Compact range dead zone phase detection error correction method and related equipment

Abstract

The invention provides a compact range dead zone phase detection error correction method and related equipment, and relates to the technical field of compact range detection. The method comprises the following steps: directly acquiring actually measured quiet zone phase distribution data detected by a to-be-corrected compact range quiet zone detection system at at least one probe symmetric point position group in a probe motion scanning plane for the same test signal; scanning frame position deviations corresponding to all probe symmetric point position groups are calculated based on a symmetric detection phase consistency principle to carry out mathematical statistical analysis, so that scanning frame assembly errors of the to-be-corrected compact range quiet zone detection system are determined to carry out compensation correction, and therefore, on the basis of maintaining the original composition of the compact range quiet zone detection system, the scanning frame assembly errors of the to-be-corrected compact range quiet zone detection system can be corrected; by utilizing the characteristic that the phase error takes effect in real time along with the movement of the detection system, the rapid and low-cost automatic calibration and compensation effect of the detection error is realized, and the detection accuracy and the detection precision of compact range quiet zone performance detection operation are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of compact range detection, and in particular, to a method for correcting the phase detection error in the quiet zone of a compact range and related equipment. Background Art

[0002] With the continuous development of science and technology, the compact range technology has received extensive attention in the antenna or radar related industries because it can use a precise reflector (such as a rotating paraboloid) to correct the spherical wave emitted by the feed antenna into a plane wave in the near-field quiet zone, so as to achieve the far-field measurement effect of antenna parameters or radar target scattering characteristics at a short distance.

[0003] It is worth noting that during the performance detection of the compact range quiet zone, the system deployment error of the compact range quiet zone detection system will cause a deviation in the quiet zone phase detection. This deviation will gradually increase beyond the allowable performance index range of the compact range as the frequency of the test signal increases, resulting in serious distortion of the final quiet zone phase detection result. Therefore, how to eliminate the quiet zone phase detection error during the quiet zone phase detection process is an important technical problem that urgently needs to be solved in the current use of compact range technology. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to provide a method for correcting the phase detection error in the quiet zone of a compact range, a compact range quiet zone detection system, and a readable storage medium, which can, on the basis of maintaining the original composition of the compact range quiet zone detection system, utilize the characteristic that the phase error takes effect in real time with the movement of the detection system, automatically separate the quiet zone phase detection error caused by the system deployment error from the measured quiet zone phase distribution data for compensation and correction, so as to achieve the automatic calibration and compensation effect of the detection error quickly and at low cost, thereby effectively improving the detection accuracy and precision of the compact range quiet zone performance detection operation.

[0005] To achieve the above purpose, the technical solutions adopted in the embodiments of the present invention are as follows: In the first aspect, the present invention provides a method for correcting the phase detection error in the quiet zone of a compact range. The method for correcting the phase detection error in the quiet zone of a compact range includes: Obtain the measured quiet zone phase distribution data detected at at least one set of probe symmetric points in the probe movement scanning plane of the compact range quiet zone detection system to be corrected, where the polar coordinate positions of the two probe distribution points included in each set of probe symmetric points are centrosymmetric about the pole position center in the probe movement scanning plane; For each set of probe symmetric points, calculate the position deviation of the scanning frame corresponding to the set of probe symmetric points based on the principle of symmetric detection phase consistency according to the measured quiet zone phase distribution data of the two probe distribution points in the set of probe symmetric points; Perform mathematical statistical analysis on the position deviations of the scanning frame corresponding to each group of symmetric probe points to obtain the assembly error of the scanning frame of the to-be-corrected anechoic chamber quiet zone detection system; Compensate and correct the to-be-corrected anechoic chamber quiet zone detection system according to the assembly error of the scanning frame.

[0006] In an alternative embodiment, for each group of symmetric probe points, the step of calculating the position deviation of the scanning frame corresponding to the group of symmetric probe points based on the principle of symmetric detection phase consistency includes: Calculate the phase difference data between the measured quiet zone phase distribution data of the two probe distribution points in the group of symmetric probe points; Based on the first correlation relationship between the position deviation of the scanning frame, the signal wavelength of the test signal and the first quiet zone phase detection deviation, solve for the position deviation of the scanning frame based on the phase difference data to obtain the position deviation of the scanning frame corresponding to the group of symmetric probe points.

[0007] In an alternative embodiment, the first correlation relationship between the position deviation of the scanning frame, the signal wavelength of the test signal and the first quiet zone phase detection deviation is expressed by the following formula: ; Wherein, represents the polar radius of any probe distribution point in the probe movement scanning plane, represents the position deviation of the scanning frame at this probe distribution point, represents the first quiet zone phase detection deviation caused by the position deviation of the scanning frame during the quiet zone phase detection at this probe distribution point, represents the signal wavelength of the test signal.

[0008] In an alternative embodiment, for any group of symmetric probe points, the position deviation of the scanning frame corresponding to the group of symmetric probe points is calculated by the following equation: ; Wherein, represents the polar radius of the first probe distribution point in the group of symmetric probe points in the probe movement scanning plane, represents the polar radius of the second probe distribution point in the group of symmetric probe points in the probe movement scanning plane, represents the polar angle of the first probe distribution point in the probe movement scanning plane, represents the polar angle of the second probe distribution point in the probe movement scanning plane, represents the measured quiet zone phase distribution data of the first probe distribution point, Measured quiet zone phase distribution data for representing the distribution points of the second probe For representing the position deviation of the scanning frame corresponding to the probe symmetric point group For representing the signal wavelength of the test signal, where , .

[0009] In an alternative embodiment, the step of performing mathematical statistical analysis on the position deviations of the scanning frames corresponding to each of the probe symmetric point groups to obtain the scanning frame assembly error of the to-be-corrected anechoic chamber quiet zone detection system includes: Classify the scanning sections of all probe symmetric point groups, and perform weighted average operations on the position deviations of the scanning frames corresponding to each of the probe symmetric point groups belonging to the same scanning section to obtain the fitting values of the scanning frame assembly errors of at least one scanning section, where each scanning section is perpendicular to the probe motion scanning plane; Perform arithmetic average operations on the fitting values of the scanning frame assembly errors of all scanning sections to obtain the scanning frame assembly error of the to-be-corrected anechoic chamber quiet zone detection system.

[0010] In an alternative embodiment, the anechoic chamber quiet zone phase detection error correction method further includes: Obtain the actual quiet zone phase distribution data detected for the test signal at multiple detection points in the quiet zone phase detection plane of the to-be-corrected anechoic chamber quiet zone detection system after compensating for the scanning frame assembly error; According to the off-axis deviation and roll deviation of the quiet zone phase detection plane relative to the equal-phase surface of the parallel wave, and the second correlation relationship between the signal wavelength of the test signal and the second quiet zone phase detection deviation, based on the actual quiet zone phase distribution data of each of the multiple detection points, with the goal of minimizing the quiet zone phase detection noise associated with the second quiet zone phase detection deviation, solve for the off-axis deviation of the detection plane and the roll deviation of the detection plane of the to-be-corrected anechoic chamber quiet zone detection system; Compensate and correct the to-be-corrected anechoic chamber quiet zone detection system according to the off-axis deviation of the detection plane and the roll deviation of the detection plane.

[0011] In an alternative embodiment, the second correlation relationship between the off-axis deviation and roll deviation of the quiet zone phase detection plane relative to the equal-phase surface of the parallel wave, and the signal wavelength of the test signal and the second quiet zone phase detection deviation is represented by the following equation: ; Wherein, For representing the polar radius of the probe distribution point mapped by any one detection point in the probe motion scanning plane The polar angle used to represent the mapped probe distribution point of the detection point in the probe movement scanning plane The abscissa value of the mapped probe distribution point of the detection point in the two-dimensional coordinate system The ordinate value of the mapped probe distribution point of the detection point in the two-dimensional coordinate system Used to represent the off-axis deviation of the static area phase detection plane relative to the parallel wave equiphase surface Used to represent the roll deviation of the static area phase detection plane relative to the parallel wave equiphase surface Used to represent the second static area phase detection deviation jointly caused by the off-axis deviation and the roll deviation at the mapped probe distribution point of the detection point Used to represent the signal wavelength of the test signal

[0012] In an alternative embodiment, the static area phase detection noise associated with the second static area phase detection deviation is represented by the following equation ; Wherein Used to represent the polar radius of the mapped probe distribution point of the th detection point in the probe movement scanning plane The polar angle of the mapped probe distribution point of the th detection point in the probe movement scanning plane The abscissa value of the mapped probe distribution point of the th detection point in the two-dimensional coordinate system The ordinate value of the mapped probe distribution point of the th detection point in the two-dimensional coordinate system Used to represent the off-axis deviation of the static area phase detection plane relative to the parallel wave equiphase surface Used to represent the roll deviation of the static area phase detection plane relative to the parallel wave equiphase surface The actual static area phase distribution data of the th detection point Is a constant Used to represent the static area phase detection noise associated with the second static area phase detection deviation Used to represent the total number of detection points

[0013] Second aspect, the present invention provides a compact range quiet zone detection system, the compact range quiet zone detection system comprising a compact range turntable, a scanning frame, a probe antenna and a vector network analyzer, wherein the scanning frame is mounted on the polarization plane of the compact range turntable, and the probe antenna is mounted on the scanning operation surface of the scanning frame; The vector network analyzer is electrically connected to the compact range turntable and the scanning frame respectively, and is used for controlling the compact range turntable to drive the scanning frame to rotate, and / or controlling the scanning frame to adjust the detection position of the probe antenna on the scanning operation surface, wherein the vector network analyzer can send a test signal to the compact range reflector through a feed antenna, so that the compact range reflector reflects to form a test quiet zone, and the probe antenna collects the plane wave signal from the test quiet zone; The vector network analyzer is also electrically connected to the probe antenna, and is used for receiving the plane wave signal collected by the probe antenna, and detecting the quiet zone phase distribution data of the test signal based on the plane wave signal; The vector network analyzer also stores a computer program and can run the computer program to implement the compact range quiet zone phase detection error correction method described in any one of the foregoing embodiments.

[0014] Third aspect, the present invention provides a readable storage medium, on which a computer program is stored. When the computer program is executed by a compact range quiet zone detection system, the compact range quiet zone phase detection error correction method described in any one of the foregoing embodiments is implemented.

[0015] In this case, the beneficial effects of the embodiments of the present invention may include the following: The present invention directly obtains the measured quiet zone phase distribution data detected at at least one probe symmetric point group in the probe movement scanning plane of the compact range quiet zone detection system to be corrected for the same test signal, and for each probe symmetric point group, based on the measured quiet zone phase distribution data of the two probe distribution points in the probe symmetric point group respectively, calculates the scanning frame position deviation corresponding to the probe symmetric point group according to the symmetric detection phase consistency principle, so as to perform mathematical statistical analysis by combining the scanning frame position deviations of all probe symmetric point groups respectively to determine the scanning frame assembly error of the compact range quiet zone detection system to be corrected for compensation and correction. Thus, on the basis of maintaining the original composition of the compact range quiet zone detection system, by using the characteristic that the phase error takes effect in real time with the movement of the detection system, the quiet zone phase detection error caused by the system deployment error (including the scanning frame assembly error) is automatically separated from the measured quiet zone phase distribution data for compensation and correction, so as to achieve the automatic calibration and compensation effect of the detection error quickly and at low cost, and improve the detection accuracy and detection precision of the compact range quiet zone performance detection operation.

[0016] To make the above objects, features, and advantages of the present invention more obvious and understandable, the following provides preferred embodiments in conjunction with the accompanying drawings and describes them in detail as follows. Description of the Drawings

[0017] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0018] Figure 1 Schematic diagram of the deployment error generation of the anechoic chamber quiet zone detection system provided by the embodiment of the present invention; Figure 2 For Figure 1 Schematic diagram of the probe movement scanning plane of the probe antenna on the scanning frame in [the figure]; Figure 3 One of the flow schematic diagrams of the method for correcting the phase detection error of the anechoic chamber quiet zone provided by the embodiment of the present invention; Figure 4 Schematic diagram of the distribution of the scanning frame position deviation of any probe symmetric point group on the 90° (270°) test section; Figure 5 Two of the flow schematic diagrams of the method for correcting the phase detection error of the anechoic chamber quiet zone provided by the embodiment of the present invention; Figure 6 Schematic diagram of the quiet zone phase distribution of the anechoic chamber quiet zone detection system provided by the embodiment of the present invention for the 90 GHz test signal before phase detection error correction; Figure 7 Schematic diagram of the quiet zone phase distribution of the anechoic chamber quiet zone detection system provided by the embodiment of the present invention for the 90 GHz test signal after phase detection error correction.

[0019] Icon: 10 - Anechoic chamber quiet zone detection system; 11 - Vector network analyzer; 12 - Anechoic chamber turntable; 13 - Scanning frame; 14 - Probe antenna. Detailed Embodiments

[0020] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. Usually, the components of the embodiments of the present invention described and shown in the accompanying drawings here can be arranged and designed in various different configurations.

[0021] Accordingly, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. 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 scope of protection of the present invention.

[0022] It should be noted that like reference numerals and letters denote like items in the following drawings. Therefore, once an item is defined in one drawing, it does not require further definition and explanation in subsequent drawings.

[0023] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings, or the orientation or positional relationships in which the inventive product is customarily placed during use, or the orientation or positional relationships commonly understood by those skilled in the art. These are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present invention.

[0024] In the description of the present invention, it should also be noted that, unless otherwise clearly defined and limited, the terms "set", "installed", "connected", "coupled" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] In addition, in the description of the present invention, it can be understood that relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising a..." does not exclude the presence of additional identical elements in the process, method, article or device comprising the element. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] Through painstaking research, the inventors found that the existing solutions for eliminating the phase detection error in the quiet zone mainly measure and compensate for the installation position error of the scanning frame and the position error of the phase detection plane by additionally adding a position measuring instrument (such as a laser tracker) on the basis of the original components of the quiet zone detection system in the compact range. However, it should be noted that the cost of the position measuring instrument is relatively high, and its operation complexity and error detection time consumption during use are also relatively high. At the same time, the presence of the position measuring instrument itself will also bring new errors to the quiet zone detection system in the compact range, making it difficult to achieve a high-precision detection effect for the quiet zone performance in the compact range.

[0027] In this case, to solve the above problems, the embodiments of the present invention provide a method for correcting the phase detection error in the quiet zone of a compact range, a quiet zone detection system in a compact range, and a readable storage medium. On the basis of maintaining the original components of the quiet zone detection system in the compact range, by utilizing the characteristic that the phase error takes effect in real time with the movement of the detection system, the quiet zone phase detection error caused by system deployment errors (including the assembly (installation position) error of the scanning frame and the axial error of the phase detection plane) is automatically separated from the measured quiet zone phase distribution data for compensation and correction, so as to achieve a fast and low-cost automatic calibration and compensation effect for the detection error, thereby effectively improving the detection accuracy and detection precision of the quiet zone performance detection operation in the compact range.

[0028] The following will describe in detail some embodiments of the present invention with reference to the accompanying drawings. Without conflict, the following embodiments and the features in the embodiments can be combined with each other.

[0029] Please refer to Figure 1 and Figure 2 where Figure 1 is a schematic diagram of the generation of deployment errors of the quiet zone detection system 10 provided by the embodiments of the present invention, Figure 2 is Figure 1 a schematic diagram of the probe movement scanning plane of the probe antenna 14 on the scanning frame 13 in . In the embodiments of the present invention, the quiet zone detection system 10 in the compact range may include a vector network analyzer 11, a compact range turntable 12, a scanning frame 13, and a probe antenna 14. The scanning frame 13 is installed on the polarization disk surface of the compact range turntable 12, the probe antenna 14 is installed on the scanning working surface of the scanning frame 13, both the polarization disk surface and the scanning working surface face the compact range reflector, and the probe antenna 14 also faces the compact range reflector.

[0030] In an embodiment of the present invention, the vector network analyzer 11 is electrically connected to the compact range turntable 12 and the scanning frame 13 respectively, and is used to control the compact range turntable 12 to drive the scanning frame 13 to rotate, and / or control the scanning frame 13 to adjust the detection position of the probe antenna 14 on the scanning working surface. The vector network analyzer 11 can send a test signal with an arbitrary signal frequency (such as 90 GHz) to the compact range reflector through the feed antenna, so that the compact range reflector reflects to form a test quiet zone, and the probe antenna 14 collects the plane wave signal from the test quiet zone.

[0031] During this process, the polarization mode of the probe antenna 14 is consistent with that of the feed antenna; the scanning frame 13 is a long strip structure, and the scanning frame 13 can drive the probe antenna 14 to move along the length extension direction of the scanning frame 13 through a slider to adjust the detection position of the probe antenna 14 on the scanning working surface; for the probe antenna 14, the probe distribution points in the probe motion scanning plane where it is located on the scanning working surface can be described by a polar coordinate system. The pole position of this polar coordinate system is represented by the central position of the scanning working surface. The reachable positions of the scanning frame 13 driven by the compact range turntable 12 can be characterized by the positions of 4 orange strip structures as shown in Figure 2 Among them, each orange strip structure position corresponds to two polar angles separately in the polar coordinate system (the angle difference between these two polar angles is 180°). If the maximum moving stroke of the probe antenna 14 on the scanning frame 13 is represented by And the polar radius at the pole position is set to 0, the polar radius range of any probe distribution point in the polar coordinate system can be expressed as , and the polar angle range of any probe distribution point in the polar coordinate system can be expressed as .

[0032] In an embodiment of the present invention, the vector network analyzer 11 is also electrically connected to the probe antenna 14, and is used to receive the plane wave signal collected by the probe antenna 14 and detect the quiet zone phase distribution data of the test signal based on the plane wave signal.

[0033] In an embodiment of the present invention, the probe movement scanning plane of the compact range quiet zone detection system 10 in the ideal deployment state is parallel to the polarization disk surface of the compact range turntable 12, and the quiet zone phase detection plane of the compact range quiet zone detection system 10 in the ideal deployment state coincides with the plane wave equal-phase surface. However, it should be noted that when installing the scanning frame 13 onto the polarization disk surface, due to fixture design or other factors, there are often errors in the installation of the scanning frame 13, causing the probe movement scanning plane to deflect relative to the polarization disk surface, thus forming a scanning frame position deviation (i.e., Figure 1 in ), where the scanning frame position deviation is used to characterize the assembly error of the scanning frame; when installing the scanning frame 13 onto the polarization disk surface, due to the gravitational influence of the scanning frame 13 and the probe antenna 14, the compact range turntable 12 will undergo pitch rotation and azimuth rotation, thereby causing the quiet zone phase detection plane to deflect relative to the axis direction of the plane wave equal-phase surface (i.e., Figure 1 the positive direction of the Z-axis of the Cartesian three-dimensional coordinate system XYZ in Figure 1 ), resulting in an off-axis deviation (i.e., in Figure 1 ), and causing the quiet zone phase detection plane to rotate around the axis direction of the plane wave equal-phase surface, forming a roll deviation (i.e., in

[0034] ), and at this time, the combination of the off-axis deviation and the roll deviation characterizes the position error of the phase detection plane. ; wherein, is used to represent the polar radius of any probe distribution point in the probe movement scanning plane, is used to represent the measured quiet zone phase distribution data of this probe distribution point, is used to represent the first quiet zone phase detection deviation caused by the scanning frame position deviation at this probe distribution point, is used to represent the second quiet zone phase detection deviation jointly caused by the off-axis deviation and the roll deviation at this probe distribution point.

[0035] In an embodiment of the present invention, the vector network analyzer 11 may pre-store a specific computer program related to the phase detection error correction function of the anechoic chamber quiet zone, and by running the specific computer program, on the basis of maintaining the original composition of the anechoic chamber quiet zone detection system 10, without the need to additionally equip expensive position measuring instruments, the characteristics that the phase error takes effect in real time as the detection system moves can be directly utilized to automatically separate the quiet zone phase detection error caused by system deployment errors (including scanning frame assembly errors and phase detection plane position errors) from the measured quiet zone phase distribution data of the anechoic chamber quiet zone detection system 10 for compensation and correction, so as to achieve a fast and low-cost automatic calibration and compensation effect of the detection error, thereby effectively improving the detection accuracy and detection precision of the anechoic chamber quiet zone performance detection operation.

[0036] It can be understood that Figure 1 The block diagram shown is only a schematic diagram of the system composition of the anechoic chamber quiet zone detection system 10, and the anechoic chamber quiet zone detection system 10 may further include more Figure 1 or fewer components than those shown, or have a different configuration from Figure 1 that shown. Figure 1 Each component shown can be implemented by hardware, software or a combination thereof.

[0037] In the present invention, to ensure that the anechoic chamber quiet zone detection system 10 can, on the basis of maintaining the original composition, automatically and quickly separate the quiet zone phase detection error caused by system deployment errors (including scanning frame assembly errors and phase detection plane position errors) from the measured quiet zone phase distribution data for compensation and correction, so as to achieve a fast and low-cost automatic calibration and compensation effect of the detection error and improve the detection accuracy and detection precision of the anechoic chamber quiet zone performance detection operation, an embodiment of the present invention provides a method for correcting the phase detection error of the anechoic chamber quiet zone applied to the above-mentioned anechoic chamber quiet zone detection system 10 to achieve the foregoing purpose. The method for correcting the phase detection error of the anechoic chamber quiet zone provided by the present invention will be described in detail below.

[0038] Please refer to Figure 3 , Figure 3 which is one of the flow schematic diagrams of the method for correcting the phase detection error of the anechoic chamber quiet zone provided by an embodiment of the present invention. In an embodiment of the present invention, the method for correcting the phase detection error of the anechoic chamber quiet zone may include steps 210 to 240.

[0039] Step 210, obtaining measured quiet zone phase distribution data detected at at least one set of probe symmetric points in the probe movement scanning plane of the anechoic chamber quiet zone detection system to be corrected for the same test signal.

[0040] In this embodiment, the two probe distribution points included in each probe symmetric point group are centrosymmetric about the pole position center in the polar coordinate positions of the probe movement scanning plane. Combining Figure 2 and Figure 4 for example: The test section with a polar angle Phi of 90° in polar coordinates (i.e., the plane perpendicular to the probe movement scanning plane and passing through the pole position) and the test section with a polar angle Phi of 270° in polar coordinates essentially belong to the same scanning section. The maximum moving stroke of the scanning frame 13 in the test section with a polar angle Phi of 90° or 270° is the true distance value between point A and point B. Among them, Figure 4 the red-filled triangle in the left subfigure of Figure 4 can represent a probe distribution point with a polar angle Phi of 90°, and Figure 2 the red-filled triangle in the right subfigure of can represent another probe distribution point with a polar angle Phi of 270°. If the center position of the scanning frame 13 in

[0041] is used as the pole position of the polar coordinate system, then one of the polar radii of these two probe distribution points is positive and the other is negative, but the absolute values of the polar radii of these two probe distribution points are the same. At this time, these two probe distribution points can form a probe symmetric point group, and the polar coordinate positions of these two probe distribution points in the polar coordinate system of the probe movement scanning plane are centrosymmetric about the pole position (that is, the difference between the polar angles of these two probe distribution points is 180°, and the polar radii of these two probe distribution points are opposite to each other). And in the test section with a polar angle Phi of 90° or 270°, the scanning frame position deviation

[0042] is always in effect.

[0041] Step 220: For each probe symmetric point group, based on the measured static region phase distribution data of the two probe distribution points in the probe symmetric point group, calculate the scanning frame position deviation corresponding to the probe symmetric point group based on the principle of symmetric detection phase consistency.

[0042] In this embodiment, the principle of symmetric detection phase consistency can be described as "the ideal static region phase distribution data of the two probe distribution points in the same probe symmetric point group are consistent, and the second static region phase detection deviations of the two probe distribution points in the same probe symmetric point group are consistent". The first correlation relationship between the scanning frame position deviation corresponding to a single probe distribution point, the signal wavelength of the test signal, and the first static region phase detection deviation can be expressed by the following formula: ; Among them, is used to represent the polar radius of any probe distribution point in the probe movement scanning plane, is used to represent the scanning frame position deviation at this probe distribution point, The first dead zone phase detection deviation caused by the position deviation of the scanning frame for representing the probe distribution points during the dead zone phase detection, used to represent the signal wavelength of the test signal.

[0043] Therefore, for any probe symmetric point group, the first dead zone phase detection deviations of the two probe distribution points included in the probe symmetric point group are opposite to each other.

[0044] On this basis, for each probe symmetric point group, the step "calculating the position deviation of the scanning frame corresponding to the probe symmetric point group based on the principle of symmetry detection phase consistency" in step 220 may include: Calculating the phase difference data between the measured dead zone phase distribution data of the two probe distribution points in the probe symmetric point group respectively; Based on the first correlation relationship among the position deviation of the scanning frame, the signal wavelength of the test signal, and the first dead zone phase detection deviation, solving for the position deviation of the scanning frame based on the phase difference data to obtain the position deviation of the scanning frame corresponding to the probe symmetric point group.

[0045] During this process, for any probe symmetric point group, the position deviation of the scanning frame corresponding to the probe symmetric point group is calculated using the following equation: ; where, used to represent the polar radius of the first probe distribution point in the probe motion scanning plane of the probe symmetric point group, used to represent the polar radius of the second probe distribution point in the probe motion scanning plane of the probe symmetric point group, used to represent the polar angle of the first probe distribution point in the probe motion scanning plane, used to represent the polar angle of the second probe distribution point in the probe motion scanning plane, used to represent the measured dead zone phase distribution data of the first probe distribution point, used to represent the measured dead zone phase distribution data of the second probe distribution point, used to represent the position deviation of the scanning frame corresponding to the probe symmetric point group, used to represent the signal wavelength of the test signal, where ; ;

[0046] Step 230, performing mathematical statistical analysis on the position deviations of the scanning frames corresponding to all the probe symmetric point groups respectively to obtain the scanning frame assembly error of the dead zone detection system of the compact range to be corrected.

[0047] In this embodiment, when only the measured quiet zone phase distribution data of one probe symmetric point group is obtained in step 210, the probe symmetric point group can be directly used as the scanning frame assembly error of the to-be-corrected compact range quiet zone detection system; when the measured quiet zone phase distribution data of multiple probe symmetric point groups is obtained in step S210, the scanning frame assembly error of the to-be-corrected compact range quiet zone detection system can be determined by performing data fitting on the scanning frame position deviations of each of the multiple probe symmetric point groups, so as to reduce random errors and improve the subsequent phase detection error correction effect. Among them, the above data fitting operations may include, but are not limited to: linear regression operations, arithmetic mean operations, weighted mean operations, etc.

[0048] In an implementation manner of this embodiment, when the measured quiet zone phase distribution data of multiple probe symmetric point groups is obtained in step S210, step 230 is implemented by collaborating arithmetic mean operation and weighted mean operation. At this time, step 230 may include: Classify the scanning sections of all probe symmetric point groups, and perform weighted mean operation on the scanning frame position deviations of all probe symmetric point groups belonging to the same scanning section, to obtain the fitting values of the scanning frame assembly errors of at least one scanning section, where each scanning section is perpendicular to the probe movement scanning plane and passes through the pole position; Perform arithmetic mean operation on the fitting values of the scanning frame assembly errors of all scanning sections, to obtain the scanning frame assembly error of the to-be-corrected compact range quiet zone detection system.

[0049] Among them, the weight values of multiple probe symmetric point groups belonging to the same scanning section in the weighted mean operation process may be the same or different from each other. For example, if the weight values of multiple probe symmetric point groups belonging to the same scanning section are kept consistent, the corresponding weighted mean operation can be regarded as an arithmetic mean operation; the farther the probe symmetric point group belonging to the same scanning section is from the pole position, the greater the weight value of the corresponding probe symmetric point group.

[0050] Step 240, compensate and correct the to-be-corrected compact range quiet zone detection system according to the scanning frame assembly error.

[0051] In this embodiment, when the to-be-corrected anechoic chamber quiet zone detection system performs compensation and correction according to the solved scanning frame assembly error, the scanning frame assembly error can be substituted into the above first correlation relationship to solve the first anechoic chamber phase detection deviation caused by the scanning frame assembly error during the anechoic chamber phase detection process. Then, by performing a subtraction operation on the measured anechoic chamber phase distribution data of the to-be-corrected anechoic chamber quiet zone detection system and the foregoing first anechoic chamber phase detection deviation, the data compensation operation for the to-be-corrected anechoic chamber quiet zone detection system is completed; alternatively, the vector network analyzer 11 in the to-be-corrected anechoic chamber quiet zone detection system can be driven to control the corresponding scanning frame 13 to adjust its relative position with respect to the polarization disk surface to eliminate the scanning frame assembly error, thereby completing the physical compensation operation for the to-be-corrected anechoic chamber quiet zone detection system.

[0052] During this process, it can be understood that to further improve the phase detection error correction effect, after steps 210 to 230 are executed for the test signal of a certain signal frequency to determine the scanning frame assembly error of the to-be-corrected anechoic chamber quiet zone detection system for this signal frequency, other signal frequencies can be replaced and the above steps 210 to 230 can be re-executed to determine the scanning frame assembly error of the to-be-corrected anechoic chamber quiet zone detection system for the other signal frequencies. Then, by performing an arithmetic mean operation on the scanning frame assembly errors of different signal frequencies respectively, the comprehensive scanning frame assembly error of the to-be-corrected anechoic chamber quiet zone detection system during the anechoic chamber phase detection process can be obtained, so as to perform compensation and correction on the to-be-corrected anechoic chamber quiet zone detection system based on the comprehensive scanning frame assembly error.

[0053] Therefore, the present invention can, by executing the above steps 210 to 240, on the basis of maintaining the original composition of the anechoic chamber quiet zone detection system 10, automatically and quickly separate the anechoic chamber phase detection error caused by the scanning frame assembly error from the measured anechoic chamber phase distribution data for compensation and correction, so as to achieve the automatic calibration and compensation effect of fast and low-cost detection errors, without the need to additionally equip high-cost position measurement instruments, thereby effectively improving the detection accuracy and detection precision of the anechoic chamber quiet zone performance detection operation.

[0054] Optionally, please refer to Figure 5 , Figure 5 is the second flowchart of the method for correcting the anechoic chamber quiet zone phase detection error provided by the embodiment of the present invention. In the embodiment of the present invention, compared with the method for correcting the anechoic chamber quiet zone phase detection error shown in Figure 3 Figure 5The method for correcting the phase detection error in the quiet zone of the compact range as shown may further include steps 250 to 270, so as to directly and automatically separate the quiet zone phase detection error caused by the position error of the phase detection plane (including the off-axis deviation and rolling deviation of the quiet zone phase detection plane relative to the equal-phase surface of the parallel wave) from the actual quiet zone phase distribution data detected by the compact range quiet zone detection system 10 on the basis of completing the compensation operation for the scanning frame assembly error of the compact range quiet zone detection system 10, and perform compensation and correction, so as to achieve the automatic calibration and compensation effect of fast and low-cost detection error, and improve the detection accuracy and detection precision of the performance detection operation of the compact range quiet zone.

[0055] Step 250: Obtain the actual quiet zone phase distribution data detected by the compact range quiet zone detection system to be corrected after compensating for the scanning frame assembly error at multiple detection points in the quiet zone phase detection plane for the test signal respectively.

[0056] In this embodiment, the test signal in step S250 has the same signal frequency as the test signal in step 210 above; the actual quiet zone phase distribution data detected by any one detection point for the test signal can be regarded as the measured quiet zone phase distribution data of this detection point for the test signal minus the first quiet zone phase detection deviation adapted to the test signal.

[0057] Step S260: According to the second correlation relationship between the off-axis deviation and rolling deviation of the quiet zone phase detection plane relative to the equal-phase surface of the parallel wave, the signal wavelength of the test signal and the second quiet zone phase detection deviation, based on the actual quiet zone phase distribution data of each of the multiple detection points, with the goal of minimizing the quiet zone phase detection noise associated with the second quiet zone phase detection deviation, solve the off-axis deviation of the detection plane and the rolling deviation of the detection plane of the compact range quiet zone detection system to be corrected.

[0058] In this embodiment, the second correlation relationship between the off-axis deviation and rolling deviation of the quiet zone phase detection plane relative to the equal-phase surface of the parallel wave, the signal wavelength of the test signal and the second quiet zone phase detection deviation is expressed by the following equation: ; Among them, is used to represent the polar radius of the probe distribution point mapped by any one detection point in the probe movement scanning plane, is used to represent the polar angle of the probe distribution point mapped by this detection point in the probe movement scanning plane, is used to represent the abscissa value of the probe distribution point mapped by this detection point in the two-dimensional coordinate system, is used to represent the ordinate value of the probe distribution point mapped by this detection point in the two-dimensional coordinate system, For representing the off-axis deviation of the static region phase detection plane relative to the equiphase plane of parallel waves, For representing the roll deviation of the static region phase detection plane relative to the equiphase plane of parallel waves, For representing the second static region phase detection deviation jointly induced by the off-axis deviation and the roll deviation at the probe distribution position mapped at the detection point position, For representing the signal wavelength of the test signal. Among them, the origin position of the two-dimensional coordinate system is the same as the pole position of the above polar coordinate system.

[0059] The static region phase detection noise associated with the second static region phase detection deviation is represented by the following equation: ; Among them, For representing the polar radius of the probe distribution position mapped by the th detection point position in the probe movement scanning plane, For representing the polar angle of the probe distribution position mapped by the th detection point position in the probe movement scanning plane, For representing the abscissa value of the probe distribution position mapped by the th detection point position in the two-dimensional coordinate system, For representing the ordinate value of the probe distribution position mapped by the th detection point position in the two-dimensional coordinate system, For representing the off-axis deviation of the static region phase detection plane relative to the equiphase plane of parallel waves, For representing the roll deviation of the static region phase detection plane relative to the equiphase plane of parallel waves, For representing the actual static region phase distribution data of the th detection point position, For representing the signal wavelength of the test signal, is a constant, For representing the static region phase detection noise associated with the second static region phase detection deviation,

[0060] Thus, based on the above static region phase detection noise equation, the present invention can solve the off-axis deviation of the detection plane and the roll deviation of the detection plane during the static region phase detection of the to-be-corrected compact range static region detection system, that is, obtain the phase detection plane position error of the to-be-corrected compact range static region detection system.

[0061] Step 270: Compensate and correct the to-be-corrected anechoic chamber quiet zone detection system according to the off-axis deviation of the detection plane and the rolling deviation of the detection plane.

[0062] In this embodiment, when the to-be-corrected anechoic chamber quiet zone detection system performs compensation and correction according to the solved off-axis deviation of the detection plane and the rolling deviation of the detection plane, the off-axis deviation of the detection plane and the rolling deviation of the detection plane can be substituted into the above second correlation relationship to solve the second quiet zone phase detection deviation generated during the corresponding quiet zone phase detection process. Then, by performing a subtraction operation on the actual quiet zone phase distribution data of the to-be-corrected anechoic chamber quiet zone detection system and the foregoing second quiet zone phase detection deviation, the data compensation operation for the to-be-corrected anechoic chamber quiet zone detection system can be completed; alternatively, by driving the vector network analyzer 11 in the to-be-corrected anechoic chamber quiet zone detection system to control the corresponding anechoic chamber turntable 12 to adjust its own turntable off-axis angle and turntable rolling angle, the phase detection plane position error (including the off-axis deviation of the detection plane and the rolling deviation of the detection plane) can be eliminated, and the physical compensation operation for the to-be-corrected anechoic chamber quiet zone detection system can be completed.

[0063] Therefore, the present invention can, by executing the above Step 250 to Step 270, on the basis of completing the compensation operation for the scanning frame assembly error of the anechoic chamber quiet zone detection system 10, directly and automatically separate the quiet zone phase detection error caused by the phase detection plane position error (including the off-axis deviation and rolling deviation of the quiet zone phase detection plane relative to the equal-phase surface of the parallel wave) from the actual quiet zone phase distribution data detected by the anechoic chamber quiet zone detection system 10 for compensation and correction, so as to achieve the automatic calibration and compensation effect of the detection error quickly and at low cost, without the need to additionally equip expensive position measuring instruments, thereby effectively improving the detection accuracy and detection precision of the anechoic chamber quiet zone performance detection operation.

[0064] The present invention can continuously execute the above Step 210 to Step 240 and the above Step 250 to Step 270 on the to-be-corrected anechoic chamber quiet zone detection system 10, so as to, on the basis of maintaining the original composition of the detection system, utilize the characteristic that the phase error takes effect in real time as the detection system moves, automatically separate the quiet zone phase detection errors caused by different deployment error sources (including the scanning frame assembly error and the phase detection plane position error) from the measured quiet zone phase distribution data for compensation and correction, so as to achieve the automatic calibration and compensation effect of the detection error quickly and at low cost.

[0065] To Figure 6 and Figure 7Taking the schematic diagram of the quiet zone phase distribution detected by the compact range quiet zone detection system 10 shown before and after the phase detection error correction for the 90 GHz test signal as an example: Before the phase detection error correction, the phase fluctuation of the compact range quiet zone detected for the 90 GHz test signal in the horizontal polarization mode of the antenna exceeded 40°. The phase of the compact range quiet zone in the same polar angle Phi state was linearly related to the polar radius of the probe distribution points, corresponding to obvious phase detection distortion in the compact range quiet zone detection system 10. It can be based on Figure 6 the phase detection values of each probe distribution point in the test sections with polar angles Phi = 0° and Phi = 180° in Figure 6 , and use the above steps 220 and 230 to calculate the corresponding scanning frame assembly error = 0.05°. Then, for Figure 6 the phase detection values of each probe distribution point in the test sections with polar angles Phi = 0°, 45°, 90° and 135° in Figure 6 , perform step 240 to compensate for the scanning frame assembly error. Then, perform step 260 on the compensated phase detection values to determine the off-axis deviation = 0.12° of the corresponding detection plane, and the roll deviation = 90° of the corresponding detection plane. Finally, perform detection system compensation according to the off-axis deviation and roll deviation of the detection plane. At this time, the phase fluctuation of the compact range quiet zone detected by the compact range quiet zone detection system 10 for the 90 GHz test signal after the phase detection error correction is within 10°. The phase of the compact range quiet zone in the same polar angle Phi state is no longer linearly related to the polar radius of the probe distribution points, eliminating the phase detection distortion generated by the corresponding compact range quiet zone detection system 10, and the true phase fluctuation of the compact range quiet zone can be accurately obtained.

[0066] In the embodiments provided by the present invention, it should be understood that the disclosed devices and methods can also be implemented in other ways. The device embodiments described above are only illustrative. For example, the flowcharts and block diagrams in the drawings show the possible architectures, functions and operations of the devices, methods and computer program products according to the embodiments of the present invention. In this regard, each block in the flowchart or block diagram may represent a module, a program segment or a part of the code. A module, a program segment or a part of the code contains one or more executable instructions for implementing the specified logical function. It should also be noted that in some alternative implementations, the functions marked in the blocks may occur in a different order than marked in the drawings. For example, two consecutive blocks can actually be executed substantially in parallel, and they can sometimes be executed in the reverse order, depending on the functions involved. It should also be noted that each block in the block diagram and / or flowchart, and the combination of blocks in the block diagram and / or flowchart, can be implemented by a dedicated hardware-based system for performing the specified functions or actions, or can be implemented by a combination of dedicated hardware and computer instructions.

[0067] In addition, each functional module in various embodiments of the present invention may be integrated together to form an independent part, or each module may exist alone, or two or more modules may be integrated to form an independent part. If the various functions provided by the present invention are implemented in the form of software functional modules and sold or used as an independent product, they may be stored in a storage medium. Based on such an understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or a part of the technical solution, may be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for causing the compact range quiet zone detection system 10 to execute all or part of the steps of the methods described in various embodiments of the present invention through the vector network analyzer 11. The foregoing readable storage medium includes: various media such as USB flash drives, mobile hard disks, read-only memories (ROM, Read-Only Memory), random access memories (RAM, Random Access Memory), magnetic disks, or optical discs that can store program codes.

[0068] As described above, the above are only various embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of changes or substitutions, which should all be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. A method for correcting the phase detection error in the quiet zone of a compact range, characterized in that The method for correcting the phase detection error of the quiet zone of the compact range includes: Obtaining the measured quiet zone phase distribution data detected at at least one set of symmetric probe points in the probe movement scanning plane of the quiet zone detection system of the compact range to be corrected, where the two probe distribution points included in each set of symmetric probe points are symmetric about the pole position center in the polar coordinate positions in the probe movement scanning plane; For each set of symmetric probe points, based on the measured quiet zone phase distribution data of the two probe distribution points in the set of symmetric probe points, calculating the scanning frame position deviation corresponding to the set of symmetric probe points based on the principle of symmetric detection phase consistency; Performing mathematical statistical analysis on the scanning frame position deviations corresponding to all sets of symmetric probe points to obtain the scanning frame assembly error of the quiet zone detection system of the compact range to be corrected; Compensating and correcting the quiet zone detection system of the compact range to be corrected according to the scanning frame assembly error.

2. The method for correcting the phase detection error of the quiet zone of the compact range according to claim 1, characterized in that For each set of symmetric probe points, the step of calculating the scanning frame position deviation corresponding to the set of symmetric probe points based on the principle of symmetric detection phase consistency includes: Calculating the phase difference data between the measured quiet zone phase distribution data of the two probe distribution points in the set of symmetric probe points; Based on the first correlation relationship between the scanning frame position deviation, the signal wavelength of the test signal, and the first quiet zone phase detection deviation, solving for the scanning frame position deviation based on the phase difference data to obtain the scanning frame position deviation corresponding to the set of symmetric probe points.

3. The method for correcting the phase detection error of the quiet zone in a compact range according to claim 2, wherein, The first correlation relationship between the scanning frame position deviation, the signal wavelength of the test signal, and the first quiet zone phase detection deviation is expressed by the following formula: ； Among them, is used to represent the polar radius of any probe distribution point in the probe movement scanning plane, is used to represent the scanning frame position deviation at this probe distribution point, is used to represent the first static area phase detection deviation caused by the scanning frame position deviation at this probe distribution point during the static area phase detection, is used to represent the signal wavelength of the test signal.

4. The method for correcting the phase detection error of the quiet zone in a compact range according to claim 2, wherein, For any set of symmetric probe points, the scanning frame position deviation corresponding to the set of symmetric probe points is calculated by the following equation: ； Among them, is used to represent the polar radius of the first probe distribution point in the probe symmetric point group within the probe movement scanning plane, is used to represent the polar radius of the second probe distribution point in the probe symmetric point group within the probe movement scanning plane, is used to represent the polar angle of the first probe distribution point within the probe movement scanning plane, is used to represent the polar angle of the second probe distribution point within the probe movement scanning plane, is used to represent the measured static zone phase distribution data of the first probe distribution point, is used to represent the measured static zone phase distribution data of the second probe distribution point, is used to represent the scanning frame position deviation corresponding to the probe symmetric point group, is used to represent the signal wavelength of the test signal, where , .

5. The phase detection error correction method for the quiet zone of the compact range according to claim 1, characterized in that The step of performing mathematical statistical analysis on the scanning frame position deviations corresponding to all sets of symmetric probe points to obtain the scanning frame assembly error of the quiet zone detection system of the compact range to be corrected includes: Classifying the scanning sections of all sets of symmetric probe points, and performing weighted average operations on the scanning frame position deviations of all sets of symmetric probe points belonging to the same scanning section to obtain the fitting values of the scanning frame assembly errors of at least one scanning section, where each scanning section is perpendicular to the probe movement scanning plane; Performing arithmetic average operations on the fitting values of the scanning frame assembly errors of all scanning sections to obtain the scanning frame assembly error of the quiet zone detection system of the compact range to be corrected.

6. The method for correcting the phase detection error of the quiet zone of the compact range according to any one of claims 1-5, characterized in that, The method for correcting the phase detection error of the quiet zone of the compact range further includes: Obtaining the actual quiet zone phase distribution data detected at multiple detection points in the quiet zone phase detection plane of the quiet zone detection system of the compact range to be corrected after compensating for the scanning frame assembly error for the test signal; According to the off-axis deviation and rolling deviation of the quiet zone phase detection plane relative to the equiphase plane of the parallel wave, and the second correlation relationship between the signal wavelength of the test signal and the second quiet zone phase detection deviation, based on the actual quiet zone phase distribution data of each of the multiple detection points, with the goal of minimizing the quiet zone phase detection noise associated with the second quiet zone phase detection deviation, solve the off-axis deviation of the detection plane and the rolling deviation of the detection plane of the to-be-corrected compact range quiet zone detection system; Compensate and correct the to-be-corrected compact range quiet zone detection system according to the off-axis deviation of the detection plane and the rolling deviation of the detection plane.

7. The method for correcting the phase detection error of the quiet zone of the compact range according to claim 6, wherein The off-axis deviation and rolling deviation of the quiet zone phase detection plane relative to the equiphase plane of the parallel wave, and the second correlation relationship between the signal wavelength of the test signal and the second quiet zone phase detection deviation are represented by the following equation: ； Among them, It is used to represent the polar radius of the probe distribution point mapped by any detection point in the probe movement scanning plane, It is used to represent the polar angle of the probe distribution point mapped by the detection point in the probe movement scanning plane, It is used to represent the abscissa value of the probe distribution point mapped by the detection point in the two-dimensional coordinate system, It is used to represent the ordinate value of the probe distribution point mapped by the detection point in the two-dimensional coordinate system, It is used to represent the off-axis deviation of the static area phase detection plane relative to the parallel wave equiphase surface, It is used to represent the roll deviation of the static area phase detection plane relative to the parallel wave equiphase surface, It is used to represent the second static area phase detection deviation jointly caused by the off-axis deviation and the roll deviation at the probe distribution point mapped by the detection point, It is used to represent the signal wavelength of the test signal.

8. The method for correcting the phase detection error of the quiet zone in a compact range according to claim 6, wherein The quiet zone phase detection noise associated with the second quiet zone phase detection deviation is represented by the following equation: ； Among them, used to represent the polar radius of the probe distribution point mapped by the th detection point in the probe movement scanning plane, used to represent the th detection point in the polar angle of the probe distribution point mapped by the probe movement scanning plane, used to represent the abscissa value of the probe distribution point mapped by the th detection point in the two-dimensional coordinate system, used to represent the th detection point in the ordinate value of the probe distribution point mapped by the two-dimensional coordinate system, used to represent the off-axis deviation of the static area phase detection plane relative to the parallel wave equiphase surface, used to represent the roll deviation of the static area phase detection plane relative to the parallel wave equiphase surface, used to represent the th detection point of the actual static area phase distribution data, used to represent the signal wavelength of the test signal, is a constant, used to represent the static area phase detection noise associated with the second static area phase detection deviation, used to represent the total number of detection points.

9. A compact range quiet zone detection system, characterized in that, The compact range quiet zone detection system includes a compact range turntable, a scanning frame, a probe antenna, and a vector network analyzer, wherein the scanning frame is installed on the polarization disk surface of the compact range turntable, and the probe antenna is installed on the scanning working surface of the scanning frame; The vector network analyzer is electrically connected to the compact range turntable and the scanning frame respectively, and is used to control the compact range turntable to drive the scanning frame to rotate, and / or control the scanning frame to adjust the detection position of the probe antenna on the scanning working surface, wherein the vector network analyzer can send a test signal to the compact range reflector through the feed antenna, so that the compact range reflector reflects to form a test quiet zone, and the probe antenna collects the plane wave signal from the test quiet zone; The vector network analyzer is also electrically connected to the probe antenna, and is used to receive the plane wave signal collected by the probe antenna, and detect the quiet zone phase distribution data of the test signal based on the plane wave signal; The vector network analyzer also stores a computer program and can run the computer program to implement the compact range quiet zone phase detection error correction method according to any one of claims 1-8.

10. A readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by the compact range quiet zone detection system, the compact range quiet zone phase detection error correction method according to any one of claims 1-8 is implemented.

Images