The angle between the faces, Y The positive half axis is a positive angle. For the The receiving beam is at time The incident direction is XOZ Surface projection and Z The angle between the positive half axis and the X The positive semi-axis is a positive angle; Calculation subarray m Normal vector and receive beam Direction vector The inner product of m Attenuation Factor , subarray attenuation factor The calculation method is as follows: in , For subarray m The unit vector in the normal direction, when the sub-matrix m Attenuation Factor When the subarray is less than or equal to the set threshold, From the subarray collection Otherwise, the subarray m Put into or leave in subarray set , get the updated sub-array set .

10. The receive beam resource pool beam synthesis device according to claim 9, characterized in that: Subarray m The normal vector and the receiving beam Direction vector The inner product of is calculated as: ， 。

Images