A dual-array multi-beam phased array beam cross calibration method, structure and device

Abstract

The dual-surface multi-beam phased array beam cross-calibration method provided in the embodiments of the present specification adopts back-to-back upper and lower dual-surface antennas, and the arrays are connected by a switch amplifier component that can realize a dual-path switch amplification function, so that the radio frequency paths connected to the upper and lower array antennas can be exchanged, thereby canceling the influence of the radio frequency path on the phase of the received signal by summing the phase differences of the upper and lower array antennas measured twice before and after the exchange of the radio frequency path, and obtaining the phase difference of the upper and lower array antennas, thereby realizing the phase calibration function of the dual-surface antenna.

Description

Technical Field

[0001] The embodiments of the present specification relate to the field of antenna technology, and in particular to a beam cross calibration method for a dual-array multi-beam phased array. Background Art

[0002] Phased array antennas can change the direction of the radiation pattern by controlling the feeding phase of each antenna unit to achieve the purpose of target detection, search, identification and tracking. They have the advantages of fast beam scanning speed, flexible beam shape agility, good antenna and radar platform commonality, high reliability and high precision. In actual phased array antennas, there are many sources of amplitude and phase errors. These errors are caused by phase shifters, feeding networks, amplitude units and mechanical mechanisms. These errors will increase the sidelobe level of the phased array antenna, generate beam pointing errors and reduce directivity. Therefore, calibration is very important and indispensable in phased array antennas.

[0003] At present, the commonly used phased array antenna calibration is divided into near-field calibration, mid-field calibration and far-field calibration. The specific methods include near-field scanning method, rotating vector method, phase-changing measurement method and mutual coupling calibration method. There are mainly the following methods: the first is to estimate the position of the auxiliary antenna, further obtain the array error distribution, and realize calibration through phase compensation; the second is to use the phased array antenna to track and receive low-orbit satellites, and use the actual satellite signal to calibrate the amplitude and phase errors of the entire path of each channel at one time; the third is to use a mid-field calibration method. Each time calibration is performed, a calibration antenna is set up at the mid-field distance. Through a specific algorithm, the position deviation of the calibration antenna caused by interference factors such as array deformation and installation accuracy is eliminated, and then the path difference between the calibration antenna and each array element is accurately calculated, and finally the inherent phase difference between each channel is obtained to achieve the calibration purpose. This method estimates the position of the auxiliary antenna, further obtains the array error distribution, and realizes calibration through phase compensation. However, these phased array antenna calibration methods are currently limited to the calibration of a single array, and cannot calibrate the phase between multiple arrays.

[0004] In view of this, how to provide a technology that can realize phase calibration of multiple array surfaces has become a technical problem that urgently needs to be solved. Summary of the invention

[0005] In view of this, an embodiment of the present specification provides a dual-plane multi-beam phased array beam cross calibration method. One or more embodiments of the present specification also relate to a dual-plane multi-beam phased array beam cross calibration structure, and a multi-plane multi-beam phased array beam cross calibration device, to solve the technical defect that multi-plane phased array antennas are difficult to perform phase calibration in the prior art.

[0006] According to a first aspect of an embodiment of this specification, a dual-array multi-beam phased array beam cross calibration method is provided, characterized in that it includes:

[0007] Connecting a first array antenna to a first radio frequency channel, connecting a second array antenna to a second radio frequency channel, receiving a signal from a transmitting source, and recording a first phase corresponding to the first array antenna and a second phase corresponding to the second array antenna after the received signal passes through the antenna unit and the radio frequency channel, wherein the first array antenna is an upper array antenna and the second array antenna is a lower array antenna; a switch amplifier component is connected between the first array antenna and the second array antenna, and the switch amplifier component is used to amplify the received signal;

[0008] Based on the switch amplifier component, the first array antenna is connected to the second radio frequency channel, and the second array antenna is connected to the first radio frequency channel to receive a signal from a transmitting source, and a third phase corresponding to the first array and a fourth phase corresponding to the second array are recorded after the received signal passes through the antenna unit and the radio frequency channel;

[0009] A phase difference between the first array antenna and the second array antenna is calculated based on the first phase, the second phase, the third phase, and the fourth phase.

[0010] According to a second aspect of an embodiment of this specification, a dual-array multi-beam phased array beam cross calibration structure is provided, characterized in that it includes:

[0011] The first array antenna is the upper array antenna;

[0012] The second array antenna is a lower array antenna, wherein the first array antenna and the second array antenna are placed back to back;

[0013] The switch amplifier component includes an integrated double-pole double-throw switch and two low-noise amplifiers, is located between the first array antenna and the second array antenna, and is connected to the first array antenna and the second array antenna, and is used to amplify the received signals from the first array antenna and the second array antenna, and control the first array antenna and the second array antenna to switch the radio frequency channels.

[0014] According to a third aspect of the embodiments of this specification, a dual-array multi-beam phased array beam cross calibration device is provided, characterized in that it includes:

[0015] a first recording unit, configured to connect the first array antenna to the first radio frequency channel, connect the second array antenna to the second radio frequency channel, receive a signal from a transmitting source, and record a first phase corresponding to the first array antenna and a second phase corresponding to the second array antenna after the received signal passes through the antenna unit and the radio frequency channel, wherein the first array antenna is an upper array antenna and the second array antenna is a lower array antenna; a switch amplifier component is connected between the first array antenna and the second array antenna, and the switch amplifier component is used to amplify the received signal;

[0016] a second recording unit configured to connect the first array antenna to the second radio frequency channel and the second array antenna to the first radio frequency channel based on the switch amplification component, receive a signal from a transmitting source, and record a third phase corresponding to the first array and a fourth phase corresponding to the second array after the received signal passes through the antenna unit and the radio frequency channel;

[0017] The calculation unit is configured to calculate a phase difference between the first array antenna and the second array antenna based on the first phase, the second phase, the third phase and the fourth phase.

[0018] An embodiment of the present specification provides a dual-array multi-beam phased array beam cross calibration method, comprising: first, connecting a first array antenna to a first radio frequency channel, connecting a second array antenna to a second radio frequency channel, receiving a signal from a transmitting source, and recording a first phase corresponding to the first array antenna and a second phase corresponding to the second array antenna after the received signal passes through an antenna unit and a radio frequency channel, wherein the first array antenna is an upper array antenna and the second array antenna is a lower array antenna; a switch amplifier component is connected between the first array antenna and the second array antenna, and the switch amplifier component is used to amplify the received signal; then, based on the switch amplifier component, connecting the first array antenna to the second radio frequency channel, connecting the second array antenna to the first radio frequency channel, receiving a signal from a transmitting source, and recording a third phase corresponding to the first array and a fourth phase corresponding to the second array after the received signal passes through the antenna unit and the radio frequency channel; finally, calculating the phase difference between the first array antenna and the second array antenna based on the first phase, the second phase, the third phase and the fourth phase.

[0019] The dual-surface multi-beam phased array beam cross-calibration method provided in the embodiments of the present specification adopts back-to-back upper and lower dual-surface antennas, and the arrays are connected by a switch amplifier component that can realize a dual-path switch amplification function, so that the radio frequency paths connected to the upper and lower array antennas can be exchanged, thereby canceling the influence of the radio frequency path on the phase of the received signal by summing the phase differences of the upper and lower array antennas measured twice before and after the exchange of the radio frequency path, and obtaining the phase difference of the upper and lower array antennas, thereby realizing the phase calibration function of the dual-surface antenna. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a flowchart of a dual-array multi-beam phased array beam cross calibration method provided by an embodiment of this specification;

[0021] Figure 2 It is a structural schematic diagram of a switch amplification component in a dual-array multi-beam phased array beam cross calibration device provided by an embodiment of the present specification;

[0022] Figure 3 It is a cross-sectional schematic diagram of a dual-array multi-beam phased array beam cross calibration device provided by an embodiment of the present specification;

[0023] Figure 4 It is a block diagram of a dual-array multi-beam phased array beam cross calibration device provided by an embodiment of the present specification. DETAILED DESCRIPTION

[0024] Many specific details are described in the following description to facilitate a full understanding of this specification. However, this specification can be implemented in many other ways than those described herein, and those skilled in the art can make similar generalizations without violating the connotation of this specification, so this specification is not limited to the specific implementation disclosed below.

[0025] The terms used in one or more embodiments of this specification are only for the purpose of describing specific embodiments, and are not intended to limit one or more embodiments of this specification. The singular forms of "a", "said" and "the" used in one or more embodiments of this specification and the appended claims are also intended to include plural forms, unless the context clearly indicates other meanings. It should also be understood that the term "and / or" used in one or more embodiments of this specification refers to and includes any or all possible combinations of one or more associated listed items.

[0026] It should be understood that although the terms first, second, etc. may be used to describe various information in one or more embodiments of this specification, this information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of one or more embodiments of this specification, the first may also be referred to as the second, and similarly, the second may also be referred to as the first. Depending on the context, the word "if" as used herein may be interpreted as "at the time of" or "when" or "in response to determining".

[0027] In addition, it should be noted that the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data used for analysis, stored data, displayed data, etc.) involved in one or more embodiments of this specification are all information and data authorized by the user or fully authorized by all parties, and the collection, use and processing of relevant data must comply with the relevant laws, regulations and standards of the relevant countries and regions, and provide corresponding operation entrances for users to choose to authorize or refuse.

[0028] In this specification, a dual-array multi-beam phased array beam cross-calibration method is provided. This specification also relates to a dual-array multi-beam phased array beam cross-calibration device, a computer device, and a computer-readable storage medium, which are described in detail one by one in the following embodiments.

[0029] See also Figure 1 , Figure 1 It is a flow chart of a dual-array multi-beam phased array beam cross calibration method provided by an embodiment of the present specification, which specifically includes the following steps.

[0030] Step S102: Connect the first array antenna to the first RF channel, connect the second array antenna to the second RF channel, receive a signal from a transmitting source, and record a first phase corresponding to the first array antenna and a second phase corresponding to the second array antenna after the received signal passes through the antenna unit and the RF channel.

[0031] It should be noted that the first array antenna is an upper array antenna, the second array antenna is a lower array antenna, and a switch amplifier component is connected between the first array antenna and the second array antenna, wherein the switch amplifier component is used to amplify the received signal, or control the first array antenna and the second array antenna to switch the radio frequency channel. Specifically, the switch amplifier component here is located between the first array antenna and the second array antenna, and can amplify the signal received by the first array antenna and the second array antenna, and enable the first array antenna and the second array antenna to switch between two paths to realize the calibration function of the system.

[0032] See also Figure 2 , Figure 2 FIG. 1 is a schematic diagram of a switch amplification component in a dual-array multi-beam phased array beam cross calibration device provided by an embodiment of the present specification. Figure 2 As shown, the switch amplification component is mainly composed of an integrated double-pole double-throw switch and two low-noise amplifiers (i.e., LNAs) to realize the function of dual-path switch amplification. Specifically, the integrated double-pole double-throw switch includes: two single-pole three-throw switches and two single-pole three-throw switches, wherein the single-pole double-throw switches are respectively connected to the upper antenna (i.e., the first array antenna) and the lower antenna (i.e., the second array antenna), and the two single-pole three-throw switches are respectively connected to two low-noise amplifiers.

[0033] Specifically, the components inside the switch amplifier assembly are metal ceramic tube package and surface mount devices, without exposed chips, see Figure 3 , Figure 3 It is a cross-sectional schematic diagram of a dual-array multi-beam phased array beam cross calibration device provided by an embodiment of the present specification.

[0034] Specifically, the chips used for internal packaging components are all GaAs chips, which can meet the radiation resistance requirements, adopt micro-assembly technology, and metal hermetic packaging.

[0035] The entire module is sealed with a threaded cover to meet the requirements of the onboard use environment.

[0036] The switch amplifier assembly is managed and controlled as a single component in the entire antenna system.

[0037] The transmitting source here satisfies the far field condition and is located at a fixed position in the far field, and the radiation wave reaching the multi-beam phased array is a plane wave. In the embodiment of this specification, the phase of the transmitting signal when it reaches the dual-array antenna is recorded as

[0038] In one embodiment of the present specification, in the recorded received signal, the first phase corresponding to the first array antenna and the second phase corresponding to the second array antenna include: obtaining the first phase based on the signal corresponding to the transmitting source, the phase shift generated by the first array antenna, and the phase shift generated by the first radio frequency channel; obtaining the second phase based on the signal corresponding to the transmitting source, the phase shift generated by the second array antenna, and the phase shift generated by the second radio frequency channel.

[0039] Specifically, the first phase is calculated according to the following formula:

[0040]

[0041] in, The first array antenna is connected to the first radio frequency channel, and the first phase corresponding to the first array antenna after the received signal passes through the antenna unit and the radio frequency channel; is the phase of the transmitted signal when it reaches the dual-array antenna; is the phase shift produced by the first array antenna; is the phase shift produced by the first RF channel.

[0042] The second phase is calculated according to the following formula:

[0043]

[0044] in, The second array antenna is connected to the second radio frequency channel, and the second array antenna corresponds to the second phase after the received signal passes through the antenna unit and the radio frequency channel; is the phase shift produced by the second array antenna; is the phase shift produced by the second RF channel.

[0045] After the phase generated when the first array antenna is connected to the first RF channel and the second array antenna is connected to the second RF channel is completed, the connection mode of the first array antenna, the second array antenna and the first RF channel and the second RF channel is switched through the switching amplifier to obtain their respective phases. The specific implementation method is as follows.

[0046] Step S104: Based on the switch amplification component, the first array antenna is connected to the second RF channel, and the second array antenna is connected to the first RF channel to receive a signal from a transmitting source, and the third phase corresponding to the first array and the fourth phase corresponding to the second array in the received signal are recorded.

[0047] In the embodiment of the present specification, in the recorded received signal, the third phase corresponding to the first array and the fourth phase corresponding to the second array include: obtaining the third phase based on the signal corresponding to the transmitting source, the phase shift generated by the first array antenna, and the phase shift generated by the second RF channel; and obtaining the fourth phase based on the signal corresponding to the transmitting source, the phase shift generated by the second array antenna, and the phase shift generated by the first RF channel.

[0048] Specifically, the third phase is calculated according to the following formula:

[0049]

[0050] in, The first array antenna is connected to the second radio frequency channel, and the third phase corresponding to the first array antenna after the received signal passes through the antenna unit and the radio frequency channel; is the phase of the transmitted signal when it reaches the dual-array antenna; is the phase shift produced by the first array antenna; is the phase shift produced by the second RF channel.

[0051] The fourth phase is calculated according to the following formula:

[0052]

[0053] in, The second array antenna is connected to the first radio frequency channel, and the fourth phase corresponding to the second array antenna after the received signal passes through the antenna unit and the radio frequency channel; is the phase of the transmitted signal when it reaches the dual-array antenna; is the phase shift produced by the second array antenna; is the phase shift produced by the first RF channel.

[0054] After the RF paths connecting the dual arrays are exchanged through the switch amplifier component and the exchanged phase is obtained, the influence of the RF path on the phase of the received signal is offset through correlation calculation, thereby obtaining the phase difference of the dual array antenna. The specific implementation method is as follows.

[0055] Step S106: Based on the first phase, the second phase, the third phase and the fourth phase, a phase difference between the first array antenna and the second array antenna is calculated.

[0056] In the embodiment of this specification, the phase difference between the first array antenna and the second array antenna is calculated based on the first phase, the second phase, the third phase and the fourth phase, including:

[0057] The phase difference between the first array antenna and the second array antenna is calculated based on the following calculation formula:

[0058]

[0059]

[0060]

[0061] According to formulas (5), (6) and (7), the phase difference between the first array antenna and the second array antenna is calculated:

[0062]

[0063] in, is the phase shift produced by the first array antenna; is the phase shift produced by the second array antenna; The first array antenna is connected to the first radio frequency channel, and the first phase corresponding to the first array antenna after the received signal passes through the antenna unit and the radio frequency channel; The second array antenna is connected to the second radio frequency channel, and the second array antenna corresponds to the second phase after the received signal passes through the antenna unit and the radio frequency channel; The first array antenna is connected to the second radio frequency channel, and the third phase corresponding to the first array antenna after the received signal passes through the antenna unit and the radio frequency channel; The second array antenna is connected to the first radio frequency channel. After the received signal passes through the antenna unit and the radio frequency channel, the second array antenna corresponds to the fourth phase.

[0064] The dual-surface multi-beam phased array beam cross-calibration method provided in the embodiments of the present specification adopts back-to-back upper and lower dual-surface antennas, and the arrays are connected by a switch amplifier component that can realize a dual-path switch amplification function, so that the radio frequency paths connected to the upper and lower array antennas can be exchanged, thereby canceling the influence of the radio frequency path on the phase of the received signal by summing the phase differences of the upper and lower array antennas measured twice before and after the exchange of the radio frequency path, and obtaining the phase difference of the upper and lower array antennas, thereby realizing the phase calibration function of the dual-surface antenna.

[0065] See also Figure 4 , Figure 4 FIG. 1 is a block diagram of a dual-array multi-beam phased array beam cross calibration device provided by an embodiment of the present specification. Figure 4 As shown, the device includes the following units.

[0066] The first recording unit 402 is configured to connect the first array antenna to the first radio frequency channel, connect the second array antenna to the second radio frequency channel, receive a signal from a transmitting source, and record a first phase corresponding to the first array antenna and a second phase corresponding to the second array antenna after the received signal passes through the antenna unit and the radio frequency channel, wherein the first array antenna is an upper array antenna and the second array antenna is a lower array antenna; a switch amplifier component is connected between the first array antenna and the second array antenna, and the switch amplifier component is used to amplify the received signal;

[0067] The second recording unit 404 is configured to connect the first array antenna to the second RF channel and connect the second array antenna to the first RF channel based on the switch amplifier component, receive the signal from the transmission source, and record the third phase corresponding to the first array and the fourth phase corresponding to the second array after the received signal passes through the antenna unit and the RF channel;

[0068] The calculation unit 406 is configured to calculate a phase difference between the first array antenna and the second array antenna based on the first phase, the second phase, the third phase and the fourth phase.

[0069] In an optional embodiment, the first recording unit 402 includes:

[0070] Obtaining a first phase based on a signal corresponding to the transmitting source, a phase shift generated by the first array antenna, and a phase shift generated by the first radio frequency channel;

[0071] A second phase is obtained based on the signal corresponding to the transmission source, the phase shift generated by the second array antenna and the phase shift generated by the second radio frequency channel.

[0072] In an optional embodiment, the first recording unit 404 includes:

[0073] Obtaining a third phase based on the signal corresponding to the transmitting source, the phase shift generated by the first array antenna, and the phase shift generated by the second radio frequency channel;

[0074] A fourth phase is obtained based on the signal corresponding to the transmission source, the phase shift generated by the second array antenna, and the phase shift generated by the first radio frequency channel.

[0075] In an optional embodiment, the calculation unit 406 includes:

[0076] The phase difference between the first array antenna and the second array antenna is calculated based on the following calculation formula:

[0077]

[0078] in, is the phase shift produced by the first array antenna; is the phase shift produced by the second array antenna; The first array antenna is connected to the first radio frequency channel, and the first phase corresponding to the first array antenna after the received signal passes through the antenna unit and the radio frequency channel; The second array antenna is connected to the second radio frequency channel, and the second array antenna corresponds to the second phase after the received signal passes through the antenna unit and the radio frequency channel; The first array antenna is connected to the second radio frequency channel, and the third phase corresponding to the first array antenna after the received signal passes through the antenna unit and the radio frequency channel; The second array antenna is connected to the first radio frequency channel. After the received signal passes through the antenna unit and the radio frequency channel, the second array antenna corresponds to the fourth phase.

[0079] In an optional embodiment, the emission source in the first recording unit 402 meets the far-field condition and is located at a fixed position in the far field, and the radiation wave reaching the multi-beam phased array is a plane wave.

[0080] The dual-array multi-beam phased array beam cross calibration device provided by the embodiment of the present specification adopts back-to-back upper and lower dual-array antennas, and the arrays are connected by a switch amplifier component that can realize a dual-path switch amplification function, so that the radio frequency paths connected to the upper and lower array antennas can be exchanged, thereby canceling the influence of the radio frequency path on the phase of the received signal by summing the phase differences of the upper and lower array antennas measured twice before and after the exchange of the radio frequency path, and obtaining the phase difference of the upper and lower array antennas, thereby realizing the phase calibration function of the dual-array antenna.

[0081] It should be noted that, for the above-mentioned method embodiments, for the sake of simplicity of description, they are all expressed as a series of action combinations, but those skilled in the art should be aware that the embodiments of this specification are not limited by the order of the actions described, because according to the embodiments of this specification, some steps can be performed in other orders or simultaneously. Secondly, those skilled in the art should also be aware that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily required by the embodiments of this specification.

[0082] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0083] The preferred embodiments of this specification disclosed above are only used to help explain this specification. The optional embodiments do not describe all the details in detail, nor do they limit the invention to only the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of the embodiments of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the embodiments of this specification, so that technicians in the relevant technical field can well understand and use this specification. This specification is only limited by the claims and their full scope and equivalents.

Claims

1. A dual-array multi-beam phased array beam cross calibration method, characterized in that: include: The first array antenna is connected to the first radio frequency channel, and the second array antenna is connected to the second radio frequency channel, to receive a signal from a transmitting source, and to record a first phase corresponding to the first array antenna and a second phase corresponding to the second array antenna after the received signal passes through the antenna unit and the radio frequency channel, wherein the first array antenna is an upper array antenna, the second array antenna is a lower array antenna, and the first array antenna and the second array antenna are placed back to back; a switch amplifier component is connected between the first array antenna and the second array antenna, and the switch amplifier component is used to amplify the received signal. The switch amplifier component includes an integrated double-pole double-throw switch and two low-noise amplifiers, which are located between the first array antenna and the second array antenna and connected to the first array antenna and the second array antenna, and are used to amplify the received signals from the first array antenna and the second array antenna, and control the first array antenna and the second array antenna to switch the radio frequency channels; the components inside the switch amplifier component are metal ceramic tube package and surface mount devices, wherein the packaged components adopt micro-assembly technology and metal hermetic packaging; the switch amplifier component is sealed by threaded fastening; Based on the switch amplifier component, the first array antenna is connected to the second radio frequency channel, and the second array antenna is connected to the first radio frequency channel to receive a signal from a transmitting source, and a third phase corresponding to the first array and a fourth phase corresponding to the second array are recorded after the received signal passes through the antenna unit and the radio frequency channel; Calculate the phase difference between the first array antenna and the second array antenna based on the first phase, the second phase, the third phase and the fourth phase; The calculating the phase difference between the first array antenna and the second array antenna based on the first phase, the second phase, the third phase and the fourth phase includes: The phase difference between the first array antenna and the second array antenna is calculated based on the following calculation formula: in, is the phase shift produced by the first array antenna; is the phase shift produced by the second array antenna; The first array antenna is connected to the first radio frequency channel, and the first phase corresponding to the first array antenna after the received signal passes through the antenna unit and the radio frequency channel; The second array antenna is connected to the second radio frequency channel, and the second array antenna corresponds to the second phase after the received signal passes through the antenna unit and the radio frequency channel; The first array antenna is connected to the second radio frequency channel, and the third phase corresponding to the first array antenna after the received signal passes through the antenna unit and the radio frequency channel; The second array antenna is connected to the first radio frequency channel. After the received signal passes through the antenna unit and the radio frequency channel, the second array antenna corresponds to the fourth phase.

2. The method according to claim 1, characterized in that In the recorded received signal, the first phase corresponding to the first array antenna and the second phase corresponding to the second array antenna include: Obtaining a first phase based on a signal corresponding to the transmitting source, a phase shift generated by the first array antenna, and a phase shift generated by the first radio frequency channel; A second phase is obtained based on the signal corresponding to the transmission source, the phase shift generated by the second array antenna and the phase shift generated by the second radio frequency channel.

3. The method according to claim 1, characterized in that In the recorded received signal, the third phase corresponding to the first array and the fourth phase corresponding to the second array include: Obtaining a third phase based on the signal corresponding to the transmitting source, the phase shift generated by the first array antenna, and the phase shift generated by the second radio frequency channel; A fourth phase is obtained based on the signal corresponding to the transmission source, the phase shift generated by the second array antenna, and the phase shift generated by the first radio frequency channel.

4. The method according to claim 1, characterized in that: The transmitting source meets the far-field condition and is located at a fixed position in the far field, and the radiation wave reaching the multi-beam phased array is a plane wave.

5. A dual-array multi-beam phased array beam cross calibration device, characterized in that: include: The first recording unit is configured to connect the first array antenna to the first radio frequency channel, connect the second array antenna to the second radio frequency channel, receive a signal from a transmitting source, and record a first phase corresponding to the first array antenna and a second phase corresponding to the second array antenna after the received signal passes through the antenna unit and the radio frequency channel, wherein the first array antenna is an upper array antenna, the second array antenna is a lower array antenna, and the first array antenna and the second array antenna are placed back to back; a switch amplifier component is connected between the first array antenna and the second array antenna, and the switch amplifier component is used to amplify the received signal, The switch amplifier component includes an integrated double-pole double-throw switch and two low-noise amplifiers, is located between the first array antenna and the second array antenna, and is connected to the first array antenna and the second array antenna, and is used to amplify the received signals from the first array antenna and the second array antenna, and control the first array antenna and the second array antenna to switch the radio frequency channels; the components inside the switch amplifier component are metal ceramic tube package and surface mount devices, wherein the packaged components adopt micro-assembly technology and metal hermetic packaging; the switch amplifier component is sealed by threaded fastening; a second recording unit configured to connect the first array antenna to the second radio frequency channel and the second array antenna to the first radio frequency channel based on the switch amplification component, receive a signal from a transmitting source, and record a third phase corresponding to the first array and a fourth phase corresponding to the second array after the received signal passes through the antenna unit and the radio frequency channel; a calculation unit, configured to calculate a phase difference between the first array antenna and the second array antenna based on the first phase, the second phase, the third phase and the fourth phase; The calculating the phase difference between the first array antenna and the second array antenna based on the first phase, the second phase, the third phase and the fourth phase includes: The phase difference between the first array antenna and the second array antenna is calculated based on the following calculation formula: in, is the phase shift produced by the first array antenna; is the phase shift produced by the second array antenna; The first array antenna is connected to the first radio frequency channel, and the first phase corresponding to the first array antenna after the received signal passes through the antenna unit and the radio frequency channel; The second array antenna is connected to the second radio frequency channel, and the second array antenna corresponds to the second phase after the received signal passes through the antenna unit and the radio frequency channel; The first array antenna is connected to the second radio frequency channel, and the third phase corresponding to the first array antenna after the received signal passes through the antenna unit and the radio frequency channel; The second array antenna is connected to the first radio frequency channel. After the received signal passes through the antenna unit and the radio frequency channel, the second array antenna corresponds to the fourth phase.

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