Method and device for determining beam parameters

Abstract

The embodiment of the invention provides a method and a device for determining beam parameters, which are suitable for a process of communicating with a target object through a phased-array antenna, and the method comprises the following steps: obtaining a target direction and a null direction of the phased-array antenna for the target object; inputting the target direction and the null direction into a simulation model of the phased-array antenna to obtain a first response vector and a second response vector; the first response vector is used for representing a response characteristic of the phased-array antenna to an incident signal in a target direction; the second response vector is used for representing the response characteristic of the phased-array antenna to the incident signal in the null direction; determining beam parameters of the phased-array antenna according to the first response vector and the second response vector; the beam parameter is used for forming null in the null direction by the beam formed by the phased-array antenna. Therefore, in an analog domain, the wave beam of the phased-array antenna realizes null-null in the null-null direction, and a high-gain wave beam is generated in the target direction.

Description

Technical Field

[0001] The present invention relates to the technical field of phased array antennas, and in particular, to a method and device for determining beam parameters. Background Art

[0002] With the development of 5G and 6G communication technologies, phased array antennas are gradually expanding to millimeter-wave and terahertz frequency bands to meet the requirements of high-speed and high-capacity communications. In the beamforming algorithm of phased array antennas, precise nulls can be generated in a specified direction to achieve sidelobe suppression while ensuring high beam gain in the direction of the target satellite.

[0003] Generally speaking, the formation of nulls by antennas is achieved in the digital domain. Specifically, by receiving the signal data of the receiving antennas and processing the signal data, nulls can be realized. However, this method relies on digital sampling (analog-to-digital converters, ADC), so each array element needs to be equipped with a complete set of down-conversion RF channels and analog-to-digital conversion chips, resulting in high manufacturing costs and high power consumption.

[0004] In summary, how to form nulls in the analog domain while achieving high-gain beam pointing by antennas, and reducing manufacturing costs and power consumption, is a technical problem that needs to be solved urgently at present. Summary of the Invention

[0005] Embodiments of the present invention provide a method and device for determining beam parameters to solve the problems of high manufacturing costs and high power consumption in the process of realizing antenna nulls in the prior art.

[0006] In a first aspect, an embodiment of the present invention provides a method for determining beam parameters, which is applicable to the process of communicating with a target object through a phased array antenna. The method includes: obtaining the target direction and null direction of the phased array antenna for the target object; inputting the target direction and null direction into the simulation model of the phased array antenna to obtain a first response vector and a second response vector; the first response vector is used to characterize the response characteristics of the phased array antenna to the incident signal in the target direction; the second response vector is used to characterize the response characteristics of the phased array antenna to the incident signal in the null direction; determining the beam parameters of the phased array antenna according to the first response vector and the second response vector; the beam parameters are used for the beam formed by the phased array antenna to form a null in the null direction.

[0007] In the above technical solution, by using the relatively real first response vector and second response vector, the beam parameters of the phased array antenna can be determined more accurately, so as to realize that in the analog domain, the phased array antenna forms a null in the null direction and achieves high gain in the target direction.

[0008] Optionally, based on the first response vector and the second response vector, beam parameters of the phased array antenna are determined, including: constructing interference intensity information according to the second response vector and the null factor coefficient; the null factor coefficient characterizes the null depth and is used to increase the influence of the second response vector on the interference intensity information; determining the beam parameters of the phased array antenna according to the first response vector and the interference intensity information.

[0009] Optionally, constructing interference intensity information according to the second response vector and the null factor coefficient includes: constructing the interference intensity information through formula (1)

[0010]

[0011] where R x is the interference intensity information, is the thermal noise power, λ is the null factor coefficient, is the conjugate transpose of S i and S i is the second response vector, I M is the M-order identity matrix, and M is the number of array elements of the phased array antenna.

[0012] Optionally, the null factor coefficient is set with the goal of being higher than the thermal noise power.

[0013] Optionally, determining the beam parameters of the phased array antenna according to the first response vector and the interference intensity information includes: determining the beam parameters of the phased array antenna through formula (2)

[0014]

[0015] where w is the beam parameter, is the inverse matrix of R x and R x is the interference intensity information, is the conjugate transpose of S0, and S0 is the first response vector.

[0016] Optionally, after determining the beam parameters of the phased array antenna, it further includes: obtaining the initial amplitude and initial phase of each antenna element in the phased array antenna; adjusting the initial amplitude based on the amplitude weight information in the beam parameters to obtain the target amplitude of each antenna element; adjusting the initial phase based on the phase weight information in the beam parameters to obtain the target phase of each antenna element; forming the beam of the phased array antenna through the target amplitude of each antenna element and the target phase of each antenna element.

[0017] In a second aspect, an embodiment of the present invention provides a device for determining beam parameters, which is applicable to the process of communicating with a target object through a phased array antenna. The device includes:

[0018] An acquisition unit for acquiring the target direction and the null direction of the phased array antenna with respect to a target object; a processing unit for inputting the target direction and the null direction into a simulation model of the phased array antenna to obtain a first response vector and a second response vector; the first response vector is used to characterize the response characteristics of the phased array antenna to the incident signal in the target direction; the second response vector is used to characterize the response characteristics of the phased array antenna to the incident signal in the null direction; determining the beam parameters of the phased array antenna according to the first response vector and the second response vector; the beam parameters are used for the beam formed by the phased array antenna to form a null in the null direction.

[0019] Optionally, the processing unit is specifically configured to: construct interference intensity information according to the second response vector and the null factor coefficient; the null factor coefficient characterizes the null depth and is used to increase the influence of the second response vector on the interference intensity information; determine the beam parameters of the phased array antenna according to the first response vector and the interference intensity information.

[0020] Optionally, the processing unit is specifically configured to: construct interference intensity information through formula (1)

[0021]

[0022] where R x is the interference intensity information, is the thermal noise power, λ is the null factor coefficient, is the conjugate transpose of S i S i is the second response vector, I M is the M - order identity matrix, and M is the number of array elements of the phased array antenna.

[0023] Optionally, the null factor coefficient is set with the goal of being higher than the thermal noise power.

[0024] Optionally, the processing unit is specifically configured to: determine the beam parameters of the phased array antenna through formula (2)

[0025]

[0026] where w is the beam parameter, is the inverse matrix of R x R x is the interference intensity information, is the conjugate transpose of S0, and S0 is the first response vector.

[0027] Optionally, the processing unit is further configured to: obtain the initial amplitude and initial phase of each antenna element in the phased array antenna; based on the amplitude weight information in the beam parameters, adjust the initial amplitude to obtain the target amplitude of each antenna element; based on the phase weight information in the beam parameters, adjust the initial phase to obtain the target phase of each antenna element; form the beam of the phased array antenna through the target amplitude of each antenna element and the target phase of each antenna element.

[0028] In a third aspect, an embodiment of the present invention further provides a computing device, including at least one processor and at least one memory. Among them, the memory stores a computer program, and when the program is executed by the processor, the processor is caused to execute the method for determining beam parameters in the first aspect above.

[0029] In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium, which stores a computer program executable by a computer device. When the program runs on the computer device, the computer device is caused to execute the method for determining beam parameters in the first aspect above.

[0030] In a fifth aspect, an embodiment of the present application provides a computer program product. The computer program product includes a computer program stored on a computer-readable storage medium. The computer program includes program instructions. When the program instructions are executed by a computer device, the computer device is caused to execute the steps of the method for arbitrarily determining beam parameters in the first aspect above. Description of the Drawings

[0031] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for description in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0032] Figure 1 It is a flowchart of a method for determining beam parameters provided by an embodiment of the present invention;

[0033] Figure 2 It is a flowchart of a method for determining beam parameters of a phased array antenna provided by an embodiment of the present invention;

[0034] Figure 3 It is a flowchart of a method for forming a beam of a phased array antenna provided by an embodiment of the present invention;

[0035] Figure 4 It is an upper half-space direction pattern obtained by the MVDR algorithm and modeling and simulation provided by an embodiment of the present invention;

[0036] Figure 5A two-dimensional pattern of forming a beam by MVDR provided by an embodiment of the present invention;

[0037] Figure 6 A schematic structural diagram of a device for determining beam parameters provided by an embodiment of the present invention;

[0038] Figure 7 A schematic structural diagram of a computing device provided by an embodiment of the present invention. Detailed implementation manners

[0039] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0040] A phased array antenna is an antenna system that realizes beam scanning and directional radiation by electronically controlling the phase and amplitude of each radiation unit in the array. Compared with traditional mechanically scanned antennas, phased array antennas have significant advantages such as fast beam steering, high reliability, and versatility, and thus have been widely used in fields such as radar, communication, and electronic warfare.

[0041] The core principle of a phased array antenna is to adjust the phase difference of each radiation unit in the array so that the antenna beam forms coherent superposition in a specific direction and forms destructive interference in other directions.

[0042] Generally speaking, in the beamforming algorithm of a phased array antenna, when ensuring a high beam gain in the direction of the target satellite, generating a precise null in a specified direction can achieve sidelobe suppression, and this spatial null can also improve the anti-interference ability of satellite navigation receiver devices and enhance the normal operation ability in a complex electromagnetic environment. However, this null scheme can often only be implemented in the digital domain.

[0043] Specifically, to implement the null scheme in the digital domain, each element of the phased array antenna needs to be equipped with a complete set of down-conversion RF channels and analog-to-digital conversion chips, which will lead to a high manufacturing cost and high power consumption.

[0044] In summary, an embodiment of the present invention provides a method for determining beam parameters, enabling the phased array antenna to implement a null scheme in the analog domain, thereby reducing the manufacturing cost and power consumption.

[0045] As Figure 1 shown, a flowchart of a method for determining beam parameters provided by an embodiment of the present invention, the method includes the following steps:

[0046] Step 101: Obtain the target direction and null direction of the phased array antenna for the target object.

[0047] In the embodiments of the present invention, first, the target direction and the null direction are introduced. The target direction is the direction pointed by the main lobe of the phased array antenna beam, that is, the direction where the antenna radiates the strongest energy. The null direction is the direction where the radiation energy in the phased array antenna beam is suppressed, that is, the antenna forms a very low radiation intensity in this direction. By obtaining the target direction and the null direction of the phased array antenna for the target object, it is convenient to subsequently adjust the phase and amplitude of each antenna element of the phased array antenna to achieve high gain in the target direction and form a null in the null direction.

[0048] Step 102: Input the target direction and the null direction into the simulation model of the phased array antenna to obtain a first response vector and a second response vector.

[0049] In the embodiments of the present invention, the target direction and the null direction are input into the simulation model of the phased array antenna to obtain a first response vector and a second response vector. The first response vector is used to characterize the response characteristics of the phased array antenna to the incident signal in the target direction, and the second response vector is used to characterize the response characteristics of the phased array antenna to the incident signal in the null direction.

[0050] The first response vector is determined by the relative phase relationship and relative amplitude relationship received by each antenna element when the incident signal enters from the target direction. The second response vector is determined by the relative phase relationship and relative amplitude relationship received by each antenna element when the incident signal enters from the null direction.

[0051] Step 103: Determine the beam parameters of the phased array antenna according to the first response vector and the second response vector.

[0052] In the embodiments of the present invention, the beam parameters of the phased array antenna are determined according to the first response vector and the second response vector. The beam parameters are used to adjust the phase and amplitude of each antenna element in the phased array antenna, so as to realize that the beam formed by the phased array antenna forms a null in the null direction and achieves high gain in the target direction.

[0053] It can be seen from the above steps 101 to 103 that since the first response vector and the second response vector are obtained through the simulation model of the phased array antenna, the first response vector and the second response vector can truly characterize the relative amplitude relationship and relative phase relationship of each antenna element in the phased array antenna. According to the first response vector and the second response vector, the beam parameters of the phased array antenna can be determined more accurately and precisely, so that the phased array antenna can achieve a null in the analog domain.

[0054] In the embodiments of the present invention, among all beamforming methods, the conventional beamforming method has the strongest robustness, but the formed sidelobe suppression is limited. Although the sidelobe level can be greatly reduced by means of amplitude clipping, the gain in the main lobe direction will be sacrificed and the main lobe beamwidth will be broadened.

[0055] First, the spatial filtering technology of MVDR is introduced. This technology allows the signal in the direction of interest to pass through without distortion, and at the same time constrains the output noise variance of the zero beam to be minimized. If a virtual interference signal covariance matrix is constructed in the direction of non-target navigation satellites, that is, the ratio of the eigenvalues of the incident signals in the direction of non-target satellites to the eigenvalues in the direction of the target satellite signal is greatly increased, the condition of minimizing the beam output noise variance can be converted into a spatial null in the direction of non-target satellites.

[0056] However, the antenna model of the algorithm based on MVDR often uses ideal antenna elements, and it is defaulted that the responses of all elements in any direction are also exactly the same. This approximate processing method completely ignores factors such as the mutual coupling effect and edge effect between elements, and cannot match the real antenna model.

[0057] To solve the above problems, the present application performs a complete modeling according to the phased array antenna to obtain a simulation model of the phased array antenna. Through the simulation model of the phased array antenna, relatively real first and second response vectors can be obtained, which is convenient for subsequent determination of relatively accurate beam parameters based on the first and second response vectors. To facilitate the understanding of this solution, the following introduces how to determine the beam parameters of the phased array antenna specifically.

[0058] As Figure 2 shown, it is a flowchart of a method for determining the beam parameters of a phased array antenna provided by the embodiments of the present invention. The method includes the following steps:

[0059] Step 201, construct interference intensity information according to the second response vector and the null factor coefficient.

[0060] In the embodiments of the present invention, since in the analog domain, it is impossible to determine from which null direction the interference signal is emitted, therefore, this solution defaults that interference signals will be generated in all null directions. Therefore, the interference intensity information is constructed by the second response vector that characterizes the response characteristics of the phased array antenna to the incident signals in the null direction.

[0061] The interference intensity information is constructed according to the second response vector and the null factor coefficient through formula (1), as shown in formula (1):

[0062]

[0063] where R x is the interference intensity information, is the thermal noise power, and λ is the null factor coefficient. is S i 's conjugate transpose, and S i is the second response vector, and I M is the M - order identity matrix, where M is the number of array elements of the phased array antenna.

[0064] Optionally, the null factor coefficient is set with the goal of being higher than the thermal noise power, and the null factor coefficient characterizes the null depth. In this solution, by increasing the null factor coefficient, the influence of the second response vector on the interference intensity information is increased.

[0065] Step 202: Determine the beam parameters of the phased array antenna according to the first response vector and the interference intensity information.

[0066] In the embodiment of the present invention, the beam parameters of the phased array antenna are determined by formula (2)

[0067]

[0068] where w is the beam parameter, is the inverse matrix of R x and R x is the interference intensity information, is the conjugate transpose of S0, and S0 is the first response vector.

[0069] It can be seen from the above steps 201 to 202 that by increasing the null factor coefficient, the influence of the second response vector on the interference intensity information can be increased, facilitating the subsequent generated beam parameters to achieve a null in the null direction in the analog domain and generate a high - gain beam in the target direction.

[0070] As Figure 3 shown, it is a flowchart of a method for forming a beam of a phased array antenna provided by an embodiment of the present invention, and the method includes the following steps:

[0071] Step 301: Obtain the initial amplitude and initial phase of each antenna element in the phased array antenna.

[0072] In the embodiment of the present invention, the initial amplitude and initial phase of each antenna element in the phased array antenna are obtained from the simulation model of the phased array antenna.

[0073] Step 302: Based on the amplitude weight information in the beam parameters, adjust the initial amplitude to obtain the target amplitude of each antenna element.

[0074] In the embodiment of the present invention, the beam parameters include amplitude weight information and phase weight information. Based on the amplitude weight information in the beam parameters, the initial amplitude is adjusted by an attenuator to obtain the target amplitude of each antenna element.

[0075] Step 303: Based on the phase weight information in the beam parameters, adjust the initial phase to obtain the target phase of each antenna element.

[0076] In the embodiment of the present invention, based on the phase weight information in the beam parameters, the initial phase is adjusted by a phase shifter to obtain the target phase of each antenna element.

[0077] Step 304: Form the beam of the phased array antenna through the target amplitude of each antenna element and the target phase of each antenna element.

[0078] In the embodiment of the present invention, the beam of the phased array antenna is formed through the target amplitude of each antenna element and the target phase of each antenna element. The phased array antenna realizes nulling in the null direction and generates a high-gain beam in the target direction in the analog domain.

[0079] It can be seen from the above steps 301 to 304 that through the phase shifter and the attenuator, the initial amplitude and the initial phase are adjusted to obtain the target phase and the target amplitude, so that the beam of the phased array antenna formed through the target amplitude of each antenna element and the target phase of each antenna element realizes nulling in the null direction and generates a high-gain beam in the target direction.

[0080] Optionally, the MVDR algorithm can theoretically achieve (M - 1) nulls in different directions (M is the number of elements). In order to verify the nulling effect of the algorithm and the numerical value of the undistorted main lobe gain, verification is carried out in the following six scenarios. See Table 1, where Table 1 shows 6 different scenarios for verifying the conventional beam and the MVDR beam.

[0081] Table 1 6 different scenarios for verifying the conventional beam and the MVDR beam

[0082]

[0083] In the above MVDR beam pointing scenarios, the null factor coefficient is set to 1000, indicating that the null depth response in the null direction is 60 dB higher than the thermal noise power.

[0084] As Figure 4 shown, it is a half-space direction diagram provided by the embodiment of the present invention for the MVDR algorithm and obtained by modeling and simulation. All null directions in the figure fall on the sidelobe directions formed by the conventional beam, and the null directions are marked with red 'x'. It can be seen from the figure that in the MVDR beam pointing scenarios, without affecting the main lobe pointing direction, the sidelobes in all null directions disappear. Among them Figure 4 including Figure 4 (a), Figure 4 (b), Figure 4 (c),Figure 4 (d) Figure 4 (e)he Figure 4 (f). Figure 4 (a) Figure 4 (a) Conventional beam pointing (0°, 0°). Figure 4 (b) The MVDR beam points to (0°, 0°), two null directions. Figure 4 (c) MVDR beam pointing to (0°, 0°), four null directions;. Figure 4 (d) Conventional beam pointing (37°, 0°). Figure 4 (e) MVDR beam pointing to (37°, 0°), two null directions. Figure 4 (f) Five null directions based on MVDR beam pointing (37°, 0°).

[0085] However, the cost of MVDR forming a null is to broaden the beam width of the main lobe beam and reduce its maximum gain value. Figure 4 (a) and Figure 4 (d) The gain value in the direction of the target satellite for conventional beamforming, Figure 4 (b) and Figure 4 (c) dropped by 0.3dB and 0.5dB, Figure 4 (e) and Figure 4 (f) decreased by 0.1dB and 0.5dB respectively. Figure 4 It can be seen that as the number of null directions increases, the performance of the main lobe gradually deteriorates.

[0086] like Figure 5 As shown, a two-dimensional directional diagram of a MVDR beam forming method provided by an embodiment of the present invention is shown, wherein Figure 5 include Figure 5 (a) and Figure 5 (b), where Figure 5 (a) The main lobe points to (0°, 0°), Figure 5 (b) The main lobe points to (37°, 0°). It can be seen from the figure that the position of the null is very accurate in any scenario, the null depth is very deep, and as the null factor increases, an infinitesimal value can be achieved in theory.

[0087] pass Figure 4 and Figure 5 The results demonstrated the effectiveness of this joint simulation method and provided a theoretical basis and engineering practice for the subsequent realization of non-satellite spatial nulling in the simulation domain. In actual engineering, phase weighting can be achieved through phase shifter chips, and amplitude weighting can be achieved through attenuator chips, that is, the amplitude weighting is normalized, and the amplitude weighting less than 1 is attenuated, and the amplitude weighting equal to 1 is not attenuated.

[0088] Based on the same technical concept as above, an embodiment of the present invention further provides a device for determining beam parameters, which is applicable to the process of communicating with a target object through a phased array antenna, such as Figure 6 As shown, the device 600 includes:

[0089] An acquisition unit 601, configured to acquire the target direction and null direction of the phased array antenna for the target object; a processing unit 602, configured to input the target direction and null direction into the simulation model of the phased array antenna to obtain a first response vector and a second response vector; the first response vector is used to characterize the response characteristic of the phased array antenna to the incident signal in the target direction; the second response vector is used to characterize the response characteristic of the phased array antenna to the incident signal in the null direction; determine the beam parameters of the phased array antenna according to the first response vector and the second response vector; the beam parameters are used for the beam formed by the phased array antenna to form a null in the null direction.

[0090] Optionally, the processing unit 602 is specifically configured to: construct interference intensity information according to the second response vector and the null factor coefficient; the null factor coefficient characterizes the null depth and is used to increase the influence of the second response vector on the interference intensity information; determine the beam parameters of the phased array antenna according to the first response vector and the interference intensity information.

[0091] Optionally, the processing unit 602 is specifically configured to: construct interference intensity information through formula (1)

[0092]

[0093] where R x is the interference intensity information, is the thermal noise power, λ is the null factor coefficient, is the conjugate transpose of S i S i is the second response vector, I M is the M-order identity matrix, and M is the number of array elements of the phased array antenna.

[0094] Optionally, the null factor coefficient is set with the goal of being higher than the thermal noise power.

[0095] Optionally, the processing unit 602 is specifically configured to: determine the beam parameters of the phased array antenna through formula (2)

[0096]

[0097] where w is the beam parameter, is the inverse matrix of R x R x is the interference intensity information, is the conjugate transpose of S0, and S0 is the first response vector.

[0098] Optionally, the processing unit 602 is further configured to: obtain the initial amplitude and initial phase of each antenna element in the phased array antenna; adjust the initial amplitude based on the amplitude weight information in the beam parameters to obtain the target amplitude of each antenna element; adjust the initial phase based on the phase weight information in the beam parameters to obtain the target phase of each antenna element; and form the beam of the phased array antenna through the target amplitude of each antenna element and the target phase of each antenna element.

[0099] Based on the same technical concept, an embodiment of the present application provides a computing device 700, as Figure 7 shown, including at least one processor 701 and a memory 702 connected to the at least one processor. In the embodiment of the present application, the specific connection medium between the processor 701 and the memory 702 is not limited. Figure 7 Taking the example that the processor 701 and the memory 702 are connected through a bus. The bus can be divided into an address bus, a data bus, a control bus, etc.

[0100] In the embodiment of the present application, the memory 702 stores instructions executable by the at least one processor 701. The at least one processor 701 can execute the method steps of determining the beam parameters by executing the instructions stored in the memory 702.

[0101] Among them, the processor 701 is the control center of the computing device, and can connect various parts of the computing device through various interfaces and lines. By running or executing the instructions stored in the memory 702 and calling the data stored in the memory 702, the method of determining the beam parameters can be processed.

[0102] Optionally, the processor 701 may include one or more processing units. The processor 701 may integrate an application processor and a modem processor. Among them, the application processor mainly processes the operating system, user interface, application programs, etc., and the modem processor mainly processes wireless communication. It can be understood that the above modem processor can also be integrated into the processor 701. In some embodiments, the processor 701 and the memory 702 can be implemented on the same chip, and in some embodiments, they can also be implemented on separate chips independently.

[0103] The processor 701 may be a general-purpose processor, such as a central processing unit (CPU), a digital signal processor, an application specific integrated circuit (ASIC), a field programmable gate array, or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, and can implement or execute the various methods, steps, and logic block diagrams disclosed in the embodiments of the present application. The general-purpose processor may be a microprocessor or any conventional processor, etc. The steps of the method for determining beam parameters disclosed in combination with the embodiments of the present application may be directly embodied as being executed by a hardware processor, or executed by a combination of hardware and software modules in the processor.

[0104] As a non-volatile computer-readable storage medium, the memory 702 can be used to store non-volatile software programs, non-volatile computer-executable programs, and modules. The memory 702 may include at least one type of storage medium, for example, it may include flash memory, a hard disk, a multimedia card, a card-type memory, a random access memory (RAM), a static random access memory (SRAM), a programmable read-only memory (PROM), a read-only memory (ROM), an electrically erasable programmable read-only memory (EEPROM), a magnetic memory, a magnetic disk, an optical disk, and so on. The memory 702 is any other medium that can be used to carry or store the desired program code in the form of instructions or data structures and can be accessed by a computer device, but is not limited thereto. The memory 702 in the embodiments of the present application may also be a circuit or any other device capable of implementing a storage function, for storing program instructions and / or data.

[0105] Based on the same inventive concept, the embodiments of the present application provide a computer-readable storage medium, which stores a computer program executable by a computer device. When the program runs on the computer device, it causes the computer device to execute the steps of the method for determining beam parameters.

[0106] Based on the same inventive concept, the embodiments of the present application provide a computer program product, which stores a computer program executable by a computer device. When the program runs on the computer device, it causes the computer device to execute the steps of the method for determining beam parameters.

[0107] Those skilled in the art should understand that the embodiments of the present application can be provided as a method, a system, or a computer program product. Therefore, the present application can take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware aspects. Moreover, the present application can take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) that contain computer-usable program code.

[0108] The present application is described with reference to the flowcharts and / or block diagrams of methods, apparatuses (systems), and computer program products according to the present application. It should be understood that each flow and / or block in the flowchart and / or block diagram, as well as the combination of flows and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to the processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing devices to generate a machine, such that the instructions executed by the processor of the computer or other programmable data processing devices generate means for implementing the functions specified in Figure 1 one flow or multiple flows and / or blocks Figure 1 one block or multiple blocks.

[0109] These computer program instructions can also be stored in a computer-readable memory that can direct a computer or other programmable data processing device to work in a specific manner, such that the instructions stored in the computer-readable memory generate a manufactured article including instruction means that implement the functions specified in Figure 1 one flow or multiple flows and / or blocks Figure 1 one block or multiple blocks.

[0110] These computer program instructions can also be loaded onto a computer or other programmable data processing device, such that a series of operation steps are executed on the computer or other programmable device to generate a computer-implemented process, and thus the instructions executed on the computer or other programmable device provide steps for implementing the functions specified in Figure 1 one flow or multiple flows and / or blocks Figure 1 one block or multiple blocks.

[0111] Obviously, those skilled in the art can make various modifications and variations to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalent technologies, the present application is also intended to include these modifications and variations.

Claims

1. A method for determining beam parameters, characterized in that: Applicable to a process of communicating with a target object via a phased array antenna, the method comprising: Acquire a target direction and a null direction of the phased array antenna with respect to the target object; The target direction and the null direction are input into a simulation model of the phased array antenna to obtain a first response vector and a second response vector; the first response vector is used to characterize the response characteristics of the phased array antenna to the incident signal in the target direction; the second response vector is used to characterize the response characteristics of the phased array antenna to the incident signal in the null direction; The beam parameters of the phased array antenna are determined according to the first response vector and the second response vector; the beam parameters are used for the beam formed by the phased array antenna to form a null in the null direction.

2. The method according to claim 1, characterized in that Determining beam parameters of the phased array antenna according to the first response vector and the second response vector includes: Constructing interference intensity information according to the second response vector and the nulling factor coefficient; the nulling factor coefficient represents the nulling depth and is used to increase the influence of the second response vector on the interference intensity information; Determine a beam parameter of the phased array antenna according to the first response vector and the interference intensity information.

3. The method according to claim 2, characterized in that Constructing interference intensity information according to the second response vector and the nulling factor coefficient, including: Construct interference intensity information through formula (1) Among them, R x is the interference intensity information, is the thermal noise power, λ is the zero sink factor coefficient, For S i The conjugate transpose of S i is the second response vector, I M is an M-order unit matrix, and M is the number of array elements of the phased array antenna.

4. The method according to claim 2, characterized in that The null factor coefficient is set with the goal of being higher than the thermal noise power.

5. The method according to claim 2, characterized in that Determining the beam parameter of the phased array antenna according to the first response vector and the interference intensity information includes: The beam parameters of the phased array antenna are determined by formula (2): Where w is the beam parameter, For R x The inverse matrix, R x is the interference intensity information, is the conjugate transpose of S0, and S0 is the first response vector.

6. The method according to any one of claims 1 to 5, characterized in that: After determining the beam parameters of the phased array antenna, the method further includes: Acquiring an initial amplitude and an initial phase of each antenna unit in the phased array antenna; Based on the amplitude weight information in the beam parameters, the initial amplitude is adjusted to obtain a target amplitude of each antenna unit; Based on the phase weight information in the beam parameters, the initial phase is adjusted to obtain the target phase of each antenna unit; The beam of the phased array antenna is formed by the target amplitude of each antenna unit and the target phase of each antenna unit.

7. A device for determining beam parameters, characterized in that: Applicable to a process of communicating with a target object via a phased array antenna, the apparatus comprising: An acquisition unit, configured to acquire a target direction and a null direction of the phased array antenna with respect to the target object; A processing unit is used to input the target direction and the null direction into a simulation model of the phased array antenna to obtain a first response vector and a second response vector; the first response vector is used to characterize the response characteristics of the phased array antenna to the incident signal in the target direction; the second response vector is used to characterize the response characteristics of the phased array antenna to the incident signal in the null direction; according to the first response vector and the second response vector, the beam parameters of the phased array antenna are determined; the beam parameters are used for the beam formed by the phased array antenna to form a null in the null direction.

8. A computing device, characterized in that include: Memory for storing computer programs; A processor, configured to call a computer program stored in the memory, and execute the steps of the method according to any one of claims 1 to 6 according to the obtained program.

9. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a program, and when the program is run on a computer, the computer is enabled to implement the method according to any one of claims 1 to 6.

10. A computer program product comprising a computer program / instructions, characterized in that When the computer program / instructions are executed by a processor, the steps of the method according to claim 1 are implemented.

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