A phased array radar test system and a method for testing a phased array radar

Abstract

The present application discloses a phased array radar test system and a method for testing the phased array radar, comprising a darkroom and a central control system. A partition is arranged in the darkroom, a simulation area and an interference area are arranged on one side of the partition, and a test area for the phased array radar is arranged on the other side. The darkroom comprises a first wall and a second wall arranged opposite to each other; the simulation area is arranged close to the first wall, and the test area is arranged close to the second wall; the simulation area comprises a simulator, a guide rail device and a simulation table built under the guide rail device, and the simulator is arranged on the guide rail device; the test area is provided with a loading platform, and the loading platform is used to load the phased array radar; the interference area is provided with an interference source; the central control system comprises a central control computer, and the central control computer is control-connected with the guide rail device; the central control computer is control-connected with the interference source; and the central control computer is electrically connected with the loading platform.

Description

Technical Field

[0001] The present application relates to a phased array radar near-field test system, and in particular to a phased array radar test system and a method for testing the phased array radar. Background Art

[0002] Phased array radar (PAR) is a radar that changes the direction of the beam by changing the phase of the radar wave. It is named because the antenna is in the form of a phased array. Typical phased array radars use digitally controlled phase shifters to change the phase distribution of antenna elements to achieve rapid scanning of the beam, rather than the traditional mechanical rotation of the antenna surface. Therefore, it is also called electronically scanned array (ESA) radar. Phased array radars are divided into two categories: passive phased array and active phased array. Both have greater technical advantages over traditional radars.

[0003] Currently, phased array radar technology is widely used in a variety of radar systems, including military and civilian. With the development and widespread application of phased array radar technology, there are many test items and large tasks, and the traditional far-field test takes a long time. It is becoming more and more urgent to develop an antenna near-field test system suitable for phased array radar system detection. Especially for aviation airborne phased array radars, there is currently no perfect near-field test system for aviation airborne phased array radars.

[0004] In view of this, it is necessary to provide a phased array radar test system and a method for testing the phased array radar. Summary of the invention

[0005] In order to solve the above technical problems, the present application provides a phased array radar near-field test system.

[0006] The phased array radar test system provided in this application adopts the following technical solution:

[0007] A phased array radar test system includes a darkroom and a central control system.

[0008] A partition is provided in the darkroom, a simulation area and an interference area are provided on one side of the partition, and a phased array radar test area is provided on the other side of the partition, the darkroom comprises a first wall and a second wall which are arranged opposite to each other; the simulation area is arranged close to the first wall, and the test area is arranged close to the second wall;

[0009] The simulation area includes a simulator, a guide rail device and a simulation platform built under the guide rail device, and the simulator is arranged on the guide rail device; the test area is provided with a loading platform, and the loading platform is used to load the phased array radar; the interference area is provided with an interference source, and the interference source is arranged corresponding to the phased array radar;

[0010] The central control system includes a central control computer, which is control-connected with the guide rail device; the central control computer is control-connected with the interference source; and the central control computer is control-connected with the loading platform.

[0011] The phased array radar test system provided by the present application avoids echo interference caused by ultrasonic waves through darkroom design, sets interference sources in the test field, tests the anti-interference ability of the phased array radar, and emits ultrasonic waves in the simulator to test the phased array radar. The output ultrasonic frequency, movement speed and other parameters of the test area and the interference area are set by the central control computer. It is easy to operate and use, and is not restricted by the environment. The phased array radar test system provided by the present application, the darkroom of which refers to the wall, wall top and floor with wave absorbing function, etc., the present application further divides the darkroom into a test area, a simulation area and an interference area between the test area and the simulation area, and a partition is provided between the interference area and the test area. The test area and the simulation area need to be separated by an appropriate distance to meet the conduction requirements of ultrasonic waves, so setting the test area and the simulation area close to the wall can save space and reduce the cost of building construction.

[0012] The test system proposed in the present application pulls the balancing mechanism through the power mechanism, and the power mechanism and the balancing mechanism slide on the guide rail and the driven rail respectively, and the distance between the guide rail and the driven rail is always consistent, that is, the closest connecting section length between the guide rail and the driven rail is equal. The power mechanism and the balancing mechanism are respectively installed on the guide rail and the driven rail, and the power mechanism provides or generates power. The test system that separates the power mechanism and the balance mechanism but coordinates them in a unified manner has the following advantages: First, by separating the force mechanism and the balance mechanism, the vibration generated by the power mechanism is separated, which does not directly affect the balance mechanism, so that the probability of it being vibrated is greatly reduced, or it can be prevented from being vibrated; second, the simulator mounted on the carrier platform emits a signal with good directivity whether it is in motion or in a stationary state; when the present application separates the power mechanism and the balance mechanism, the separated power mechanism and balance mechanism are combined with a double guide rail structure, and the directivity problem of the simulator is fundamentally solved in structure through the positional relationship between the two; third, the sliding of the power mechanism and the balance mechanism on the guide rail and the driven rail is continuous and reciprocating, and it is easy to vibrate when turning back. The above-mentioned separation design solves this technical problem. The present application separates the balance mechanism from the power mechanism, so that the balance mechanism can follow, sustainably, and steadily slide synchronously, so that the carried balance equipment does not vibrate.

[0013] Furthermore, the guide rail and the driven guide rail are offset and have the same arc center, and the shortest connecting line distance between the guide rail and the driven guide rail is equal; the guide rail includes a guide rail body, the guide rail body includes an outer wall away from the arc center, and the outer wall is provided with saw teeth; the power mechanism includes a drive shaft, and a drive gear is provided on the drive shaft corresponding to the saw teeth, and the drive teeth are meshed with the saw teeth.

[0014] The guide rail device proposed in the present application has a guide rail and a driven guide rail that are two sections of guide rails with the same arc center and corresponding physical positions, and the phased array radar under test is located at the center of the arc. When the power mechanism and the balancing mechanism slide on the guide rail, the distance to the center of the circle is always kept consistent, and the balancing mechanism and the power mechanism are fixedly connected so that the relative positions of the two are fixed, and the arc centers of the two arcs where the two are located are the same, and the extension line of the connecting line segment of the two passes through the arc center, so that the directivity is excellent, which can ensure that the signal emitted by the simulator is always directed toward the phased array radar. The guide rail device proposed in the present application has the shortest connecting line distance between the guide rail and the driven guide rail being equal. Traction is achieved by a gear mechanism in which the driving teeth mesh with the saw teeth, and the traction accuracy is high, and the rate control can be guaranteed.

[0015] The guide rail device proposed in this application is mainly used for mounting simulators in indoor field tests of phased array radars. When the simulator is displaced to any position, the distance from the phased array radar under test does not change. Therefore, the phased array radar under test needs to be placed on the center of the arc of the power mechanism so that during the test, the distance between the simulator and the phased array radar is always consistent, making the expression of the measured parameters more comprehensive.

[0016] The guide rail device provided in the present application has a guide rail that is farther away from the arc center than the driven guide rail, that is, the guide rail is arranged on the outside of the driven guide rail, and the power mechanism pulls the balancing mechanism. The power traction is started from the outside, which has a better centripetal effect and is not prone to asynchronous stroke between the power mechanism and the balancing mechanism, nor will it cause deviation of the arc center.

[0017] The guide rail body and the outer side wall described in this application can be integrally formed or separately designed. When the guide rail body and the outer side wall are separately designed, the position can be adjusted to put the device in the best working state, and the sawtooth part can be replaced to ensure the reliability of the application during operation, while also having the beneficial effects of reducing replacement costs and operating difficulty.

[0018] Furthermore, the reciprocating mentioned in this application refers to the cyclic motion process formed by the power mechanism pulling the balancing mechanism to slide to a predetermined position in one direction and then moving in the opposite direction. A simulator is mounted on the load-bearing platform above the balancing mechanism, and in the absence of any steering coordination of the load-bearing platform, the power mechanism and the balancing mechanism need to always point in the direction of the phased array radar to achieve scanning and identification of changing relationships and relative relationships in single or multiple fixed and / or mobile states, as well as resolution and identification of interference. When the power mechanism is pulling, the traction vibration generated is consumed on one side of the guide rail, and the power received by the balancing mechanism is the traction force, thereby ensuring the stability of the load-bearing platform set above the balancing mechanism.

[0019] Furthermore, the device also includes a fixing plate; the balancing mechanism is provided with a clamping groove corresponding to the fixing plate; the power mechanism includes a driving motor; one end of the fixing plate is clamped in the clamping groove, and the other end is provided with a driving motor position, and the driving motor is fixed on the driving motor position.

[0020] The snap-in slot is snapped with the fixed plate, and then fixed by the connecting structure. The fixed plate is used for parallel conduction of force, and the parallel conduction performance of force is excellent. The arc formed between the guide rail and the driven rail is realized by the fixed plate provided by the power mechanism and the balance mechanism to achieve the consistency of displacement and displacement angle, so that the directionality of the power mechanism and the balance mechanism is guaranteed; that is, in any process of displacement, the extension line of the line connecting the power mechanism and the balance mechanism always points to the direction of the arc center, ensuring that the direction of the signal sent by the simulator is always facing the arc center. Among them, the angle consistency mentioned is that the straight line connecting the power mechanism and the arc center passes through the balance mechanism, and the balance mechanism and the line connecting the arc center also pass through the power mechanism. During displacement, although the sliding distances of the two on the guide rail are different, due to the restriction of the fixed plate, the angle difference between the two is consistent. The higher the consistency, the better the test effect.

[0021] Furthermore, the power mechanism also includes a curved arm wire groove and a wire guard arm; the wire guard arm includes a guard plate arranged on the periphery of the driving gear; the driving motor is provided with a through hole for the driving shaft to pass through and connect with the driving gear, the driving motor is arranged above the fixing plate, and the driving gear is arranged below the fixing plate after passing through the through hole;

[0022] The wire guard arm is provided with a guard plate, one end of which is connected with the fixing plate and the guard plate is arranged on the periphery of the driving gear, and the other end is connected with the crank arm wire groove.

[0023] The present application provides a protective plate on the periphery of the driving gear to isolate the wire lines, etc., to prevent the driving gear from being entangled and causing damage, creating hidden dangers; by providing a curved arm wire trough and a wire guard arm, the problem of scattered lines is solved, which can easily cause line entanglement during the displacement process, thereby avoiding the smooth progress of the test being affected by the lines.

[0024] The balancing mechanism includes a balancing frame and a roller group; the roller group includes roller units connected to the balancing frame respectively, the roller unit includes an auxiliary wheel and a driven wheel, the driven wheel includes a roller shaft and a sliding bearing; the driven guide rail includes a driven side wall; the driven side wall includes a top surface. The auxiliary wheel plays a role in supporting and maintaining the sliding bearing when necessary.

[0025] The present application proposes a G-shaped balancing frame wrapped around a T-shaped driven guide rail to prevent it from falling off, thereby further ensuring the directionality and stability of the balancing mechanism. The driven wheel slides along the driven side wall, so that the driven wheel and the power mechanism form relative stress, offsetting the lateral vibration during the sliding process and making the overall mechanism stable and non-vibrating.

[0026] One end of the roller shaft is connected to the balance frame, and the other end is connected to the sliding bearing.

[0027] The connection is achieved through the roller shaft to ensure balance and avoid vibration. When vibration occurs, it will be minimized.

[0028] The sliding bearing is pressed against the driven side wall, and the auxiliary wheel is pressed against the sliding bearing and separated from the driven side wall. When the driven wheel and the auxiliary wheel are moving and the driven wheel is subjected to unbalanced force, the auxiliary wheel provides auxiliary force to maintain the current state; in the case of daily sliding, it may not be accompanied by rotation.

[0029] The sliding bearing moves on the driven side wall and moves on the side wall to ensure the smoothness of sliding.

[0030] One of the balancing mechanisms comprises at least two roller groups, and at least two of the roller groups are arranged on both sides of the driven guide rail. One of the roller groups comprises at least two roller units, and two adjacent roller units are arranged in a mirror image.

[0031] The guide rail device proposed in the present application realizes the balance of force and weight through group design, and sets roller groups in pairs or sets multiple roller groups, so that the clearance of the left and right swing of the balancing mechanism is maximized, and when subjected to left and right power, it will slip, making the movement of the device smoother and the force more balanced. At the same time, it can adjust and guide the overall direction of the balancing mechanism.

[0032] The balancing mechanism also includes a plurality of balancing blocks, any of which is fixed on a balancing frame, and the balancing block includes a contact surface, and the plurality of balancing blocks are arranged on both sides of the driven guide rail, and the contact surface is connected to the surface of the side surface.

[0033] By setting the balancing block, the balancing mechanism can obtain a second level of protection against swing when it generates swing, thus ensuring that the test data is more accurate.

[0034] The balancing mechanism comprises a plurality of balancing rollers, which are arranged between the balancing frame and the driven guide rail. The balancing rollers are located above the driven guide rail, and the straight line direction of any balancing roller is tangent to the arc of the driven guide rail at the location.

[0035] The present application realizes support for horizontal upward sliding through a balancing roller, so that the balancing mechanism as a whole can achieve balanced sliding during the sliding process, and can further ensure the balance of the sliding. The support in the vertical direction makes the sliding process smooth and vibration-free.

[0036] Further, the driven guide rail includes a guide rail base; the guide rail body is provided with a mounting groove for mounting the guide rail; a mounting position is provided corresponding to the sawtooth guide rail;

[0037] The guide rail is fixed in the mounting groove; the saw teeth are arranged on the mounting position; the driven rail includes an anti-falling plate arranged above the rail base and extending to both sides of the rail base, and the anti-falling plate is fixed to the top of the rail base.

[0038] By setting up the main power generating mechanism separately, it is easy to produce, assemble, maintain and replace vulnerable parts.

[0039] The guide rail device provided in the present application enhances the stability of the equipment during the sliding process by setting a double guide rail structure of a parallel guide rail and a driven guide rail, ensures the high quality of any signal of the simulator, and optimizes the test effect. The two respectively assume different operating functions. A power mechanism is provided on the guide rail to provide power, and a balancing mechanism is provided on the driven rail to add a bearing platform, and the bearing platform is the main structure for connecting with the simulator; the power mechanism and the balancing mechanism are fixed together and respectively placed on two parallel guide rails to form a stable carrying platform, and the power mechanism is separated from the balancing mechanism, so that the stability of the platform is guaranteed. The power mechanism pulls the balancing mechanism to slide on the guide rail and the driven rail respectively, and no vibration occurs, thereby ensuring the signal quality of the simulator. The connecting line distance from the guide rail to the driven rail at different positions is consistent, and the connecting line distance between the two closest points is equal. A power mechanism and a balancing mechanism are respectively mounted on the guiding guide rail and the driven guide rail. When the power mechanism is pulling, the traction vibration generated is consumed on the active guide rail side, so that the balancing mechanism side limits the vibration through roller groups, balancing blocks, etc. to ensure balance, thereby ensuring the stability of the bearing platform arranged above the balancing mechanism.

[0040] The guide rail device includes multiple ones, and the bearing platform on any guide rail device is provided with a lifting column and a carrying plate extending from the lifting column toward the arc center, one end of the carrying plate is fixedly connected to the lifting column and the other end is fixedly connected to the simulator, and the distances from the multiple simulators to the arc center are roughly equal.

[0041] The present application provides multiple sets of guide rails to perform multiple relative sliding or fixed position tests.

[0042] The present application sets up multiple sets of guide rails to conduct relative sliding or fixed position testing of multiple targets.

[0043] The test area includes a loading mechanism, which includes a horizontal adjustment mechanism capable of sliding in a first dimension along the direction of the second wall, and a front-to-back adjustment mechanism capable of sliding in a second dimension along a direction perpendicular to the second wall; the loading platform is arranged on the front-to-back adjustment mechanism and is rotatably connected to the front-to-back adjustment mechanism; the phased array radar is vertically arranged in front of the loading platform and is fixed to the loading platform;

[0044] A mechanical arm is also provided corresponding to the loading platform;

[0045] The partition height is higher than the loading mechanism and lower than the testing platform.

[0046] The test rail allows the stage to be moved laterally and the arc center position to be adjusted, further ensuring the accuracy of the test data. The partition surface is equipped with an absorbing structure to prevent echo formation.

[0047] A third wall is provided between the first wall and the second wall, an inspection window is provided on the first wall, a replacement window for replacing the phased array radar is provided on the second wall, and a door is provided on the third wall.

[0048] This application designs inspection windows and replacement windows to facilitate indoor inspection and testing, and also provides convenience for replacing phased array radars.

[0049] A phased array radar loading and unloading mechanism is arranged outside the darkroom to solve the problem of manual replacement of the phased array radar and avoid damage caused by human during assembly.

[0050] In summary, the phased array radar test system provided by the present application is not restricted by environmental factors. The robot in the test area is controlled by a central control computer to load, place and replace the phased array radar. The stage is powered and connected to the signal of the phased array radar, and exchanges data with the central control computer. After the central control computer obtains the loaded phased array radar signal, it sends a test instruction to the simulation area and the interference area to perform the test. The near-field test system of the phased array radar provided by the present application has a high degree of automation and high test efficiency, and is of great significance.

[0051] The present application also discloses a method for testing a phased array radar based on a phased array radar test system, which realizes comprehensive near-field testing of single simulation, multiple simulation, interference testing, etc. of an aviation airborne phased array radar. The testing method is realized as follows: the testing method includes a single testing method, a multiple testing method, an interference testing method, or an equivalent isotropic power (EIRP) testing method, or any combination of the above;

[0052] Among them, the single test method includes the following test steps:

[0053] Fix the radar to be tested on the stage through the test fixture, power on the radar to be tested and work in the normal working mode, and control the rotation of the stage through the central control computer to change the direction and angle of the radar to be tested.

[0054] Start the radar simulator through the central control computer and set different speeds, distances, angles, and RCS information.

[0055] The central control computer reads the speed, distance, angle, and RCS information received by the radar.

[0056] Record the maximum / minimum / intermediate detection distance, maximum speed / minimum speed / intermediate speed, positive detection angle / zero angle / negative detection angle, and RCS information of the angle position obtained by the test radar;

[0057] Among them, the multi-target test includes distance resolution, speed resolution and angle resolution tests.

[0058] Fix the radar to be tested on the stage through the test fixture, power on the radar to be tested and work in normal working mode. The distance resolution test includes the following steps:

[0059] Set up simulator 1 and simulator 2 through the central control computer so that they have the same initial position D1, angle and RCS compared to the radar.

[0060] Fix simulator 1 at position D1 and keep changing the distance between simulator 1 and simulator 2 step by step.

[0061] When the distance accuracy of the radar to be tested that can distinguish simulator 1 from simulator 2 meets the requirements, record the distance D2 at this time, and get the actual minimum distance resolution as |D1-D2|. Repeat the above distance resolution test steps, test N groups of data, calculate the average value of the resolution of N groups of data, and get the radar distance resolution.

[0062] The speed resolution test includes the following steps:

[0063] Set up simulator 1 and simulator 2 through the central control computer so that they have the same initial position D1, RCS and initial speed V1 compared to the radar.

[0064] The speed V1 of simulator 1 remains unchanged, and the speed of simulator 2 is changed. When the radar can distinguish the distance, angle and speed between simulator 1 and simulator 2, the speed of simulator 2 is recorded as V2, and the speed resolution is |V1-V2|. Repeat the above speed resolution test steps, test N groups of data, calculate the average value of the resolution of N groups of data, and get the radar speed resolution.

[0065] The angular resolution test includes the following steps:

[0066] Set up simulator 1 and simulator 2 through the central control computer so that they have the same initial position D1, RCS and angle position ￠1 compared to the radar.

[0067] The angle ￠1 of the fixed simulator 1 remains unchanged, and the angle of the simulator 2 is changed.

[0068] When the radar can distinguish the distance and RCS of simulator 1 and simulator 2, record the angle of simulator 2 as ￠2, then the angle resolution is |￠2-￠1|, repeat the above angle resolution test steps, test N groups of data, calculate the average value of the resolution of N groups of data, which is the radar angle resolution;

[0069] The measured distance resolution, radar velocity resolution and radar angle resolution are the multi-target test values ​​of the measured radar;

[0070] The interference test includes the following steps:

[0071] Fix the radar to be tested on the turntable of the object to be tested through the test fixture. Power on the radar to be tested and work in the normal working mode. Set the initial position, speed and RCS value of the simulator through the central control computer.

[0072] Start the interference source through the central control computer and set the interference signal amplitude emitted by the interference source to be 20dB lower than the radar index;

[0073] Increase the interference signal amplitude in steps at a time interval not less than a specific time interval until the performance of the radar under test deviates from or reaches the preset data, and record the test data;

[0074] The equivalent isotropic power (EIRP) test includes the following steps:

[0075] Fix the radar to be tested on the turntable of the object to be tested through the test fixture, power on the radar to be tested and work in normal working mode, start the spectrum analyzer or power meter through the central control computer,

[0076] Rotate the radar to be tested horizontally by the stage and record the output power at each angle in the horizontal direction.

[0077] Rotate the radar under test in the pitch direction by using the stage, and record the output power at each angle in the pitch direction.

[0078] The radar equivalent isotropic power EIRP is obtained by obtaining the peak values ​​in the horizontal and elevation directions through the central control computer.

[0079] The present application proposes a method for testing a phased array radar based on a phased array radar test system. By using a guide rail device with good balance and high displacement accuracy, and a fixing plate provided on the guide rail device to adjust the simulator to be consistent with the straight-line distance of the radar as much as possible, the near-field test can be performed with higher accuracy. The test subjects include but are not limited to single simulation, multiple simulation, interference test and other comprehensive near-field tests. It can fundamentally solve the problems of many phased array radar test subjects and large task volume, and is of great significance. BRIEF DESCRIPTION OF THE DRAWINGS

[0080] Figure 1 It is a planar structural diagram of each functional area in the darkroom and each mechanism in the functional area;

[0081] Figure 2 It is a schematic diagram of the layout structure of the dismantled wall of the darkroom;

[0082] Figure 3 yes Figure 1 Schematic diagram of the three-dimensional structure;

[0083] Figure 4 It is a schematic diagram of the partial explosion structure of the guide rail device;

[0084] Figure 5 yes Figure 4 A partial enlarged view of part A;

[0085] Figure 6 It is a schematic diagram of the structure of the guide rail device;

[0086] Figure 7 yes Figure 6 A partial enlarged view of part B;

[0087] Figure 8 yes Figure 6 A partial enlarged view of the C part;

[0088] Fig. 9 yes Figure 6 A partial enlarged view of the D part;

[0089] Fig.10 It is a schematic diagram of the structure of the carrier mechanism.

[0090] Description of reference numerals:

[0091] 100, simulation area; 110, guide rail; 111, guide rail body; 112, outer wall; 113, sawtooth; 114, mounting groove; 120, power mechanism; 121, drive motor; 122, guard plate; 123, wire guard arm; 124, drive shaft; 125, drive gear; 126, crank wire groove; 130, driven rail; 131, rail base; 132, anti-drop plate; 140, balance mechanism; 141, balance frame; 1411, bearing platform; 1412, clamping groove; 142, balance roller Wheel; 143, roller assembly; 1431, roller unit; 14311, driven wheel; 143111, roller shaft; 143112, sliding bearing; 1432, auxiliary wheel; 144, balance block; 150, fixed plate; 200, interference area; 210, interference source; 300, test area; 310, loading mechanism; 311, horizontal adjustment mechanism; 312, front and rear adjustment mechanism; 313, loading platform; 314, phased array radar; 500, partition; 600, steel frame roller; 700, steel structure; 800, darkroom. DETAILED DESCRIPTION

[0092] The following is combined with Figure 1-10 This application is described in further detail.

[0093] like Figure 1 , Figure 2 and Figure 3 As shown, a phased array radar 314 test system proposed in the present application has a partition 500 in a darkroom 800, a simulation area 100 and an interference area 200 are provided on one side of the partition 500, and a phased array radar 314 test area 300 is provided on the other side, and the darkroom 800 includes a first wall (not shown) and a second wall (not shown) arranged opposite to each other; the simulation area 100 is arranged close to the first wall, and the test area 300 is arranged close to the second wall; the simulation area 100 includes a simulation area 100 and an interference area 200. The simulator (not shown), the guide rail device (not shown) and the simulation platform (not shown) built under the guide rail device, the simulator is set on the guide rail device; the test area 300 is provided with a stage 313, the stage 313 is used to load the phased array radar 314; the interference area 200 is provided with an interference source 210; the central control system includes a central control computer (not shown), the central control computer is connected to the guide rail device; the central control computer is connected to the interference source 210; the central control computer is electrically connected to the stage 313. Among them, the walls, ground and roof of the darkroom 800 are respectively provided with absorbing materials.

[0094] like Figure 4 , Figure 5As shown, the test system includes a guide rail device (not shown), which is equipped with a guide rail 110 and a driven rail 130 arranged in parallel; a power mechanism 120 is provided on the guide rail 110, a balancing mechanism 140 is provided on the driven rail 130, and a bearing platform 1411 is provided above the balancing mechanism 140. A simulator can be carried on the bearing platform 1411. The power mechanism 120 and the balancing mechanism 140 provided on the two rails form a line with two rails, and the balancing mechanism 140 is carried on the guide rail device (not shown). The double rail structure of the parallel guide rail 110 and the driven rail 130 enhances the stability of the equipment during the sliding process and ensures that the signal sent by the simulator at any position during the movement can be guaranteed. The power mechanism 120 pulls the balancing mechanism 140 to slide on the guide rail 110 and the driven rail 130 respectively. The power mechanism 120 is separated from the balancing mechanism 140 to solve the vibration problem generated by the driving motor 121 during operation so that it does not affect the balancing mechanism 140, thereby ensuring the balance and stability of the carrier 1411 without vibration. The guide rail device (not shown) is used as the high balance stability of the carrying platform itself, and the balancing mechanism 140 and the power mechanism 120 are further assembled on two guide rails respectively to improve the balance stability of the device.

[0095] like Figure 5 , Figure 6 As shown, as a preferred solution, the guide rail 110 and the driven rail 130 described in this application can be linear, arc-shaped, annular, and a combination of one or more of the above structures. When the guide rail device is linear, the angle can be adjusted by the carrier 1411; when the guide rail device is arc-shaped or annular, the phased array radar 314 is set at the arc center or circle center of the guide rail device. The purpose of the above design is to ensure that when the simulator sends a signal to the phased array radar 314, the signal sent always points to the phased array radar 314.

[0096] like Figure 4 , Figure 7 As shown, the guide rail 110 and the driven rail 130 of the present application are offset circular arcs with the same arc center, and the distance between the relative positions of the two is consistent. Since the two are fixedly connected, matching stresses are formed so that the extension line of the connection line of the power mechanism 120 and the balance mechanism 140 always passes through the arc center, so the radius difference between the guide rail 110 and the driven rail 130 is equal.

[0097] like Figure 4 , Figure 5As shown, the guide rail 110 includes a guide rail body 111, and the guide rail body 111 includes an outer wall 112 away from the arc center, and the outer wall 112 is provided with a sawtooth 113; the power mechanism 120 includes a drive shaft 124, and the drive shaft 124 is provided with a drive gear 125 corresponding to the sawtooth 113, and the drive gear 125 is meshed with the sawtooth 113. The present application needs to ensure that any step of the operation of the device, including starting and stopping, is smooth and vibration-free, so a gear structure is selected to avoid slippage during starting or operation, and to ensure that the real-time data is accurate. However, the use of a non-meshing structure, such as a smooth roller surface, a pneumatic or hydraulic drive balancing mechanism 140 to achieve traction should also be regarded as the essence of the present application.

[0098] like Figure 5 , Fig. 9 As shown, the balancing mechanism 140 proposed in the present application is provided with a snap-in groove 1412 corresponding to the fixed plate 150; the power mechanism 120 includes a drive motor 121; one end of the fixed plate 150 is snap-into the snap-in groove 1412, and the other end is provided with a drive motor position (not marked), and the drive motor 121 is fixed on the drive motor position (not marked). It is foreseeable that the drive motor 121 can be arranged on the left and right sides of the fixed plate 150, and also on the outside or below the end of the fixed plate 150. The drive motor 121 is arranged at one end of the fixed plate 150, and a through hole is opened on the fixed plate 150 for the rotation shaft of the drive motor 121 to pass through. The drive motor 121 is located above the fixed plate 150 and is fixed to the fixed plate 150.

[0099] like Figure 5 , Fig. 9 As shown, as a preferred solution, the driving motor 121 is meshed with the saw teeth 113 via the driving gear 125 at the bottom, and is connected to the balancing mechanism 140 via the fixing plate 150 at the top.

[0100] As shown in FIG5 , the power mechanism 120 provided by the present application also includes a crank arm wire groove 126 and a wire guard arm 123; the wire guard arm 123 includes a guard plate 122 arranged on the periphery of the driving gear 125; the driving motor position (not shown) is provided with a through hole for the driving shaft 124 to pass through and connect with the driving gear 125, and the driving gear 125 is arranged below the fixed plate 150; the wire guard arm 123 is provided with a guard plate 122 at one end connected to the fixed plate 150, the guard plate 122 is arranged on the periphery of the driving gear 125, and the other end is connected to the crank arm wire groove 126. The power line and other signal lines are installed in the crank arm wire groove 126. In the lateral direction, the crank arm wire groove 126 moves with the movement of the guide rail device, and the lines will not be scattered; further, the wire guard arm 123 guides in the longitudinal direction and prevents the power mechanism 120 and the balance mechanism 140 from being stuck.

[0101] like Figure 5 , Figure 6 and Fig. 9 As shown, the balancing mechanism 140 provided in the present application is provided with a balancing frame 141 and a roller group 143; the roller group 143 includes a roller unit 1431 arranged corresponding to the balancing frame 141, the roller unit 1431 includes an auxiliary wheel 1432 and a driven wheel 14311, the driven wheel 14311 includes a roller shaft 143111 and a sliding bearing 143112; the driven guide rail 130 includes a driven side wall (not marked); the driven side wall includes a top surface (not marked) and a side surface (not marked); one end of the roller shaft 143111 is connected to the balancing frame 141, and the other end is connected to the sliding bearing 143112; the sliding bearing 143112 is connected to the driven side wall, and the auxiliary wheel 1432 is connected to the sliding bearing 143112 and is separated from the driven side wall.

[0102] like Figure 5 As shown, a balancing mechanism 140 includes at least two roller groups 143, and at least two roller groups 143 are disposed on both sides of the driven guide rail 130. A roller group 143 includes at least two roller units 1431, and two adjacent roller units 1431 are disposed in a mirror image.

[0103] like Figure 5 , Fig. 9 As shown, as a preferred solution, the roller units 1431 include four, and any two roller groups 143 are arranged in mirror image. Preferably, the roller units 1431 are located on the same side or different sides of the driven guide rail 130 to ensure smooth balance.

[0104] like Figure 5 As shown, as a preferred solution, the roller units 1431 include six, and three of the six roller units 1431 are respectively provided on both sides of the driven guide rail 130, and the three roller units 1431 on the same side form an arc surface arrangement connected to the arc surface of the driven guide rail 130.

[0105] like Figure 5 As shown, as a preferred solution, the number of roller units 1431 can also be three, with one on one side of the driven guide rail 130 and two on the other side.

[0106] like Figure 5 , Fig. 9 As shown, of course, the roller unit 1431 can also be arranged in other combinations, which will not be described in detail here.

[0107] As shown in FIG. 5 , it can be understood that the rollers on one side of the driven guide rail 130 can be combined into a roller set 143 .

[0108] like Figure 5As shown, any balancing block 144 is fixed on the balancing frame 141, and the balancing block 144 includes a contact surface. A plurality of balancing blocks 144 are arranged on both sides of the driven guide rail 130, and the contact surface is in contact with the side wall surface; preferably, the contact surface is close to the side wall surface, and no friction force is formed or the friction force can be ignored. The balancing block 144 is provided to further ensure the stable operation of the balancing mechanism 140, which can prevent the involvement of foreign objects, and a stabilizing block is provided at least at each of the four ends of the stabilizing frame.

[0109] like Figure 4 , Figure 5 As shown, the balancing mechanism 140 includes a plurality of balancing rollers 142, which are disposed between a balancing frame 141 and a driven guide rail 130, the balancing rollers 142 are located above the driven guide rail 130, and the balancing rollers 142 are located in the tangential direction of the driven guide rail 130. The movement of the balancing rollers 142 is guided by other parts of the balancing mechanism 140 to perform self-adjustment of the angle.

[0110] like Figure 4 , Figure 5 As shown, as a preferred embodiment, the balancing roller 142 can be set as a plane bearing (not marked), which is arranged between the balancing frame 141 and the driven guide rail 130 and is located above the driven guide rail 130. The plane bearing (not marked) is a structure that separates multiple balls, and the top of each ball is connected to the balancing frame 141, and the bottom is pressed against the top surface of the driven guide rail 130. The structure that separates the balls is a ball separation plate, which is connected to the balancing frame 141.

[0111] like Figure 5 , Figure 6 and Fig. 9 As shown, as a preference, a plurality of rollers are provided between the driven guide rail 130 and the balance frame 141 in the vertical direction along the tangential direction of the driven guide rail 130 , and the number of the rollers is three, four, five or more, preferably four.

[0112] like Figure 7 As shown, a mounting groove 114 for mounting the guide rail 110 is provided on the guide rail body 111, and the guide rail 110 is fixed in the mounting groove 114; a mounting position (not marked) is provided for the guide rail 110 corresponding to the sawtooth 113, and the sawtooth 113 is arranged on the mounting position; the driven guide rail 130 includes a guide rail base 131 and an anti-falling plate 132 arranged above the guide rail base 131 and extending to both sides of the guide rail base 131, and the anti-falling plate 132 is fixed to the top of the guide rail base 131.

[0113] like Figure 7 , Figure 8As shown, as a preferred solution, the guide rail body 111 can be connected to the mounting groove 114 by means of a connection method such as a snap connection and / or a screw connection; similarly, the sawtooth 113 and the guide rail 110 can also be fixed by means of a snap connection and / or a screw connection. During the traction process, both the guide rail 110 and the sawtooth 113 may be worn out, and the split design facilitates replacement and maintenance. The anti-fall-off plate 132 and the guide rail base 131 form a T-shaped structure, wherein the anti-fall-off plate 132 is detachably assembled with the guide rail base 131.

[0114] like Figure 7 , Figure 8 As shown, in the guide rail device proposed in the present application, the distance between the guide rail 110 and the driven rail 130 is always kept straight, that is, the distance between the closest connecting lines of the guide rail 110 and the driven rail 130 is equal. The guide rail 110 and the driven rail 130 are respectively equipped with a power mechanism 120 and a balancing mechanism 140. The power mechanism 120 provides or generates power, and the balancing mechanism 140 plays a role in sustainable balanced and stable sliding, so that the balancing equipment carried thereon does not vibrate. The power traction is separated from the carrying and balancing, which has the following advantages: First, during the operation of the guide rail device, its directivity must be ensured. By separating the power mechanism 120 and the balancing mechanism 140, the directivity is ensured by adjusting the positional relationship between the two. The problem is fundamentally solved in terms of structure; secondly, the sliding of the power mechanism 120 and the balancing mechanism 140 on the guide rail 110 and the driven rail 130 is continuous and reciprocating, and vibration is likely to occur when turning back. The above-mentioned separation design solves this technical problem; thirdly, by separating the power mechanism and the balancing mechanism 140, the vibration of the power mechanism 120 itself during operation is separated, so that the stability of the balancing mechanism 140 is improved, and then it is simpler and easier to solve the vibration problem on one side of the power mechanism 120.

[0115] like Figure 5 , Fig. 9 As shown, the above reciprocating refers to the cyclic motion process in which the power mechanism 120 pulls the balancing mechanism 140 to slide to a predetermined position in one direction and then moves in the opposite direction. A simulator is mounted on the carrier 1411 provided above the balancing mechanism 140, and when the carrier 1411 does not make any steering coordination, the power mechanism 120 and the balancing mechanism 140 need to always point to the phased array radar 314 to achieve scanning and recognition of the changing relationship and relative relationship in a single or multiple fixed and / or mobile state, as well as the resolution and recognition of interference. When the power mechanism 120 is pulling, the traction vibration generated is consumed on one side of the guide rail 110, and the power received by the balancing mechanism 140 is the traction force, thereby ensuring the stability of the carrier 1411 provided above the balancing mechanism 140.

[0116] like Figure 1 , Fig.10 As shown, the test area 300 includes a loading mechanism 310, and the loading mechanism 310 includes a horizontal adjustment mechanism 311 that can slide in the first dimension along the direction of the second wall, and a front-back adjustment mechanism 312 that can slide in the second dimension perpendicular to the second wall; a loading platform 313 is arranged above the loading mechanism 310, and is rotatably connected to the loading mechanism 310; a phased array radar 314 is vertically arranged in front of the loading platform 313; a mechanical arm is also arranged corresponding to the loading platform 313, and specifically, the mechanical arm is arranged outside the darkroom corresponding to the loading platform; the partition 500 is higher than the loading mechanism 310 and lower than the test platform. Furthermore, the circuits for realizing the structure of sliding in the first dimension and the structure of sliding in the second dimension can also be arranged through the curved arm wire groove 126 and the wire guard arm 123.

[0117] like Figure 2 As shown, a third wall is provided between the first wall and the second wall, an inspection window is provided on the first wall, a replacement window for replacing the phased array radar 314 is provided on the second wall, and a door is provided on the third wall.

[0118] like Figure 2 , Figure 3 As shown, as a preference, a loading and unloading mechanism for the phased array radar 314 is provided outside the darkroom 800 to solve the problem of manual replacement of the phased array radar 314 and avoid damage caused by human factors during assembly.

[0119] like Figure 3 As shown, preferably, the darkroom 800 includes a steel frame 700 , and a steel frame roller 600 is provided at the lower portion of the steel frame 700 .

[0120] The implementation principle of this embodiment is: by combining the arc guide rail with the movable stage 313, a positional relationship between the arc segment and the arc center is formed, so that the position of the phased array radar 314 and the simulator remains consistent during the test. Without being restricted by environmental factors, the robot in the test area 300 is controlled by the central control computer to load, place and replace the phased array radar 314. The stage 313 provides power and signal connection for the phased array radar 314 and exchanges data with the central control computer. After the central control computer obtains the signal of the loaded phased array radar 314, it sends a test instruction to the simulation area 100 and the interference area 200 to perform the test.

[0121] The present application also discloses a method for testing a phased array radar 314 based on a phased array radar 314 test system, which implements comprehensive near-field testing of single simulation, multiple simulation, interference testing, etc. of an aviation airborne phased array radar 314. The testing method is implemented as follows:

[0122] Among them, the single test method includes the following test steps:

[0123] The radar to be tested is fixed on the stage 313 by the test fixture, the radar to be tested is powered on and works in the normal working mode, and the rotation of the stage 313 is controlled by the central control computer to change the direction and angle of the radar to be tested.

[0124] Start the radar simulator through the central control computer and set different speeds, distances, angles, and RCS information.

[0125] The central control computer reads the speed, distance, angle, and RCS information received by the radar.

[0126] Record the maximum / minimum / intermediate detection distance, maximum speed / minimum speed / intermediate speed, positive detection angle / zero angle / negative detection angle, and RCS information of the angle position obtained by the test radar. Test the basic performance of the phased array radar 314 through target detection.

[0127] Among them, the multi-target test includes distance resolution, speed resolution and angle resolution tests. The radar to be tested is fixed on the stage 313 through a test fixture. The radar to be tested is powered on and works in a normal working mode. The distance resolution test includes the following steps:

[0128] Set up simulator 1 and simulator 2 through the central control computer so that they have the same initial position D1, angle and RCS compared to the radar.

[0129] Fix simulator 1 at position D1 and keep changing the distance between simulator 1 and simulator 2 step by step.

[0130] When the distance accuracy of the radar to be tested that can distinguish simulator 1 from simulator 2 meets the requirements, record the distance D2 at this time, and get the actual minimum distance resolution as |D1-D2|. Repeat the above distance resolution test steps, test N groups of data, calculate the average value of the resolution of N groups of data, and get the radar distance resolution.

[0131] The speed resolution test includes the following steps:

[0132] Set up simulator 1 and simulator 2 through the central control computer so that they have the same initial position D1, RCS and initial speed V1 compared to the radar.

[0133] The speed V1 of simulator 1 remains unchanged, and the speed of simulator 2 is changed. When the radar can distinguish the distance, angle and speed between simulator 1 and simulator 2, the speed of simulator 2 is recorded as V2, and the speed resolution is |V1-V2|. Repeat the above speed resolution test steps, test N groups of data, calculate the average value of the resolution of N groups of data, and get the radar speed resolution.

[0134] The angular resolution test includes the following steps:

[0135] Set up simulator 1 and simulator 2 through the central control computer so that they have the same initial position D1, RCS and angle position ￠1 compared to the radar.

[0136] The angle ￠1 of the fixed simulator 1 remains unchanged, and the angle of the simulator 2 is changed.

[0137] When the radar can distinguish the distance and RCS of simulator 1 and simulator 2, record the angle of simulator 2 as ￠2, then the angle resolution is |￠2-￠1|, repeat the above angle resolution test steps, test N groups of data, calculate the average value of the resolution of N groups of data, which is the radar angle resolution;

[0138] The measured distance resolution, radar speed resolution and radar angle resolution are the multi-target test values ​​of the measured radar. Through the multi-target test, the test of complex technical indicators such as accuracy and resolution of the phased array radar 314 is completed.

[0139] The interference test includes the following steps:

[0140] Fix the radar to be tested on the turntable of the object to be tested through the test fixture. Power on the radar to be tested and work in the normal working mode. Set the initial position, speed and RCS value of the simulator through the central control computer.

[0141] Start the interference source 210 through the central control computer, and set the interference signal amplitude emitted by the interference source 210 to be 20dB lower than the radar index;

[0142] Increase the interference signal amplitude in steps at a time interval not less than a specific time interval until the performance of the radar under test deviates from or reaches the preset data, and record the test data;

[0143] Preferably, the interference signal amplitude is increased by 3 dB at a time interval of not less than 8 seconds until the performance of the radar to be tested deviates from or reaches a preset data, and the test data is recorded. Optionally, the interference signal amplitude is increased by 5 dB at a time interval of not less than 5 seconds until the performance of the radar to be tested deviates from or reaches a preset data, and the test data is recorded. Optionally, the interference signal amplitude is increased by 8 dB at a time interval of not less than 3 seconds until the performance of the radar to be tested deviates from or reaches a preset data, and the test data is recorded. The shorter the adjustment time interval, the higher the sensitivity requirement for the radar. It should be noted that the time and step-by-step adjustment of the interference signal strength described in this embodiment can be adjusted according to the actual test needs to set the value of the adjustment time and the adjustment interference signal strength.

[0144] The equivalent isotropic power (EIRP) test includes the following steps:

[0145] Fix the radar to be tested on the turntable of the object to be tested through the test fixture, power on the radar to be tested and work in normal working mode, start the spectrum analyzer or power meter through the central control computer,

[0146] Rotate the radar to be tested horizontally by the stage 313, and record the output power at each angle in the horizontal direction.

[0147] The radar to be tested is rotated in the pitch direction by the stage 313, and the output power at each angle in the pitch direction is recorded.

[0148] The radar equivalent isotropic power EIRP is obtained by obtaining the peak values ​​in the horizontal and elevation directions through the central control computer.

[0149] The above are all preferred embodiments of the present application. The same mentioned in the present application should be understood as similar, close to, and equal; the protection scope of the present application is not limited thereto. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A phased array radar test system, characterized in that: Including darkroom (800) and central control system, A partition (500) is provided in the darkroom (800), a simulation area (100) and an interference area (200) are provided on one side of the partition (500), and a test area (300) of a phased array radar (314) is provided on the other side, the darkroom (800) comprises a first wall and a second wall arranged opposite to each other; the simulation area (100) is arranged close to the first wall, and the test area (300) is arranged close to the second wall; The simulation area (100) comprises a simulator, a guide rail device and a simulation platform built below the guide rail device, wherein the simulator is arranged on the guide rail device; the test area (300) is provided with a loading platform (313), wherein the loading platform (313) is used to load a phased array radar (314); the interference area (200) is provided with an interference source (210), wherein the interference source (210) is arranged corresponding to the phased array radar (314); The central control system comprises a central control computer, the central control computer is control-connected to the guide rail device; the central control computer is control-connected to the interference source (210); the central control computer is electrically connected to the loading platform (313); The guide rail device comprises a guide rail (110) and a driven rail (130) arranged in parallel, a power mechanism (120) being arranged on the guide rail (110), a balancing mechanism (140) being arranged on the driven rail (130), a bearing platform (1411) being arranged above the balancing mechanism (140) and a fixing plate (150) for connecting the balancing mechanism (140) and the power mechanism (120); the power mechanism (120) being arranged on the guide rail (110) so as to pull the balancing mechanism (140), the balancing mechanism (140) being slidably arranged on the driven rail (130), the guide rail (110) and the driven rail (130) being arc-shaped or annular, or a combination of one or more of the above structures; when the guide rail device is arc-shaped or annular, the phased array radar (314) is arranged on the arc center or the circle center of the guide rail device; The guide rail (110) and the driven rail (130) are in the shape of circular arcs with the same arc center, and the shortest connecting line distance between the guide rail (110) and the driven rail (130) is equal; the guide rail (110) comprises a guide rail body (111), the guide rail body (111) comprises an outer wall (112) away from the arc center, and the outer wall (112) is provided with saw teeth (113); the power mechanism (120) comprises a driving shaft (124), and the driving shaft (124) is provided with a driving gear (125) corresponding to the saw teeth (113), and the driving gear (125) is meshed with the saw teeth (113); The balancing mechanism (140) is provided with a clamping groove (1412) corresponding to the fixing plate (150); the power mechanism (120) comprises a driving motor (121); one end of the fixing plate (150) is clamped in the clamping groove (1412) and the other end is provided with a driving motor position, and the driving motor (121) is fixed on the driving motor position; The driven guide rail (130) comprises a guide rail base (131); the guide rail body (111) is provided with a mounting groove (114) for mounting the guide rail (110); and the guide rail (110) is provided with a mounting position corresponding to the sawtooth (113); The guide rail (110) is fixed in the installation groove (114); the saw teeth (113) are arranged on the installation position; the driven rail (130) includes an anti-falling plate (132) arranged above the rail base (131) and extending to both sides of the rail base (131), and the anti-falling plate (132) is fixed to the top of the rail base (131); The balancing mechanism (140) comprises a balancing frame (141) and a roller group (143); one of the balancing mechanisms (140) comprises at least two roller groups (143), and the roller groups (143) are arranged on both sides of the driven guide rail (130); the roller group (143) comprises balancing rollers (142) respectively connected to the balancing frame (141); the roller unit (1431) comprises an auxiliary wheel (1432) and a driven wheel (14311); the driven wheel (14311) comprises a roller shaft (143111) and a sliding bearing (143112); the driven guide rail (130) comprises a driven side wall; the driven side wall comprises a top surface and a side surface; One end of the roller shaft (143111) is connected to the balance frame (141), and the other end is connected to the sliding bearing (143112); The sliding bearing (143112) is pressed against the top surface, the auxiliary wheel (1432) is pressed against the sliding bearing (143112), and the auxiliary wheel (1432) is separated from the side surface.

2. The test system according to claim 1, characterized in that: The power mechanism (120) further comprises a curved arm wire groove (126) and a wire guard arm (123); the wire guard arm (123) comprises a guard plate (122) arranged at the periphery of the driving gear (125); the driving motor position comprises a through hole for the driving shaft (124) to pass through and then connect with the driving gear (125); the driving motor (121) is arranged above the fixing plate (150), and the driving gear (125) is arranged below the fixing plate (150); The wire guard arm (123) is provided with a guard plate (122) having one end connected to the fixing plate (150) and the other end connected to the curved arm wire groove (126).

3. The test system according to claim 1, characterized in that: The balancing mechanism (140) further comprises a plurality of balancing blocks (144); any of the balancing blocks (144) is fixed on a balancing frame (141); the balancing block (144) comprises a contact surface; the plurality of balancing blocks (144) are arranged on both sides of the driven guide rail (130); the contact surface is in contact with the surface of the side surface; one of the roller groups (143) comprises at least two roller units (1431), and two adjacent roller units (1431) are arranged in a mirror image.

4. The test system according to claim 1, characterized in that: The balancing mechanism (140) comprises a plurality of balancing rollers (142), wherein the plurality of balancing rollers (142) are arranged between a balancing frame (141) and a driven guide rail (130), wherein the balancing rollers (142) are located above the driven guide rail (130), and the straight line direction where any of the balancing rollers (142) are located is tangent to the arc of the driven guide rail (130) at the location.

5. The test system according to claim 1, characterized in that: The guide rail device comprises a plurality of guide rail devices, and a support platform (1411) on any guide rail device is provided with a lifting column and a carrying plate extending from the lifting column toward the arc center, one end of the carrying plate is fixedly connected to the lifting column and the other end is fixedly connected to the simulator, and the distances from the plurality of simulators to the arc center are substantially equal.

6. The test system according to claim 1, characterized in that: The test area (300) comprises a loading mechanism (310), the loading mechanism (310) comprising a horizontal adjustment mechanism (311) capable of sliding in a first dimension along a second wall direction, and a front-back adjustment mechanism (312) capable of sliding in a second dimension along a direction perpendicular to the second wall; the loading platform (313) is arranged on the front-back adjustment mechanism (312) and is rotatably connected to the front-back adjustment mechanism (312); the phased array radar (314) is vertically arranged in front of the loading platform (313) and is fixed to the loading platform (313); Corresponding to the object stage (313), a mechanical arm is also provided outside the darkroom; The height of the partition (500) is higher than the loading mechanism (310) and lower than the testing platform.

7. The test system according to claim 1, characterized in that: A third wall is provided between the first wall and the second wall, a maintenance window is provided on the first wall, a replacement window for replacing the phased array radar (314) is provided on the second wall, and a door is provided on the third wall.

8. A method for testing a phased array radar, characterized in that: A test system applied to any one of claims 1 to 7, wherein the test method comprises a single test method, a multiple test method, an interference test method or an equivalent isotropic power (EIRP) test method, or any combination of the above; Among them, the single test method includes the following test steps: The radar to be tested is fixed on the stage (313) by means of a test fixture, and the radar to be tested is powered on and operates in a normal working mode. The central control computer controls the rotation of the stage (313) to change the orientation and angle of the radar to be tested. Start the radar simulator through the central control computer and set different speeds, distances, angles, and RCS information. The central control computer reads the speed, distance, angle, and RCS information received by the radar. Record the maximum / minimum / intermediate detection distance, maximum speed / minimum speed / intermediate speed, positive detection angle / zero angle / negative detection angle, and RCS information of the angle position obtained by the test radar; Among them, the multi-target test includes distance resolution, speed resolution and angle resolution tests. The radar to be tested is fixed on the stage (313) by means of a test fixture, and the radar to be tested is powered on and operates in a normal working mode. The distance resolution test includes the following steps: Set up simulator 1 and simulator 2 through the central control computer so that they have the same initial position D1, angle and RCS compared to the radar. Fix simulator 1 at position D1 and keep changing the distance between simulator 1 and simulator 2 step by step. When the distance accuracy of the radar to be tested to distinguish between simulator 1 and simulator 2 meets the requirements, the distance D2 at this time is recorded, and the actual minimum distance resolution is obtained as |D1.D2|. Repeat the above distance resolution test steps to test N groups of data, calculate the average value of the resolution of the N groups of data, and obtain the radar distance resolution; The speed resolution test includes the following steps: Set up simulator 1 and simulator 2 through the central control computer so that they have the same initial position D1, RCS and initial speed V1 compared to the radar. The speed V1 of simulator 1 remains unchanged, and the speed of simulator 2 is changed. When the radar can distinguish the distance, angle and speed between simulator 1 and simulator 2, the speed of simulator 2 is recorded as V2, and the speed resolution is |V1.V2|. Repeat the above speed resolution test steps to test N groups of data, calculate the average value of the resolution of the N groups of data, and obtain the radar speed resolution; The angular resolution test includes the following steps: Set up simulator 1 and simulator 2 through the central control computer so that they have the same initial position D1, RCS and angle position ￠1 compared to the radar. The angle ￠1 of the fixed simulator 1 remains unchanged, and the angle of the simulator 2 is changed. When the radar can distinguish the distance and RCS of the simulator 1 and the simulator 2, the angle of the simulator 2 is recorded as ￠2. The angle resolution is |￠2.￠1|. Repeat the above angle resolution test steps to test N groups of data, and calculate the average value of the resolution of the N groups of data, which is the radar angle resolution; The measured distance resolution, radar velocity resolution and radar angle resolution are the multi-target test values ​​of the measured radar; The interference test includes the following steps: Fix the radar to be tested on the turntable of the object to be tested through the test fixture, power on the radar to be tested and work in normal working mode. Set the simulator's initial position, speed, and RCS value through the central control computer. The interference source (210) is started through the central control computer, and the interference signal amplitude emitted by the interference source (210) is set to be 20 dB lower than the radar index; Increase the interference signal amplitude in steps at a time interval not less than a specific time interval until the performance of the radar under test deviates from or reaches the preset data, and record the test data; The equivalent isotropic power (EIRP) test includes the following steps: Fix the radar to be tested on the turntable of the object to be tested through the test fixture, power on the radar to be tested and work in normal working mode. Start the spectrum analyzer or power meter through the central control computer. The radar to be tested is rotated horizontally by means of a stage (313), and the output power at each angle in the horizontal direction is recorded. The radar to be tested is rotated in the pitch direction by means of the object platform (313), and the output power at each angle in the pitch direction is recorded. The radar equivalent isotropic power EIRP is obtained by obtaining the peak values ​​in the horizontal and elevation directions through the central control computer.

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