38 results about "Compact range" patented technology

The invention provides a method for testing a phased array compact range of a high-orbit communication satellite. The method comprises the following steps: unfolding and fixing a whole satellite antenna on the ground; confirming that a test coupler is installed and a cable is connected normally; uploading software to a phased array antenna and confirming that the function is normal; setting a phased array transponder path, switching on the change-over switch, and opening the active single machine and the phased array on the path; after the phased array is preheated through telemetering, system-level testing is carried out, wherein at least one performance parameter such as noise spectrum and equivalent omnidirectional radiation power and functions such as program control pointing and beam hopping are tested; program control pointing function verification is performed according to wave beam program control preset pointing, and the DUT turntable is matched to verify the precision; hopping beam function verification jumps according to a preset time slot, and a Zero Span mode of a frequency spectrograph analyzes a time domain characteristic verification time sequence; and switching the phased array to standby after verification, shutting down after telemetering is normal, and recovering the on-satellite state. In this way, it can be ensured that the integration performance of the phased-array antenna and the transponder system meets the design requirement through quantitative analysis.

The invention relates to a double-anti-terahertz compact range assembly error compensation method, which comprises the following steps of: assembling a main support structure, and removing assembly stress through high-temperature aging; a main reflector is installed on the main supporting structure, and the main reflector is calibrated; the current position of the main reflector is calibrated to a reference mirror on the side edge of the main reflector, and a test coordinate system is established based on the reference mirror; an auxiliary reflector mounting bottom plate is mounted on the main supporting structure, an auxiliary reflector is mounted on the auxiliary reflector mounting bottom plate, and the auxiliary reflector is calibrated; calculating the offset of the final position of the feed source assembly relative to the theoretical position of the feed source assembly; and with the main reflector as a reference, the position of the feed source assembly is adjusted based on the offset by adopting a high-precision six-degree-of-freedom platform, so that the feed source assembly is located at a final position. According to the invention, the assembly and calibration difficulty of the sub-reflector is effectively reduced, and the final assembly and calibration precision of the terahertz compact range system is equivalent to the test precision of an optical test instrument, namely the highest precision can be achieved.

The utility model relates to a compact range reflector, which comprises a reflecting surface (1), a back frame (2) and a base (3), wherein the back frame (2) is used for connecting the reflecting surface (1); the base (3) is used for supporting the reflecting surface (1) and the back frame (2); the back frame (2) is fixedly supported on the base (3); a first adjusting pull rod (4) is connected between the reflecting surface (1) and the back frame (2); the reflecting surface (1) is movably supported on the base (3); along the vertical direction, a plurality of rows of first adjusting pull rods (4) are arranged between the reflecting surface (1) and the back frame (2), and a plurality of first adjusting pull rods (4) are arranged in each row; and the first adjusting pull rod (4) is a telescopic rod and is used for adjusting the orientation of the reflecting surface (1). The compact range measuring device has the characteristics of reliable structure and flexibility in use, and the measuring effect of the compact range adopting the compact range measuring device is effectively ensured.

The utility model relates to a low-scattering foam support used for supporting a test target of a compact range. The low-scattering foam support comprises a foam support, a wave absorbing plate installed at the bottom of the foam support and a posture adjusting table used for being connected with the wave absorbing plate. The foam support is a regular cylinder and comprises a truncated cone cylinder part and a cylinder part; the truncated cone column part and the cylinder part are coaxially arranged, and the truncated cone column part is arranged at the upper end of the cylinder part; the wave absorbing plate is connected to the end, away from the truncated cone column part, of the cylinder part, and the wave absorbing plate covers the end of the cylinder part. According to the utility model, electromagnetic influence on the supported measured object can be effectively avoided through the arranged foam support, and the accuracy and reliability of the measurement process can be facilitated. In addition, a wave absorbing plate can be arranged at the bottom of the foam support, so that the influence of coupling between the posture adjusting table below and the measured object on the electromagnetic measurement process can be effectively blocked.

The utility model discloses a compact range measuring system, which relates to the technical field of compact range measurement and comprises a horn antenna, a compact range reflecting panel and an environment wave-transmitting box, the horn antenna is arranged below the compact range reflecting panel and can emit electromagnetic waves, the compact range reflecting panel is arranged outside the environment wave-transmitting box, and the environment wave-transmitting box is arranged outside the compact range reflecting panel. The compact range reflection panel can reflect electromagnetic waves, the box body of the environmental wave-transparent box can allow the electromagnetic waves to pass through, the internal space of the environmental wave-transparent box can accommodate a measured target, and environmental parameters of the internal space of the environmental wave-transparent box can be adjusted; according to the utility model, compact range measurement under different environmental conditions can be realized.

The invention provides a method and system for measuring the equivalent RCS of an indoor active forwarding target, and the method comprises the steps: determining the test time delay of a test transmitting pulse and a test receiving pulse according to the first time delay of the active forwarding target and the second time delay of a calibration body; determining a target pulse parameter of the active forwarding target based on the pulse parameter of the calibration body; in the test area of the compact range, the target pulse parameter and the test time delay are adopted to test the active forwarding target, and target echo power is obtained; testing the calibration body by adopting the pulse parameter and the second time delay to obtain calibration body echo power; and determining a target RCS value of the active forwarding target according to the target echo power, the calibration body echo power and the RCS value of the calibration body. According to the scheme, the equivalent RCS measurement can be carried out on the active forwarding target under the indoor condition.

The application discloses a multi-circle gradually-changing impedance edge loading tight field device, which is a novel device different from traditional sawtooth tight field and edge curl tight field. The device sprays conductive paint with gradually-changing impedance on the edge of a parabolic surface in multiple circles, and controls the impedance value of the conductive paint in the gradually-changing manner. Compared with common sawtooth edge processing and edge curl processing, the design of the multi-circle gradually-changing impedance does not need to process the edge shape into sawtooth or curve, but only needs to load impedance on the edge surface of the parabolic reflecting surface, so that the processing steps of the tight field reflecting surface are greatly simplified, the processing difficulty is reduced, and the cost is saved. The device disclosed by the application fully meets the performance indexes of the tight field, can be used as an upgrade and substitution of the existing tight field product, and is one of the development trends of future low-frequency test fields.

The utility model provides a multi-band compatible compact range antenna test system which comprises a bottom plate, a feed-in antenna is fixedly mounted on the upper surface of the bottom plate, a fixing column is arranged on the upper side of the bottom plate and located on the left side of the feed-in antenna, a reflection panel is arranged on one side of the fixing column, and a connecting mechanism is arranged between the reflection panel and the fixing column. A mounting mechanism is arranged in the connecting mechanism, an electric lifting rod is fixedly mounted at the position, located on the right side of the feed-in antenna, of the upper surface of the bottom plate, a fixing frame is fixedly mounted on the upper surface of the electric lifting rod, and a clamping mechanism is arranged in the fixing frame. Through the arrangement of the connecting mechanism, the sliding rail and the moving block, the hydraulic rod is driven to cooperate with the fixed rod to adjust the angle of the reflection panel, the moving block slides on the surface of the sliding rail, the position of the reflection panel can be adjusted, and the test requirements of a multi-band antenna can be met.

The invention discloses a high and low temperature compact range darkroom satellite-ground link real-time simulation verification system, and belongs to the technical field of aerospace testing. The system comprises a compact range darkroom, an integrated high and low temperature control subsystem, an integrated cooperative control and link simulation subsystem, a radio frequency test subsystem and a mechanical support subsystem. The core innovation of the device is as follows: a polymethacrylimide (PMI) foam material with a dielectric constant close to that of air is adopted to integrally construct a closed temperature control cavity, so that electromagnetic measurement errors introduced by a traditional medium window at high and low temperatures are thoroughly eliminated; and through a high-precision synchronous control technology, wide-temperature-range environment simulation, phased array terminal calibration and dynamic satellite-ground communication link simulation are deeply integrated and synchronously carried out. According to the method, the real, efficient and closed-loop verification of the functions and performance of the satellite-ground communication system is realized in an equivalent in-orbit temperature environment, the test precision, authenticity and efficiency are remarkably improved, and the development of high-reliability spacecrafts is powerfully supported.

The application discloses a high-performance three-mirror compact range antenna measurement system based on NURBS, combines a non-uniform rational B-spline curve surface fitting algorithm with a terahertz three-mirror compact range design, gives a new application of the non-uniform rational B-spline modeling technology according to electromagnetic background and aperture field distribution of a terahertz frequency band, realizes shape conversion of a beam aperture section from a circular shape to a square shape, takes into account the advantages of the B-spline, can realize free distribution of a grid, obtains a shaped surface of a compact range aperture meeting requirements, and solves the adaptation problem of the non-uniform rational B-spline in the shaping surface design process of the three-mirror compact range. In addition, in the process of the three-mirror compact range design, a good energy mapping condition is explored, the energy attenuation relationship function of the edge of a quiet zone is optimized by adjusting light and a propagation path, the energy dispersion problem caused by diffraction of light at the edge of a primary mirror is further solved, and the performance of the whole three-mirror compact range system is improved.

The utility model relates to a position adjusting base for a compact range reflecting surface. The position adjusting base comprises a base (1), a first adjusting piece (2) installed in the base (1) and a second adjusting piece (3) installed on the first adjusting piece (2). The base (1) comprises a base body (11), a first driving piece (12) and a second driving piece (13), wherein the first driving piece (12) and the second driving piece (13) are arranged in the circumferential direction of the base body (11). The first driving piece (12) is arranged opposite to the side wall of the first adjusting piece (2) and used for driving the first adjusting piece (2) to reciprocate in the first direction; the first driving piece (12) is arranged opposite to the side wall of the second adjusting piece (3) so as to drive the second adjusting piece (3) to reciprocate in the second direction; the first direction is perpendicular to the second direction; an embedding groove (31) is formed in the upper side of the second adjusting piece (3).

A calibration method for the incident wave direction of a terahertz compact range site determines the incident wave direction of the compact range site based on the overall optimization of the actual surface shape of the main reflector, levels the incident wave direction of the site based on the horizontal level of the ground, realizes the monitoring of the change of the incident wave direction of the site at any time, and calibrates the incident wave direction of the site. When measuring the electrical performance of a spaceborne antenna in a terahertz compact range, the incident wave direction of the site can be obtained quickly, non-contact, and with high precision, realizing the calibration of the site for the antenna under test.

The invention relates to the technical field of target scattering characteristic testing, in particular to a compact range double-station RCS plane scanning testing method and system. The system comprises a transmitting antenna, a double-cylindrical-surface reflecting surface module, a plane scanning frame, a receiving antenna, radio frequency receiving and transmitting equipment and a test computer. According to the method, a mode of combining single compact range plane wave irradiation and plane scanning near field receiving is adopted. The transmitting end forms a plane wave in a quiet zone through the double-cylinder compact range to irradiate a to-be-measured target; the receiving antenna is driven by the plane scanning frame to scan in a two-dimensional plane and acquire a target near-field bistatic scattering signal; and the test computer processes the signal based on a near-far field transformation algorithm, and performs inversion to obtain the far-field double-station RCS of the target. According to the method, a receiving end compact range is replaced by plane scanning, the system cost, complexity and site requirements are remarkably reduced, and the prominent problems that a traditional indoor double-station RCS test technology is difficult to implement and high in cost are solved.

The invention provides a micron-sized adjusting mechanism for accurately positioning and adjusting a high-precision reflector antenna, which is characterized in that a hollow motor is mounted on a supporting threaded rod of a compact thread differential adjusting mechanism, and a set of annular structure for realizing high-precision displacement through differential threads is tightly placed between the hollow motor and the threaded rod; the front end and the rear end of the adjusting mechanism are each provided with a ball head structure, so that the adjusting mechanism and the panel have the self-adaptive capacity in the assembling process. The compact thread differential adjusting mechanism achieves six-degree-of-freedom adjustment, and the precision requirements of the compact range panel in different installation and adjustment stages are met through manual coarse adjustment and electric fine adjustment. Space is fully saved, the hollow servo motor is used, the gap between the hollow servo motor and the shaft is utilized, two pairs of differential threads are designed to be matched, micron-sized Z-direction high-precision movement is achieved, and the assembling requirement of a compact range is met. And meanwhile, high bearing capacity, high adjustment resolution and long-term operation stability and reliability are achieved.

The invention discloses a compact range dead zone amplitude and phase testing method based on a reference target method, and belongs to the technical field of microwave measurement. According to the method, a mathematical relationship between a target scattering field and a target surface induction current is established, a conductor rod is used as a reference target, and one-dimensional transverse distribution of any target is represented by rotating the conductor rod around the center of the reference target. According to the compact range quiet zone amplitude and phase testing method based on the reference target method, radar cross sections RCS of a reference target under different azimuth angles are measured, compact range quiet zone amplitude and phase distribution is obtained through data processing inversion, and dependence on a complex and time-consuming probe scanning device is not needed. Wherein the reference target is a metal rod or a cylinder of which the length is greater than the range of the quiet zone, and the surface field distribution of the reference target and the RCS essentially form a Fourier transform relationship. The method effectively simplifies the test process of the quiet zone, improves the test efficiency, and is suitable for rapid and accurate evaluation of the performance of the compact range quiet zone.

The present application relates to the technical field of microwave test, and more particularly to a support structure for tight-field RCS test in terahertz frequency band, comprising a support frame, a reflection surface mounting and adjusting part and a feed seat. The support frame comprises a vertical section and a horizontal section, the lower end of the back frame of the reflection surface is connected with the follow-up adjusting support through the vertical section, one end of the telescopic pull rod is hinged with the vertical section, and the other end is hinged with the upper end of the back frame, when the telescopic pull rod is telescoped, the back frame rotates relative to the follow-up adjusting support. The feed antenna is mounted on the pitch adjusting part through the horizontal adjusting part, the pitch adjusting part is mounted on the horizontal section, the horizontal adjusting part drives the horizontal movement of the feed antenna, and the pitch adjusting part is used for adjusting the pitch angle of the feed antenna. The support structure adjusts and fixes the reflection surface through the telescopic pull rod and the follow-up adjusting support, adjusts the position and angle of the feed antenna through the horizontal adjusting part and the pitch adjusting part, ensures that the feed antenna is located at the focal point of the reflection surface, and makes the test more accurate.

The present application relates to the technical field of multi-channel compact range antenna test system, and discloses a compact range high-precision multi-feed source translation switching device, which comprises a translation mechanism, a support frame and a feed source support, the support frame top platform is provided with the feed source support, the translation mechanism adopts ball screw transmission, the side is provided with a range finder and an induction block as a phase center positioning auxiliary, and the mounting position on the feed source support covers different frequency feed sources. The device automatically switches full-band P~Ka feed sources through process control translation shaft movement, and through multi-dimensional adjustment of the fine adjustment mechanism and the polarization shaft, the wide-band coverage and high test precision requirements in complex scenes are met, and the device is suitable for multi-channel parallel test scenes.

The invention relates to the technical field of compact range testing, and discloses a compact range testing low-frequency transmitting antenna supporting device which comprises a support, a lifting base and an antenna mounting seat, the lifting base is movably arranged on the support in the first direction, the first direction is consistent with the height direction of the support, and the antenna mounting seat is arranged on the lifting base. And the antenna mounting seat is arranged on the lifting base in an angle adjustable manner by taking a second direction as an axis, the second direction is perpendicular to the first direction, and a mounting position is arranged on the antenna mounting seat and is used for mounting a transmitting antenna. And lifting and polarization conversion of the transmitting antenna are realized.

The invention provides a method for quantifying the influence of amplitude-phase tapering of a quiet zone on antenna radiation characteristic parameters, and the method comprises the steps: measuring the scattering data of a standard antenna based on a preset position point of the quiet zone of a compact range, and obtaining the actual measurement statistical characteristics; constructing a function model for describing coning distribution on the basis of the actually measured statistical characteristics, wherein the function model describes the relationship between amplitude coning and phase coning of the quiet zone and the spatial position; correcting an amplitude weight and a phase weight of the antenna array unit to be measured based on the function model; calculating a corrected array factor and a total directional diagram according to the amplitude weight and the phase weight; and determining a radiation characteristic parameter difference value of the to-be-tested antenna according to the corrected array factor and the total directional diagram. According to the invention, the influence of the amplitude-phase tapering of the quiet zone on the radiation characteristic parameters of the antenna is quantified, and simulation analysis based on numerical values can be realized.

The invention discloses a double-station RCS (radar cross section) scaling test system and a test method for an electrically large-size target in an indoor compact range. The system comprises a transmitting feed source, a receiving feed source, a transmitting compact range parabolic reflecting surface, a receiving compact range parabolic reflecting surface, a transmitting compact range movable bracket, a receiving compact range movable bracket, a target to be measured, a target placement turntable, a vector network analyzer, a three-port power divider and a control and data processing center, the to-be-measured target comprises two types: one type is a calibration body, and the other type is a scaling target model; and calculating and processing to obtain an RCS value of the scaled target model through a known RCS of the calibration body, a receiving feed source output intermediate frequency signal obtained by measurement of the calibration body and a receiving feed source output intermediate frequency signal obtained by measurement of the scaled target model by utilizing a substitution method. The system is simple in structure and convenient to install, and the testing efficiency is improved.

The invention discloses a system and a method for imaging and diagnosing spurious signals in a compact range darkroom, and belongs to the technical field of microwave measurement. The system comprises a scanning frame, a transceiving feed source antenna, a parabolic reflecting surface, a feed source bracket, a vector network analyzer, a control computer and a compact range darkroom. The scanning frame is erected in front of the feed source support, and the transceiving feed source antenna is installed on the scanning frame and collects test data through scanning in the horizontal or vertical direction. The control computer controls scanning parameters of the scanning frame and triggering of the vector network analyzer, and stores and processes data. And performing imaging processing on test data through a projection algorithm to generate field imaging results of a horizontal section and a vertical section, analyzing distribution of strong scattering points in combination with darkroom layout, and quickly positioning a source of spurious signals. According to the invention, full-field imaging of the compact range darkroom is realized, the efficiency and accuracy of spurious signal diagnosis are remarkably improved, and the method is suitable for spurious source positioning of various compact range test systems.

The invention relates to a Terahertz compact range darkroom target supporting device, and relates to the field of supports, the Terahertz compact range darkroom target supporting device comprises a two-dimensional rotating top capable of adjusting the azimuth direction and the pitching direction, a supporting table fixedly connected to the two-dimensional rotating top and a clamp erected on the top of the supporting table, the supporting table is a circular table made of polytetrafluoroethylene, and the outer diameter of the bottom of the supporting table is larger than that of the top of the supporting table; the top of the support table is lower than the dead zone center; the clamps are of an L-shaped structure, the horizontal ends of the multiple clamps are connected with the top of the supporting table, and the right-angle ends of the clamps are connected with the target. The target posture adjusting device has the advantages that the flexibility and reliability of target posture adjusting are improved, and a good foundation is laid for multi-state testing of the target.

The present application relates to a kind of stepped inverted ridge structure short axial length dual-polarized compact range feed antenna, wherein inverted ridge fin part adopts stepped fin, cooperate with small angle of aperture conical waveguide structure can effectively expand working bandwidth, compress horn axial length, reduce voltage standing wave ratio;Feed probe adopts four standard coaxial connector connected coaxial cable;Feed uses horn design with axial slot, can realize beam with wideband equalization, stable phase center and low cross polarization, after optimization, feed full-band realizes voltage standing wave ratio less than 1.5.The four-ridge horn feed has the outstanding advantages of simple structure, small size, light weight and low cost.

The invention discloses a compact range reflecting surface constant-temperature design method, belongs to the technical field of compact range reflecting surface design, and designs a compact range reflecting surface constant-temperature device which synchronously designs the appearance and size at the beginning of reflecting surface design. A vapor chamber with a capillary effect and conducting liquid is arranged in the compact range reflecting surface constant temperature device, and a semiconductor sheet and a temperature measuring sensor are arranged on the vapor chamber every 10-30 cm. A temperature-voltage feedback circuit matrix is designed, and positive and negative electrodes of all semiconductor chips and a probe interface of a temperature measurement sensor are connected to a control matrix. The invention designs a compact range constant-temperature technology, particularly a compact range reflecting surface constant-temperature technology which greatly reduces energy consumption compared with a traditional darkroom constant-temperature technology, and through the technology, constant temperature of the compact range reflecting surface is realized under the condition that the energy consumption is reduced, so that deformation of a metal reflecting surface is reduced, and the surface precision of the reflecting surface is guaranteed; therefore, the stability of the amplitude-phase characteristic of the dead zone is ensured.

The invention relates to the technical field of testing, in particular to a compact range testing system based on OTA millimeter waves, which comprises a box body, a heat dissipation device is arranged in the box body, a porous supporting platform is fixedly mounted in the middle of the inner side of the box body, a testing box is mounted at the upper end of the porous supporting platform, the heat dissipation device comprises a rectangular through groove, and the rectangular through groove is formed in the middle of the upper end of the box body. A blast assembly is installed at the bottom of the box body, the upper end of the blast assembly is fixedly connected to the lower end of the driving assembly, air guide through grooves are symmetrically formed in the positions, close to the upper end, of the left side wall and the right side wall of the box body, and dust screens are installed in the air guide through grooves; an arc-shaped air guide plate is fixedly connected to the upper end of the interior of the air guide through groove, the box body capable of dissipating heat of the test box is arranged on the outer side of the test box, continuous cold air flow can be provided while heat dissipation is conducted, and therefore the running smoothness and stability of the test box are guaranteed.

The present invention discloses a VICTS antenna beam pointing test error calibration method and device, belonging to the field of satellite communications, comprising the following steps: installing the VICTS antenna in a compact range and performing a beam pointing test; testing the beam pointing of the symmetrical side of the antenna body azimuth plane at a certain antenna surface angle; calculating the angle at which the antenna surface normal deviates from the plane wave direction of the compact range when the compact range turntable is at zero position; calculating the angle value at which the antenna surface deviates from the vertical direction; calculating the beam azimuth angle correction value corresponding to any beam pointing; and calculating the beam off-axis angle correction value corresponding to any beam pointing. The present invention solves the problem of inaccurate beam pointing tests caused by installation errors when the existing VICTS antenna is tested in a compact range darkroom.

The application discloses a kind of fast and efficient array beam deflection angle calibration methods for equivalent isotropically radiated power test, including pre-calibration stage and calibration stage;Pre-calibration stage, a standard antenna under test is used as reference, placed in the quiet zone of compact range;In the case of unfocused feed, rotate reference 0 and 20, record the two sets of data;In the case of defocus, rotate reference 0, θ m , 30 and get the corresponding S 21 , record the three sets of data;Get the expression of two deflection angle fitting functions;Calibration stage places the problematic device in the quiet zone of compact range, and positions the feed according to the feed deflection angle 0, 20, -20, respectively, to obtain the corresponding S 21 ;The three sets of test values are brought into the unfocused compact range angle power fitting function and the defocused compact range angle power fitting function, to obtain the peak deflection angle and deflection direction of the problematic device.The application realizes the angle calibration of production line test equipment, with the characteristics of convenience and efficiency.

The utility model relates to the technical field of antenna testing, in particular to an antenna compact range testing device, which comprises a base. A platform is fixedly mounted in the middle of the top end of the base, and horizontal sliding mechanisms are arranged on the two sides of the platform; a distance adjusting mechanism is arranged in the middle of the platform, and a locking mechanism is arranged on the inner side of the platform. The first connecting rod, the second connecting rod, the servo motor, the movable disc and the rotating rod are used in cooperation, the other end of the second connecting rod pulls the rotating rod when the second connecting rod swings, the moving tables move towards the middle of the platform through the rotating rod, and the two moving tables slide in a guiding mode through the sliding bases and the guide rails when moving. The rotary tables on the two rotary table mounting frames are respectively used for mounting an antenna to be tested and a transmitting antenna, and the rotary tables and the transmitting antenna move simultaneously, so that the distance adjusting speed can be increased, and the energy consumption can be reduced.

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.

The application discloses a method for improving the performance of a compact range quiet zone by adjusting the feed source deflection angle, and the method comprises the following steps: determining the focal length of a compact range reflecting surface, the deflection direction of the reflecting surface, the size of the quiet zone and the position of the quiet zone; projecting the quiet zone to the reflecting surface to determine the lowest point and the highest point projected on the deflection direction of the reflecting surface; obtaining the feed source directional diagram data through simulation or measurement; rotating the feed source from the lowest point to the highest point, and calculating the amplitude flatness of the quiet zone in the deflection direction of the reflecting surface at different deflection angles by using a geometric optics method; and finding the feed source deflection angle that makes the amplitude flatness minimum by comparison. The application can improve the performance of the compact range quiet zone without changing the compact range reflecting surface, the feed source and the darkroom structure.