Amplitude and phase consistency calibration method between array planes and multi-plane phased array antenna system

Abstract

The invention discloses a calibration method for amplitude and phase consistency between array planes and a multi-plane phased-array antenna system, and the method comprises the steps: carrying out the calibration of the amplitude and phase of a beam signal between adjacent array planes of the multi-plane phased-array antenna system, the continuity of the amplitude and the phase of the signal during the switching of the beam signals of the adjacent array planes of the multi-plane phased-array antenna system is ensured; after amplitude and phase calibration of beam signals between adjacent array planes of the multi-plane phased-array antenna system is completed, each array plane independently forms a beam to perform tracking measurement and control on a space target, so that continuous beam tracking measurement and control of the multi-plane phased-array antenna system on the space target in a whole airspace range is realized. According to the invention, when the space target is switched between the coverage airspaces of the array planes of the multi-plane phased-array antenna system, the continuity of the amplitude and the phase of the signal when the adjacent array plane beam signals of the multi-plane phased-array antenna system are switched can be ensured.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of phased array antennas, in particular to a method for calibrating amplitude and phase consistency between arrays and a multi-array phased array antenna system. BACKGROUND

[0002] Digital multi-beam phased array antennas can simultaneously track and control multiple space targets due to their multi-beam operation mode and the technical advantage of full space coverage, and have been increasingly valued in recent years in the research of new antennas, becoming a hot field of new antenna research.

[0003] The biggest technical advantage of the application of digital multi-beam phased array antennas is that multiple independent beams can be formed, and multiple independent antennas can be equivalent to track and control multiple targets respectively. In order to meet the full coverage of the phased array antenna system to the entire space target, two technical routes can be used to solve the problem. One is to use a spherical array to achieve continuous wave tracking and control of multiple targets in the full space. Although this method can directly achieve continuous wave tracking and control of targets in the full space, the implementation cost is high, and there is also a certain technical difficulty in calibrating the phase consistency of the entire spherical array. The other method is to use multiple planar arrays, each of which is responsible for a space range, so that the entire phased array antenna system can meet the tracking and control of multiple targets in the full space. This method has a lower implementation cost and is simple to implement the phase consistency calibration of each planar array, but the problem is that when the space target switches between the space regions of the planar arrays, that is, the target enters another planar array coverage area from one planar array coverage area, due to the inconsistency of the beams formed by each array, the multi-array antenna receives the signal of the space target, which has jumps in amplitude and phase, and cannot track and control the target continuously. This limits the application of the multi-array phased array antenna system. Therefore, in order to more effectively utilize the multi-array phased array antenna system, how to realize continuous wave tracking and control of space targets in the multi-array phased array antenna system has become a key technical problem that needs to be solved urgently. SUMMARY

[0004] In view of this, the present application provides a method for calibrating amplitude and phase consistency between arrays and a multi-array phased array antenna system, aiming to provide a simple, reliable and easy-to-implement method for realizing continuous wave tracking and control of space targets on a multi-array phased array antenna. This method does not need to add any external equipment, which is beneficial to designing a multi-array phased array antenna system that meets the index requirements in engineering practice.

[0005] The present application discloses a method for calibrating amplitude and phase consistency between arrays, which is applied to a multi-array phased array antenna system, and includes the following steps: The amplitudes and phases of downlink beam signals between adjacent array surfaces of the multi-surface phased array antenna system are calibrated to ensure the continuity of the amplitudes and phases of the beam signals when the adjacent array surfaces of the multi-surface phased array antenna system switch the beam signals; the downlink beam signals are calibration signals emitted by a calibration signal source to the array surfaces of the multi-surface phased array antenna system. After the calibration of the amplitudes and phases of the beam signals between adjacent array surfaces of the multi-surface phased array antenna system is completed, each array surface of the multi-surface phased array antenna system forms a beam to track and control a space target, so as to realize the continuous beam tracking and control of the multi-surface phased array antenna system on the space target in the full airspace range.

[0006] Further, the calibration of the amplitudes and phases of the downlink beam signals between adjacent array surfaces of the multi-surface phased array antenna system comprises: The calibration signal source is carried by the unmanned aerial vehicle, and the unmanned aerial vehicle is positioned at a position with a height of H on the central axis of the multi-surface phased array antenna system; H is greater than the far field distance of the multi-surface phased array antenna system. When the calibration signal source of the unmanned aerial vehicle is used to calibrate all the array surfaces of the multi-surface phased array antenna system, all the array surfaces of the multi-surface phased array antenna system simultaneously form signal beams to the unmanned aerial vehicle, and simultaneously receive the calibration signals emitted by the calibration signal source of the unmanned aerial vehicle and send the calibration signals to the array-to-array beam signal amplitude and phase consistency calibration unit for calibration, so as to realize the consistency correction of the phases and amplitudes of the beam signals of all the array surfaces; H is the distance between the unmanned aerial vehicle and the multi-surface phased array antenna system.

[0007] Further, the expression of the far field distance of the multi-surface phased array antenna system is:

[0008] wherein, is the far field distance of the multi-surface phased array antenna system, is the signal frequency, is the width of the multi-surface phased array antenna system, and c is the speed of light.

[0009] Further, the consistency correction of the phases and amplitudes of the beam signals of all the array surfaces comprises: An array-to-array beam signal amplitude and phase consistency calibration unit is added in the beam forming unit of the multi-surface phased array antenna system; each signal amplitude and phase consistency calibration unit in the array-to-array beam signal amplitude and phase consistency calibration unit takes the downlink beam signal received by one array surface of the multi-surface phased array antenna system as a reference, respectively compares the differences in amplitudes and phases between the downlink beam signals received by all the array surfaces of the multi-surface phased array antenna system except the array surface and the downlink beam signal received by the array surface, and obtains the phase compensation values and amplitude compensation values of the downlink beam signals of all the array surfaces except the array surface. The phase compensation value and the amplitude compensation value of all the arrays of the multi-surface phased array antenna system except the array are used to compensate the amplitude and the phase of the downlink beam signal of the corresponding array, so as to complete the array element amplitude and phase consistency calibration of each array of the multi-surface phased array antenna system, and finally realize the full-space continuous wave tracking and control of the target of the multi-surface phased array antenna system.

[0010] Further, the difference between the amplitude and the phase of the downlink beam signal received by each array of the multi-surface phased array antenna system and the downlink beam signal received by the array is compared, and the phase compensation value and the amplitude compensation value of the downlink beam signal of all the arrays except the array are obtained, which comprises: The amplitude of the downlink beam signal received by each array except the array is subtracted from the amplitude of the downlink beam signal received by the array, and the absolute value of the difference is the amplitude compensation value of the downlink beam signal of the corresponding array; The phase of the downlink beam signal received by each array except the array is subtracted from the phase of the downlink beam signal received by the array, and the absolute value of the difference is the phase compensation value of the downlink beam signal of the corresponding array.

[0011] The application also discloses a multi-surface phased array antenna system composed of a plurality of independent planar phased arrays; each planar phased array comprises a beam forming unit; the beam forming unit comprises an inter-array beam signal amplitude and phase consistency calibration unit.

[0012] Further, the inter-array beam signal amplitude and phase consistency calibration unit comprises a plurality of signal amplitude and phase consistency calibration units, each of which is used to compare the downlink beam signal received by each array of the multi-surface phased array antenna system with the downlink beam signal received by a designated array, and output the amplitude compensation value and the phase compensation value of the downlink beam signal of each array; the designated array is any array in the multi-surface phased array antenna system.

[0013] Further, the total number of the signal amplitude and phase consistency calibration units in the inter-array beam signal amplitude and phase consistency calibration unit is equal to the total number of the arrays in the multi-surface phased array antenna system.

[0014] Further, each planar phased array covers a space domain, the plurality of independent planar phased arrays cover the entire space domain of the multi-surface phased array antenna system, and each planar phased array is an array.

[0015] Further, each array plane in the multi-array plane phased array antenna system is at an angle with the ground and faces each direction of the multi-array plane phased array antenna system, and each array plane can track and control a space target in a space covered by the array plane; when the space target is in the space covered by each array plane, the space target is tracked and controlled by the corresponding array plane.

[0016] Due to the adoption of the above technical solutions, the application has the following advantages: 1. The amplitude and phase consistency calibration problem between array planes of a multi-array plane phased array antenna is solved. The application provides an amplitude and phase consistency calibration method between array planes and a multi-array plane phased array antenna system. An unmanned aerial vehicle is used to complete the amplitude and phase consistency calibration of beam signals of each array plane, finally meeting the demand of continuous beam tracking and control of the multi-array plane phased array antenna system in the whole space, improving the performance of the multi-array plane phased array antenna system, and solving a key problem in the design of the multi-array plane phased array antenna system.

[0017] 2. The implementation is simple, the resource occupation is less, and the system design cost is reduced. The application does not need complex circuits, and the implementation method is relatively simple. The application only uses the original equipment of the system without adding additional equipment, and the amplitude and phase consistency calibration function between array planes of the multi-array plane phased array antenna is realized through a software algorithm, which is convenient for automatic operation and reduces the system design cost.

[0018] 3. The application is simple and fast to operate, and is convenient for system design. The operation process of the application is simple, and it is convenient to locate and troubleshoot problems in the design of the multi-array plane phased array antenna system. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the application, the following will briefly introduce the drawings needed to be used in the embodiment description. Obviously, the drawings in the following description are only some embodiments described in the application, and other drawings can also be obtained by those skilled in the art according to these drawings.

[0020] Figure 1 is a schematic diagram of a four-array plane phased array antenna system.

[0021] Figure 2 is a top view of a four-array plane phased array antenna system.

[0022] Figure 3 is a schematic diagram of calibrating the array plane of the four-array plane phased array antenna system by using an unmanned aerial vehicle.

[0023] Figure 4 is a top view of calibrating the array plane of the four-array plane phased array antenna system by using an unmanned aerial vehicle.

[0024] Figure 5is a block diagram of an array inter-beam signal amplitude and phase consistency calibration unit. DETAILED DESCRIPTION

[0025] The application is further described in conjunction with the accompanying drawings and embodiments, and the described embodiments are only part of the embodiments of the application, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art should fall within the scope of protection of the embodiments of the application.

[0026] Multi-surface phased array antenna systems are widely used due to their low implementation cost and ease of implementation of amplitude and phase consistency calibration of antenna array surfaces. However, when the multi-surface phased array antenna system switches between the spatial regions of the planar array, there is a jump in the amplitude and phase of the signal, so it cannot continuously track and control the target, which limits the application of the multi-surface phased array antenna system. According to the characteristics of the multi-surface phased array antenna system, the application provides an amplitude and phase consistency calibration method between arrays and a multi-surface phased array antenna. The method is simple, reliable and easy to implement, and can meet the needs of the multi-surface phased array antenna for continuous wave tracking and control of space targets in engineering practice. Using the method, a multi-surface phased array antenna system that meets the index requirements can be designed in engineering practice.

[0027] Referring to Figure 1 The application provides an embodiment of an amplitude and phase consistency calibration method between arrays, applied to a multi-surface phased array antenna system, which includes: The amplitudes and phases of the downlink beam signals between adjacent arrays of the multi-surface phased array antenna system are calibrated to ensure the continuity of the amplitudes and phases of the signals when the beam signals of the adjacent arrays of the multi-surface phased array antenna system are switched; the downlink beam signals are calibration signals emitted by a calibration signal source to the arrays of the multi-surface phased array antenna system; After the calibration of the amplitudes and phases of the beam signals between adjacent arrays of the multi-surface phased array antenna system is completed, each array of the multi-surface phased array antenna system forms a beam to track and control a space target, so as to realize continuous beam tracking and control of the space target in the full airspace range by the multi-surface phased array antenna system.

[0028] After the consistency calibration of the amplitudes and phases of the array elements of each array surface of the multi-surface phased array antenna system is completed, the beams of each array surface can be formed individually to track and control the space target individually. In order to meet the continuous beam tracking and control of the space target in the full airspace range of the antenna system, it is necessary to ensure the continuity of the amplitudes and phases of the adjacent array surface beam signals when the space target switches between the control airspaces of the array surfaces. Therefore, the consistency calibration of the amplitudes and phases of the beams formed by the adjacent array surfaces is required. The unmanned aerial vehicle is used to complete the consistency calibration of the amplitudes and phases of the beam signals of each array surface, and finally the demand for full airspace continuous beam tracking and control of the multi-surface phased array antenna system is met, and the performance of the multi-surface phased array antenna system is improved.

[0029] Optionally, the consistency calibration of the amplitudes and phases of the downlink beam signals between the adjacent array surfaces of the multi-surface phased array antenna system comprises: The calibration signal source is carried by the unmanned aerial vehicle, and the unmanned aerial vehicle is positioned at a position with a height of H on the central axis of the multi-surface phased array antenna system; H is greater than the far field distance of the multi-surface phased array antenna system. When the calibration signal source of the unmanned aerial vehicle is used to calibrate all array surfaces of the multi-surface phased array antenna system, all array surfaces of the multi-surface phased array antenna system simultaneously form signal beams to the unmanned aerial vehicle, and simultaneously receive the calibration signals emitted by the calibration signal source of the unmanned aerial vehicle and send them to the array surface beam signal amplitude and phase consistency calibration unit for calibration, so as to realize the consistency correction of the phases and amplitudes of the beam signals of all array surfaces; H is the distance between the unmanned aerial vehicle and the multi-surface phased array antenna system.

[0030] Optionally, the expression of the far field distance of the multi-surface phased array antenna system is:

[0031] wherein, is the far field distance of the multi-surface phased array antenna system, is the signal frequency, is the width of the multi-surface phased array antenna system, and c is the speed of light.

[0032] Optionally, the consistency correction of the phases and amplitudes of the beam signals of all array surfaces comprises: The array beam signal amplitude and phase consistency calibration unit is added in the beam forming unit of the multi-faceted phased array antenna system; each signal amplitude and phase consistency calibration unit in the array beam signal amplitude and phase consistency calibration unit takes the downlink beam signal received by one array surface of the multi-faceted phased array antenna system as a reference, respectively compares the amplitude and phase differences between the downlink beam signals received by all array surfaces of the multi-faceted phased array antenna system except the array surface and the downlink beam signal received by the array surface, and obtains the phase compensation value and the amplitude compensation value of the downlink beam signal of each array surface except the array surface; The phase compensation value and the amplitude compensation value of each array surface of the multi-faceted phased array antenna system are used to compensate the amplitude and phase of the downlink beam signal of the corresponding array surface, so as to complete the array element amplitude and phase consistency calibration of each array surface of the multi-faceted phased array antenna system, and finally realize the full-space continuous wave tracking and control of the target of the multi-faceted phased array antenna system.

[0033] Optionally, the respective comparison of the amplitude and phase differences between the downlink beam signals received by all array surfaces of the multi-faceted phased array antenna system except the array surface and the downlink beam signal received by the array surface, and the obtaining of the phase compensation value and the amplitude compensation value of the downlink beam signal of each array surface except the array surface, comprise: The amplitude of the downlink beam signal received by each array surface except the array surface is subtracted from the amplitude of the downlink beam signal received by the array surface, and the absolute value of the difference is the amplitude compensation value of the downlink beam signal of the corresponding array surface; The phase of the downlink beam signal received by each array surface except the array surface is subtracted from the phase of the downlink beam signal received by the array surface, and the absolute value of the difference is the phase compensation value of the downlink beam signal of the corresponding array surface.

[0034] The application also provides an embodiment of a multi-faceted phased array antenna system, which is composed of a plurality of independent planar phased arrays; each planar phased array comprises a beam forming unit; the beam forming unit comprises an array beam signal amplitude and phase consistency calibration unit.

[0035] Optionally, the array beam signal amplitude and phase consistency calibration unit comprises a plurality of signal amplitude and phase consistency calibration units, each signal amplitude and phase consistency calibration unit is used for comparing the downlink beam signal received by each array surface of the multi-faceted phased array antenna system with the downlink beam signal received by a designated array surface, and outputting the amplitude compensation value and the phase compensation value of the downlink beam signal of each array surface; the designated array surface is any array surface in the multi-faceted phased array antenna system.

[0036] Optionally, the total number of signal amplitude and phase consistency calibration units in the inter-array beam signal amplitude and phase consistency calibration unit is equal to the total number of arrays in the multi-array phased array antenna system.

[0037] Optionally, each planar phased array covers a space domain, the plurality of independent planar phased arrays cover the entire space domain of the multi-array phased array antenna system, and each planar phased array is an array.

[0038] Optionally, each array in the multi-array phased array antenna system is at an angle with the ground and faces in a direction of the multi-array phased array antenna system, and each array is capable of tracking and controlling a space target in the space domain covered by the array; when the space target is in the space domain covered by each array, the space target is tracked and controlled by the corresponding array.

[0039] For ease of understanding, a more specific embodiment is provided in the present application: Referring to Figure 1 . The multi-array phased array antenna is composed of a plurality of planar phased array antennas, each planar phased array antenna is independently arranged, each planar phased array antenna is responsible for a space region, and the entire space domain of the antenna system can be covered by the combination of all the plurality of planar phased array antennas. The most common multi-array phased array antenna system is a four-array phased array antenna. As shown in Figure 1 , the four-array phased array antenna system is composed of array A, array B, array C and array D four planar phased arrays. After the array element amplitude and phase characteristics calibration of each planar phased array antenna is completed, each planar phased array can realize beam synthesis on a space target and complete tracking and control of the space target. Each planar phased array antenna is responsible for 1 / 4 of the space domain, and the four planar phased arrays can cover the entire space domain of the antenna system. When a target enters the space domain range of the antenna system, the antenna system controls the corresponding array to form a signal beam to track and control the target according to the array coverage area where the target is located. And with the movement of the space target, when the target leaves one array coverage area and enters another array coverage area, the antenna system correspondingly switches the tracking and control of the space target to the corresponding another array.

[0040] Referring to Figure 2 . If calibration of the entire antenna system is required, the distance between the calibration signal source and the antenna system must satisfy the far field condition, and in the case of satisfying the far field condition, the signal transmitted between the calibration signal source and the antenna can be considered as a parallel wave. As shown in Figure 2 , for the four planar phased array antenna system composed of array A, array B, array C and array D, the distance of the antenna far field condition is calculated. The formula is shown in the above-mentioned formula (1).

[0041] For example, for the four planar phased array antenna system composed of array A, array B, array C and array D, the distance A four-sided phased array antenna system with a length of 10 meters, assuming its signal frequency is . The far-field condition of this antenna can be obtained by applying formula (1) as follows:

[0042] That is, for a four-sided phased array antenna system with a length of 10 meters, the signal frequency is 2 GHz, and the far-field distance is 4.17 km, the signal source must be located at a distance greater than 4.17 km from the antenna system.

[0043] Referring to Figure 3 and Figure 4 , according to the above Figure 1 , when a space target enters from one array coverage area to another array coverage area, the multi-sided phased array antenna system needs to switch the array beam for tracking and control accordingly. Since each array of the multi-sided phased array antenna system is independent, there is a certain difference in the signal beams formed by each array, so when the signal beams of each array are switched, the phase and amplitude of the beam signals will jump to a certain extent, so the antenna system cannot complete the full-space continuous beam tracking and control of the space target. Therefore, the amplitude and phase of the beam signals between the arrays of the multi-sided array antenna need to be calibrated. As shown in Figure 3 , for a four-sided phased array antenna system, a calibration signal source can be carried by an unmanned aerial vehicle, and the unmanned aerial vehicle is positioned at a height of H on the central axis of the antenna system, where H is greater than the far-field distance of the antenna system. At this time, the four antenna arrays can simultaneously receive the calibration signal of the unmanned aerial vehicle, so the phase and amplitude of the beam signals of the four antenna arrays can be uniformly corrected. As shown in Figure 4 , array A, array B, array C, and array D simultaneously form signal beams to the unmanned aerial vehicle and simultaneously send the received calibration signal of the unmanned aerial vehicle to the inter-array beam signal amplitude and phase uniformity calibration unit for calibration.

[0044] Referring to Figure 5 . As shown in Figure 5 , an inter-array beam signal amplitude and phase uniformity calibration unit is added in the beam forming unit of the antenna system. When the antenna system is calibrated using an unmanned aerial vehicle, the beam signals of the calibration unmanned aerial vehicle received by the four arrays are simultaneously sent to the inter-array beam signal amplitude and phase uniformity calibration unit. The inter-array beam signal amplitude and phase uniformity calibration unit contains three signal amplitude and phase uniformity calibration units, and each signal amplitude and phase uniformity calibration unit takes the beam signal of array A as a reference to compare the amplitude and phase differences between the beam signals of array B, array C, and array D and the beam signal of array A, respectively, to obtain the phase compensation value and the amplitude compensation value of the beam signal of array B; the phase compensation value and the amplitude compensation value ​; phase compensation value of the array D beam signal and the amplitude compensation value Finally, the phase and amplitude of each array beam signal are compensated using the phase and amplitude compensation values, and the goal of full-space continuous wave tracking and control of the antenna system is ultimately achieved.

[0045] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application and not to limit them. Although the present application has been described in detail with reference to the above embodiments, those skilled in the art should understand that the specific embodiments of the present application can still be modified or replaced equivalently without departing from the spirit and scope of the present application, and any modification or equivalent replacement thereof should be covered within the protection scope of the claims of the present application.

Claims

1. A method for calibrating the amplitude and phase consistency between arrays, applied to a multi-surface phased array antenna system, characterized in that, The application relates to a multi-surface phased array antenna system. The amplitude and phase of downlink beam signals between adjacent surfaces of the multi-surface phased array antenna system are calibrated to ensure the continuity of the amplitude and phase of the beam signals when the adjacent surfaces of the multi-surface phased array antenna system switch; the downlink beam signals are calibration signals emitted by a calibration signal source to the surfaces of the multi-surface phased array antenna system; After the amplitude and phase of the beam signals between the adjacent surfaces of the multi-surface phased array antenna system are calibrated, each surface of the multi-surface phased array antenna system forms a beam to track and control a space target, so that the multi-surface phased array antenna system continuously tracks and controls the space target in the full airspace.

2. The method of interarray amplitude and phase consistency calibration according to claim 1, wherein, The calibration of the amplitude and phase of the downlink beam signals between the adjacent surfaces of the multi-surface phased array antenna system comprises: An unmanned aerial vehicle is used to carry the calibration signal source, and the unmanned aerial vehicle is positioned at a position with a height of H on the central axis of the multi-surface phased array antenna system; H is greater than the far field distance of the multi-surface phased array antenna system; When the calibration signal source of the unmanned aerial vehicle is used to calibrate all the surfaces of the multi-surface phased array antenna system, all the surfaces of the multi-surface phased array antenna system simultaneously form signal beams to the unmanned aerial vehicle, simultaneously receive the calibration signals emitted by the calibration signal source of the unmanned aerial vehicle and send the calibration signals to the inter-surface beam signal amplitude and phase consistency calibration unit for calibration, so as to realize the consistency correction of the phase and amplitude of the beam signals of all the surfaces; H is the distance between the unmanned aerial vehicle and the multi-surface phased array antenna system.

3. The method of interarray amplitude and phase consistency calibration according to claim 2, wherein, The expression of the far field distance of the multi-surface phased array antenna system is: wherein, D is the far field distance of the multi-faceted phased array antenna system, f is the signal frequency, W is the width of the multi-faceted phased array antenna system, and c is the speed of light.

4. The method of interarray amplitude and phase consistency calibration according to claim 2, wherein, The consistency correction of the phase and amplitude of the beam signals of all the surfaces comprises: An inter-surface beam signal amplitude and phase consistency calibration unit is added in the beam forming unit of the multi-surface phased array antenna system; each signal amplitude and phase consistency calibration unit in the inter-surface beam signal amplitude and phase consistency calibration unit takes the downlink beam signal received by one surface of the multi-surface phased array antenna system as a reference, respectively compares the amplitude and phase differences between the downlink beam signals received by all the surfaces of the multi-surface phased array antenna system except the surface and the downlink beam signal received by the surface, and obtains the phase compensation values and the amplitude compensation values of the downlink beam signals of all the surfaces except the surface; The phase compensation values and the amplitude compensation values of all the surfaces of the multi-surface phased array antenna system except the surface are used to compensate the amplitude and phase of the downlink beam signals of the corresponding surfaces, so as to complete the array element amplitude and phase consistency calibration of each surface of the multi-surface phased array antenna system and finally realize the full airspace continuous wave tracking and control of the target by the multi-surface phased array antenna system.

5. The method of interarray amplitude and phase consistency calibration according to claim 4, wherein, The comparison of the amplitude and phase differences between the downlink beam signals received by all the surfaces of the multi-surface phased array antenna system except the surface and the downlink beam signal received by the surface respectively, and the obtaining of the phase compensation values and the amplitude compensation values of the downlink beam signals of all the surfaces except the surface comprise: The absolute value of the difference between the amplitude of the downlink beam signal received by each array except the array and the amplitude of the downlink beam signal received by the array is the amplitude compensation value of the downlink beam signal of the corresponding array. The absolute value of the difference between the phase of the downlink beam signal received by each array except the array and the phase of the downlink beam signal received by the array is the phase compensation value of the downlink beam signal of the corresponding array.

6. A multi-faceted phased array antenna system, comprising: The multi-array phased array antenna system is composed of a plurality of independent planar phased arrays; each planar phased array includes a beam forming unit; the beam forming unit includes an inter-array beam signal amplitude and phase consistency calibration unit.

7. The multi-faceted phased array antenna system of claim 6, wherein, The inter-array beam signal amplitude and phase consistency calibration unit includes a plurality of signal amplitude and phase consistency calibration units, each of which is used to compare the downlink beam signal received by each array of the multi-array phased array antenna system with the downlink beam signal received by a designated array, and output the amplitude compensation value and the phase compensation value of the downlink beam signal of each array; the designated array is any array in the multi-array phased array antenna system.

8. The multi-faceted phased array antenna system of claim 6, wherein, The total number of signal amplitude and phase consistency calibration units in the inter-array beam signal amplitude and phase consistency calibration unit is equal to the total number of arrays in the multi-array phased array antenna system.

9. The multi-faceted phased array antenna system of claim 6, wherein, Each planar phased array covers a space domain, and the plurality of independent planar phased arrays cover the entire space domain of the multi-array phased array antenna system, and each planar phased array is an array.

10. The multi-faceted phased array antenna system of claim 6, wherein, Each array in the multi-array phased array antenna system forms an angle with the ground and faces in all directions of the multi-array phased array antenna system, and each array can track and control a space target in the space domain covered by the array; when the space target is in the space domain covered by each array, the space target is tracked and controlled by the corresponding array. The absolute value of the difference between the amplitude of the downlink beam signal received by each array except the array and the amplitude of the downlink beam signal received by the array is the amplitude compensation value of the downlink beam signal of the corresponding array. The absolute value of the difference between the phase of the downlink beam signal received by each array except the array and the phase of the downlink beam signal received by the array is the phase compensation value of the downlink beam signal of the corresponding array. The multi-array phased array antenna system is composed of a plurality of independent planar phased arrays; each planar phased array includes a beam forming unit; the beam forming unit includes an inter-array beam signal amplitude and phase consistency calibration unit. The inter-array beam signal amplitude and phase consistency calibration unit includes a plurality of signal amplitude and phase consistency calibration units, each of which is used to compare the downlink beam signal received by each array of the multi-array phased array antenna system with the downlink beam signal received by a designated array, and output the amplitude compensation value and the phase compensation value of the downlink beam signal of each array; the designated array is any array in the multi-array phased array antenna system. The total number of signal amplitude and phase consistency calibration units in the inter-array beam signal amplitude and phase consistency calibration unit is equal to the total number of arrays in the multi-array phased array antenna system. Each planar phased array covers a space domain, and the plurality of independent planar phased arrays cover the entire space domain of the multi-array phased array antenna system, and each planar phased array is an array. Each array in the multi-array phased array antenna system forms an angle with the ground and faces in all directions of the multi-array phased array antenna system, and each array can track and control a space target in the space domain covered by the array; when the space target is in the space domain covered by each array, the space target is tracked and controlled by the corresponding array.

Images