CN113671469A - Phased array radar test system and method for testing phased array radar - Google Patents

Abstract

The application discloses a phased array radar test system and a method for testing a phased array radar, the phased array radar test system comprises a darkroom and a control system, wherein a partition is arranged in the darkroom, a simulation area and an interference area are arranged on one side of the partition, a test area of the phased array radar is arranged on the other side of the interference area, and the darkroom comprises a first wall body and a second wall body which are arranged oppositely; the simulation area is arranged close to the first wall body, and the test area is arranged close to the second wall body; the simulation area comprises a simulator, a guide rail device and a simulation platform built below the guide rail device, and the simulator is arranged on the guide rail device; the test area is provided with an objective table, and the objective table is used for loading the phased array radar; the interference area is provided with an interference source; the central control system comprises a central control computer which is connected with the guide rail device in a control way; the central control computer is connected with the interference source in a control way; the central control computer is electrically connected with the objective table.

Description

Phased array radar test system and method for testing phased array radar

Technical Field

The application relates to a phased array radar near field test system, in particular to a phased array radar test system and a method for testing a phased array radar.

Background

A Phased Array Radar (PAR) is a radar that changes the beam direction by changing the phase of a radar wave, and is known as a phased array antenna. A typical phased array radar uses digitally controlled phase shifters to change the phase distribution of antenna elements to achieve fast scanning of beams, rather than the traditional way of mechanically rotating the antenna surface, which is also called an Electronically Scanned Array (ESA) radar. Phased array radars are divided into two types, namely passive phased arrays and active phased arrays, and compared with the traditional radars, the two types of phased array radars have great technical advantages.

Currently, phased array radar technology is widely applied to various radar systems for military, civil use and the like. With the development and wide application of the phased array radar technology, the test projects are multiple, the task load is large, the traditional far field test time is long, and the development of an antenna near field test system suitable for the detection of the phased array radar system is more urgent. Particularly, no perfect near-field test system of the airborne phased array radar exists at present.

In view of the above, it is necessary to provide a phased array radar testing system and a method for testing a phased array radar.

Disclosure of Invention

In order to solve the technical problem, the application provides a phased array radar near field test system.

The phased array radar test system provided by the application adopts the following technical scheme:

a phased array radar test system comprises a darkroom and a control system,

a partition is arranged in the darkroom, a simulation area and an interference area are arranged on one side of the partition, a phased array radar test area is arranged on the other side of the interference area, and the darkroom comprises a first wall body and a second wall body which are oppositely arranged; the simulation area is arranged close to the first wall body, and the test area is arranged close to the second wall body;

the simulation area comprises a simulator, a guide rail device and a simulation platform built below the guide rail device, and the simulator is arranged on the guide rail device; the test area is provided with an object stage, and the object stage is used for loading the phased array radar; the interference area is provided with an interference source which is arranged corresponding to the phased array radar;

the central control system comprises a central control computer, and the central control computer is in control connection with the guide rail device; the central control computer is connected with the interference source in a control way; the central control computer is connected with the object stage.

The application provides a phased array radar test system, through the darkroom design, avoid the ultrasonic wave to form echo interference, set up the interference source in the test field, test phased array radar's interference killing feature, send the ultrasonic wave in the simulator and carry out phased array radar's test. And (4) setting parameters such as the output ultrasonic frequency, the movement speed and the like of the test area and the interference area through a central control computer. Simple operation, convenient use and no environmental limitation. The application provides a phased array radar test system, its darkroom indicates wall body, wall crown and floor etc. that have the function of inhaling the ripples, and this application further separates the darkroom for test area, analog region and locates the interference area between test area and the analog region, is equipped with the wall between interference area and test area. The testing area and the simulation area need to be separated by a proper distance to meet the conduction requirement of ultrasonic waves, so that the testing area and the simulation area are arranged close to a wall body, the space can be saved, the building construction cost is reduced, and the like.

The test system that this application provided pulls balanced mechanism through power unit, and power unit and balanced mechanism slide on guide rail and driven guide rail respectively, and the distance between guide rail and the driven guide rail remains unanimous throughout, and the nearest continuous section length between guide rail and the driven guide rail is equal promptly. And the power mechanism and the balance mechanism are respectively assembled on the guide rail and the driven guide rail, and the power mechanism provides or generates power. The test system which separates the power mechanism from the balance mechanism and cooperates uniformly has the following advantages: firstly, the vibration generated by the power mechanism is separated through the separating force mechanism and the balancing mechanism, and the balancing mechanism is not directly influenced, so that the vibrating probability of the power mechanism is greatly reduced, or the power mechanism can not be vibrated; secondly, the emitted signals have good directivity no matter the simulator arranged on the bearing table is in a moving or static state; when the power mechanism and the balance mechanism are separated, the separated power mechanism, the balance mechanism and the double-guide-rail structure are combined, and the directivity problem of the simulator is fundamentally solved structurally through the position relationship of the power mechanism, the balance mechanism and the double-guide-rail structure; thirdly, the power mechanism and the balance mechanism slide on the guide rail and the driven guide rail continuously and reciprocally, and vibration is easy to occur when the power mechanism and the balance mechanism turn back. This application is through separation balance mechanism and power unit, makes balance mechanism follow nature ground, sustainability, balanced firm following nature synchronous slip for the balancing equipment of delivery is not taking place the vibration.

Furthermore, the guide rail and the driven guide rail are in the shape of arcs which are offset and have the same arc centers, and the shortest connecting line distances between the guide rail and the driven guide rail are equal; the guide rail comprises a guide rail main body, the guide rail main body comprises an outer side wall far away from the arc center, and sawteeth are arranged on the outer side wall; the power mechanism comprises a driving shaft, a driving gear is arranged on the driving shaft corresponding to the sawteeth, and the driving gear is meshed with the sawteeth.

The application provides a guide rail device, guide rail and driven guide rail are the arc center the same, and two sections guide rails that correspond on the physical position, and the phased array radar that is surveyed is located the arc center position. When power unit and balance mechanism slide on the guide rail, keep the distance to the centre of a circle unanimous all the time to through fixed connection balance mechanism and power unit, make the relative position of the two fixed, the arc center of these two sections circular arcs at two places is the same, and the extension line of the two line segments passes through the arc center, thereby the directive property is excellent, can guarantee that the signal that the simulator sent is towards phased array radar all the time. The shortest connecting line distance between the guide rail and the driven rail is equal in the guide rail device provided by the application. The gear mechanism with the driving teeth meshed with the saw teeth realizes traction, the traction accuracy is high, and the speed control can be guaranteed.

The application provides a guide rail device mainly used carries on of simulator in the phased array radar internal field test, and when the simulator displacement was to arbitrary position, the distance of being surveyed the phased array radar did not change, therefore need place the arc center of power unit's circular arc in with being surveyed the phased array radar for in the test procedure, the distance of simulator and phased array radar is unanimous all the time, makes the expression of the parameter that records more comprehensive.

The application provides a guide rail device, guide rail compare in driven rail apart from the arc center farther, guide rail locates the driven rail outside promptly, power unit pulls balance mechanism, starts power by the outside and pulls, and the effect is better entad, and is difficult for producing power unit and balance mechanism stroke asynchronous phenomenon, can not produce the skew phenomenon of arc center yet.

The guide rail main part that this application mentioned can integrated into one piece with the lateral wall, also can the components of a whole that can function independently design. When the guide rail main part and the outer side wall are designed in a split mode, the position of the guide rail main part and the outer side wall can be adjusted, so that the equipment is in the best operation state, the saw tooth part can be replaced, the reliability of the application during operation is guaranteed, and meanwhile the guide rail main part and the outer side wall have the beneficial effects of reducing the replacement cost, reducing the operation difficulty and the like.

Further, the reciprocating motion mentioned in the application refers to a cyclic motion process formed by the power mechanism dragging the balance mechanism to slide to a predetermined position in one direction and then moving in the opposite direction. The bearing platform arranged above the balance mechanism is provided with a simulator, and under the condition that the bearing platform is not in any steering fit, the power mechanism and the balance mechanism need to always point to the direction of the phased array radar so as to realize scanning identification of the change relation and the relative relation under the single or multiple fixed and/or moving states, and discrimination and identification of interference and the like. When the power mechanism is used for traction, the generated traction vibration and the like are consumed on one side of the guide rail, the power received by the balance mechanism is traction force, and the stability of the bearing platform arranged above the balance mechanism is further ensured.

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

The clamping groove is clamped with the fixing plate and then fixed through the connecting structure, the fixing plate is used for parallel conduction of force, the parallel conduction performance of the force is high, the radian formed between the guide rail and the driven rail is guided, and the performance of the consistency of displacement and displacement angle is realized through the fixing plate arranged on the power mechanism and the balance mechanism, so that the directivity of the power mechanism and the balance mechanism is ensured; in any displacement process, the extension line of the connecting line of the power mechanism and the balance mechanism always points to the direction of the arc center, so that the direction of a signal sent by the simulator is always opposite to the direction of the arc center. The angle consistency is that the straight line where the connecting line of the power mechanism and the arc center passes through the balance mechanism, the straight line where the connecting line of the balance mechanism and the arc center directly passes through the power mechanism, and during displacement, although the sliding distances of the balance mechanism and the connecting line of the arc center on the guide rail are different, the angle difference of the balance mechanism and the arc center is consistent due to the restriction of the fixing plate, the consistency is higher, and the test effect is better.

Furthermore, the power mechanism also comprises a crank arm wire guide groove and a wire guide protection arm; the lead protection arm comprises a protection plate arranged on the periphery of the driving gear; the driving motor is arranged on the driving motor position and is provided with a through hole for the driving shaft to pass through and then be connected 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;

the end of the wire guard arm provided with the guard plate is connected with the fixed plate, the guard plate is arranged on the periphery of the driving gear, and the other end of the wire guard arm is connected with the wire groove of the crank arm.

The guard plate arranged on the periphery of the driving gear isolates a wire circuit and the like so as to prevent the wire circuit from being rolled by the driving gear to cause damage and hidden danger; the problem of scattered lines is solved by arranging the crank arm wire groove and the wire protecting arm, the lines are easily tangled in the displacement process, and the smooth test is prevented from being influenced by the lines.

The balance mechanism comprises a balance frame and a roller group; the roller group comprises roller units which are respectively connected with the balancing frame, each roller unit comprises an auxiliary wheel and a driven wheel, and each driven wheel comprises a roller shaft and a sliding bearing; the driven rail includes a driven sidewall; the driven side wall includes a top surface. The auxiliary wheel plays a role in supporting and maintaining the sliding bearing when necessary,

the application provides the gimbal cladding that is the G style of calligraphy can not drop on being the driven rail of T style of calligraphy, further ensures balance mechanism's directive property and stability, follows the driven sidewall and slides from the driving wheel, makes follow driving wheel and power unit formation relative stress, offsets the transverse vibration that makes the mechanism overall stability not vibrate at the in-process that slides.

One end of the roller shaft is connected with the balance frame, and the other end of the roller shaft is connected with the sliding bearing.

The connection is realized through the roller shaft, the balance degree is ensured, the vibration is avoided, and when the vibration is met, the vibration is reduced to the minimum.

The sliding bearing is in compression joint with the driven side wall, and the auxiliary wheel is in compression joint with the sliding bearing and separated from the driven side wall. When the driven wheel and the auxiliary wheel pass through the moving process and the driven wheel is subjected to unbalanced force, the auxiliary wheel provides auxiliary force for maintaining the current state; in the case of daily slippage, no rotation is required.

The sliding bearing moves on the driven side wall and moves on the side wall, and the sliding stability is guaranteed.

And one balancing mechanism at least comprises two roller groups, and the at least two roller groups are respectively arranged at two sides of the driven guide rail. One roller group at least comprises two roller units, and two adjacent roller units are arranged in a mirror image mode.

The utility model provides a guide rail device through design in groups, realizes the equilibrium in strength and the weight, sets up the roller train in pairs or sets up multiunit gyro wheel list for the clearance of the horizontal hunting of balance mechanism is restricted by the maximize, and when receiving the power of left right direction, can produce and slide, makes the removal of equipment more steady, and the strength is more balanced. And simultaneously to the adjustment and guidance of the overall direction of the balancing mechanism.

The balance mechanism further comprises a plurality of balance blocks, the balance blocks are fixed on the balance frame optionally, each balance block comprises a contact surface, the balance blocks are arranged on two sides of the driven guide rail respectively, and the contact surfaces are connected with the surfaces of the side surfaces.

Through setting up the balancing piece for the balance mechanism obtains the second and avoids the swing guarantee when producing the swing, ensures that the data of test is more accurate.

The balance mechanism comprises a plurality of balance rollers, the balance rollers are arranged between the balance frame and the driven guide rail, the balance rollers are located above the driven guide rail, and the straight line direction where the balance rollers are located is tangent to the arc of the driven guide rail at the position of the balance rollers.

This application realizes the support that upwards slides at the level through balanced gyro wheel for balanced the sliding is realized at the in-process that slides to the balance mechanism is whole, and can further make the equilibrium degree of sliding obtain the guarantee, and the ascending supporting of vertical side makes the in-process that slides, and is steady not have the vibration.

Further, the driven guide rail comprises a guide rail base; the guide rail main body is provided with a mounting groove for mounting a guide rail; the installation position is arranged corresponding to the sawtooth guide rail;

the guide rail is fixed in the mounting groove; the saw teeth are arranged on the mounting positions; the driven guide rail is including locating guide rail base top, the anticreep board that extends to guide rail base both sides, the anticreep board is fixed in guide rail base top.

The main power generation mechanism is arranged in a separated mode, so that the power generation mechanism is convenient to produce, assemble, maintain and replace vulnerable parts.

The application provides a guide rail device is through setting up the double guide rail structure of guide rail and driven guide rail side by side, and the stationary performance of reinforcing equipment at the in-process that slides guarantees the high quality of any signal of simulator for test effect obtains the optimization. The two respectively undertake different operation functions, a power mechanism is arranged on the guide rail to provide power, a balance mechanism is arranged on the driven guide rail to additionally install a bearing platform, and the bearing platform is a main structure used for being connected with the simulator; the power mechanism and the balance mechanism are fixed together and are respectively arranged on the two parallel guide rails to form a stable carrying platform, and the power mechanism and the balance mechanism are separated, so that the stability of the platform is guaranteed. The power mechanism pulls the balance mechanism to slide on the guide rail and the driven guide rail respectively, so that the vibration phenomenon is avoided, and the signal quality of the simulator is guaranteed. The distances of the connecting lines from the guide rail to the driven rail are uniform at different positions, and the distances of the connecting lines between the two closest points are equal. The power mechanism and the balance mechanism are respectively erected on the guide rail and the driven guide rail, when the force mechanism is used for traction, generated traction vibration is consumed on one side of the driving guide rail, so that the balance mechanism can be used for guaranteeing balance by limiting vibration of the roller set and the balance block on one side, and the stability of the bearing platform arranged above the balance mechanism is guaranteed.

The guide rail device is including a plurality of, all is equipped with the lift post on the plummer on the arbitrary guide rail device and takes the board to the arc center direction extension from the lift post, take wherein one end and lift post fixed connection other end and simulator fixed connection of board, it is a plurality of the distance of simulator to the arc center is roughly equal.

This application is through setting up multiunit guide rail, carries out the test of many relative slips or fixed position.

This application is through setting up multiunit guide rail, carries out the test of multi-target relative slip or fixed position.

The test area comprises a carrying mechanism, and the carrying mechanism comprises a horizontal adjusting mechanism capable of sliding in a first dimension along the direction of a second wall body and a front-back adjusting mechanism capable of sliding in a second dimension along the direction vertical to the second wall body; the object stage is arranged on the front-back adjusting mechanism and is rotatably connected with the front-back adjusting mechanism; the phased array radar is vertically arranged in front of the objective table and fixed with the objective table;

a mechanical arm is arranged corresponding to the objective table;

the partition height is higher than the loading mechanism and lower than the test bench.

The test guide rail enables the position of the objective table to be transversely movable, the arc center position is adjustable, and the precision of test data is further guaranteed. The partition surface is provided with a wave absorbing structure to avoid echo formation.

The phased array radar replacing structure is characterized in that a third wall body is arranged between the first wall body and the second wall body, an access window is arranged on the first wall body, a replacing window for replacing a phased array radar is arranged on the second wall body, and a door is arranged on the third wall body.

This application is through design access panel and replacement window, when conveniently carrying out indoor overhaul and test, also provides convenience for changing phased array radar.

A phased array radar assembling and disassembling mechanism is arranged outside the darkroom, so that the problem of manual replacement of the phased array radar is solved, and damage during assembling is avoided.

In summary, the phased array radar test system provided by the application is not limited by factors such as environment, loading, unloading and replacing operations of the phased array radar are carried out by controlling the robot in the test area through the central control computer, and the objective table supplies power and signal connection for the phased array radar and exchanges data with the central control computer; and after acquiring the loaded phased array radar signals, the central control computer sends test instructions to the simulation area and the interference area for testing. The application provides a near field test system of phased array radar, degree of automation is high, and efficiency of software testing is high, has important meaning.

The application also discloses a method for testing the phased array radar based on the phased array radar testing system, which realizes comprehensive near field tests such as single simulation, multi-simulation and interference test of the airborne phased array radar, and the testing method is realized as follows:

the test method comprises one or more than one of a single test method, a multi-test method, an interference test method or an equivalent omnidirectional power EIRP test method in any combination;

the single test method comprises the following test steps:

fixing the radar to be tested on the objective table through the test fixture, electrifying the radar to be tested and working in a normal working mode,

the rotation of the objective table is controlled by the central control computer, the direction and the angle of the radar to be measured are changed,

the radar simulator is started through the central control computer, different speed, distance, angle and RCS information are set,

the speed, distance, angle and RCS information received by the radar are read by the central control computer,

recording the maximum/minimum/intermediate value detection distance, the maximum speed/minimum speed/intermediate speed, the positive detection angle/zero angle/negative detection angle and RCS information of the angle position obtained by the test radar;

wherein the multi-target test comprises distance resolution, velocity resolution and angle resolution tests,

fixing the radar to be tested on the objective table through the test fixture, electrifying the radar to be tested and working in a normal working mode,

the distance resolution test comprises the following steps:

the simulator I and the simulator II are arranged through the central control computer, so that the simulator I and the simulator II have the same initial position D1, angle and RCS compared with the radar,

the first simulator is fixed and the distance between the first simulator and the second simulator is kept to be changed step by step when the position D1 is unchanged,

when the distance precision of the first simulator and the second simulator of the radar to be detected can be met, recording the distance D2 at the moment to obtain the actual minimum distance resolution of | D1-D2|,

repeating the distance resolution testing step, testing N groups of data, and calculating the average value of the resolution of the N groups of data to obtain the radar distance resolution;

the speed resolution test comprises the following steps:

the simulator I and the simulator II are arranged through the central control computer, so that compared with the radar, the simulator I and the simulator II have the same initial position D1, RCS and initial speed V1,

the speed V1 of the first simulator is kept unchanged, the speed of the second simulator is changed, when the radar can distinguish the distance, the angle and the speed between the first simulator and the second simulator, the speed of the second simulator is recorded as V2, the speed resolution is | V1-V2|,

repeating the speed resolution testing step, testing N groups of data, and calculating the average value of the resolution of the N groups of data to obtain the radar speed resolution;

the angle resolution test comprises the following steps:

the first simulator and the second simulator are arranged through the central control computer, so that the first simulator and the second simulator have the same initial positions D1, RCS and angle position phi 1 compared with the radar space,

fixing the angle phi 1 of the first simulator, changing the angle of the second simulator,

when the radar can distinguish the distance between the first simulator and the second simulator from RCS, the angle phi 2 of the second simulator is recorded, the angle resolution is phi 2-phi 1,

repeating the angle resolution testing step, testing N groups of data, and calculating the average value of the resolution of the N groups of data to obtain the radar angle resolution;

the measured distance resolution, radar speed resolution and radar angle resolution are multi-target test values of the measured radar;

the interference test comprises the following steps:

fixing the radar to be tested on the tested object rotary table through the testing tool fixture, electrifying the radar to be tested and working in a normal working mode,

the initial position, the speed and the RCS value of the simulator are set through a central control computer,

starting an interference source through a central control computer, and setting the amplitude of an interference signal emitted by the interference source to be lower than the radar index by 20 dB;

increasing the amplitude of the interference signal in a stepping mode at intervals not less than a specific time interval until the performance of the radar to be tested deviates or preset data is reached, and recording test data;

the equivalent omnidirectional power EIRP test comprises the following steps:

fixing the radar to be tested on the tested object rotary table through the testing tool fixture, electrifying the radar to be tested and working in a normal working mode,

the frequency spectrograph or the power meter is started through the central control computer,

the radar to be measured is rotated along the horizontal direction by the objective table, the output power of each angle in the horizontal direction is recorded,

the radar to be detected is rotated in the pitching direction through the objective table, the output power of each angle in the pitching direction is recorded,

and obtaining the peak values of the horizontal direction and the pitching direction through a central control computer to obtain the equivalent omnidirectional power EIRP of the radar.

The method for testing the phased array radar based on the phased array radar testing system is provided by the application, the guide rail device is good in balance degree and high in displacement precision, the simulator is adjusted to the position as far as possible to be consistent with the linear distance of the radar through the fixing plate on the guide rail device, the precision is higher when near field testing is conducted, testing subjects include but are not limited to single simulation, multiple simulation, interference testing and other comprehensive near field testing, the problems that the phased array radar testing subjects are multiple, the task amount is large and the like can be fundamentally solved, and the method has important significance.

Drawings

FIG. 1 is a schematic plan view of functional areas and mechanisms in the functional areas in a darkroom;

FIG. 2 is a schematic view of the wall layout of the disassembled part of the darkroom;

FIG. 3 is a schematic perspective view of FIG. 1;

FIG. 4 is a schematic view of a partially exploded configuration of the track arrangement;

FIG. 5 is an enlarged partial view of portion A of FIG. 4;

FIG. 6 is a schematic view of the structure of the rail apparatus;

FIG. 7 is an enlarged view of part B of FIG. 6;

FIG. 8 is an enlarged partial view of portion C of FIG. 6;

FIG. 9 is an enlarged partial view of portion D of FIG. 6;

fig. 10 is a schematic view of the structure of the loading mechanism.

Description of reference numerals:

100. a simulation area; 110. a guide rail; 111. a guide rail main body; 112. an outer sidewall; 113. saw teeth; 114. mounting grooves; 120. a power mechanism; 121. a drive motor; 122. a guard plate; 123. a wire guard arm; 124. a drive shaft; 125. a drive gear; 126. a crank arm wire guide groove; 130. a driven guide rail; 131. a guide rail base; 132. an anti-falling plate; 140. a balancing mechanism; 141. a balancing stand; 1411. a bearing table; 1412. a clamping groove; 142. balancing the roller; 143. a roller set; 1431. a roller unit; 14311. a driven wheel; 143111, roller axle; 143112, a sliding bearing; 1432. An auxiliary wheel; 144. a counterbalance; 150. a fixing plate; 200. an interference area; 210. an interference source; 300. a test zone; 310. a carrying mechanism; 311. a horizontal adjustment mechanism; 312. a front-rear adjusting mechanism; 313. an object stage; 314. a phased array radar; 500. separating; 600. steel frame rollers; 700. a steel framework; 800. a dark room.

Detailed Description

The present application is described in further detail below with reference to figures 1-10.

As shown in fig. 1, fig. 2 and fig. 3, in the phased array radar 314 testing system provided by the present application, a partition 500 is disposed in a darkroom 800, one side of the partition 500 is provided with a simulation region 100 and an interference region 200, and the other side is provided with a phased array radar 314 testing region 300, the darkroom 800 includes a first wall (not labeled) and a second wall (not labeled) which are disposed 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 simulator (not shown), a rail device (not shown), and a simulation table (not shown) built below the rail device, the simulator being disposed on the rail device; the test area 300 is provided with an object stage 313, and the object stage 313 is used for loading the phased array radar 314; the interference area 200 is provided with an interference source 210; the central control system comprises a central control computer (not marked), and the central control computer is in control connection with the guide rail device; the central control computer is connected with the interference source 210 in a control way; the central control computer is electrically connected with the object stage 313. Wherein, the wall body, the ground and the roof of the darkroom 800 are respectively provided with wave-absorbing materials.

As shown in fig. 4 and 5, the test system includes a guide rail device (not shown) equipped with a guide rail 110 and a driven rail 130 arranged side by side; the power mechanism 120 is arranged on the guide rail 110, the balance mechanism 140 is arranged on the driven rail 130, the bearing table 1411 is arranged above the balance mechanism 140, a simulator can be loaded on the bearing table 1411, the power mechanism 120 and the balance mechanism 140 arranged on the two rails form a circuit with the two rails, and the balance mechanism 140 is loaded on a rail device (not shown). The double-guide-rail structure of the guide rail 110 and the driven rail 130 which are parallel enhances the stability of the device in the sliding process, and ensures that signals sent by any position of the simulator in the moving process can be ensured. The power mechanism 120 pulls the balance mechanism 140 to slide on the guide rail 110 and the driven rail 130, and the power mechanism 120 is separated from the balance mechanism 140, so as to solve the problem of vibration generated by the driving motor 121 during operation, and not to affect the balance mechanism 140, so as to ensure stable balance of the bearing table 1411 without vibration. The guide rail device (not shown) is used as the high balance stability of the carrying platform, and the balance mechanism 140 and the power mechanism 120 are further respectively assembled on the two guide rails, so that the balance stability of the device is improved.

As shown in fig. 5 and 6, the guide rail 110 and the driven rail 130 may be a linear type, an arc type, and a circular type, and a combination of one or more of the above configurations. When the guide rail device is linear, the angle can be adjusted through the bearing table 1411; 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 purpose of the above design is to make the simulator send a signal to the phased array radar 314, and the sent signal is always directed to the phased array radar 314.

As shown in fig. 4 and 7, the guide rail 110 and the driven rail 130 of the present invention are arcs having the same arc center and being offset, and the distances between the opposite positions are the same, and since the two are fixedly connected to form a stress matching with each other, the extension line of the connection line between the power mechanism 120 and the balance mechanism 140 always passes through the arc center, and thus the radius difference between the guide rail 110 and the driven rail 130 is equal.

As shown in fig. 4 and 5, the guide rail 110 includes a guide rail body 111, the guide rail body 111 includes an outer sidewall 112 away from the arc center, and the outer sidewall 112 is provided with a sawtooth 113; the power mechanism 120 includes a driving shaft 124, and a driving gear 125 is provided on the driving shaft 124 corresponding to the saw teeth 113, and the driving gear 125 is engaged with the saw teeth 113. This application needs guarantee device including the originated arbitrary one-step operation that stops the inherent steady vibration-free, therefore has selected the gear structure, avoids starting or the slip position phenomenon takes place on the way of the operation, and the guarantee real-time data is accurate. However, the achievement of traction by a non-meshing configuration, such as by a smooth roller surface, pneumatically or hydraulically driven counterbalance mechanism 140, should also be considered essential to the present application.

As shown in fig. 5 and 9, the balance mechanism 140 of the present application is provided with a locking 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, the other end is provided with a driving motor position (not labeled), and the driving motor 121 is fixed on the driving motor position (not labeled). It is contemplated that the driving motor 121 may be disposed on the left and right sides of the fixing plate 150, and also disposed outside or below the end portions of the fixing plate 150. The driving motor 121 is disposed at one end of the fixing plate 150, a through hole for the rotation shaft of the driving motor 121 to pass through is formed in the fixing plate 150, and the driving motor 121 is located above the fixing plate 150 and fixed to the fixing plate 150.

As shown in fig. 5 and 9, the driving motor 121 is preferably engaged with the saw teeth 113 at a lower portion thereof through the driving gear 125 and is preferably connected to the balancing mechanism 140 at an upper portion thereof through the fixing plate 150.

As shown in fig. 5, the power mechanism 120 provided by the present application further includes a crank wire guiding groove 126 and a wire guiding arm 123; the wire guard arm 123 includes a guard plate 122 disposed around the drive gear 125; the driving motor (not labeled) is provided with a through hole for the driving shaft 124 to pass through and then to be connected with the driving gear 125, and the driving gear 125 is arranged below the fixing plate 150; one end of the wire guard arm 123 provided with the guard plate 122 is connected with the fixing plate 150, the guard plate 122 is arranged on the periphery of the driving gear 125, and the other end is connected with the crank arm wire groove 126. Power lines and other signal lines are installed in the crank arm wire groove 126, and the crank arm wire groove 126 moves along with the movement of the guide rail device in the transverse direction, so that the lines are not scattered; further, the power mechanism 120 and the balancing mechanism 140 are guided in the longitudinal direction by the wire guard 123 and prevented from being engaged.

As shown in fig. 5, 6 and 9, the balancing mechanism 140 provided by the present application is provided with a balancing stand 141 and a roller set 143; the roller group 143 includes a roller unit 1431 provided corresponding to the balance 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 slip bearing 143112; the driven rail 130 includes a driven sidewall (not labeled); the driven side wall comprises a top surface (not labeled) and a side surface (not labeled); one end of the roller shaft 143111 is connected with the balance frame 141, and the other end is connected with the sliding bearing 143112; the slide bearing 143112 is connected to the driven side wall and the auxiliary wheel 1432 is connected to the slide bearing 143112 and separated from the driven side wall.

As shown in fig. 5, one balancing mechanism 140 includes at least two roller groups 143, and at least two roller groups 143 are respectively disposed at both sides of the driven rail 130. One roller group 143 includes at least two roller units 1431, and adjacent two roller units 1431 are arranged in a mirror image.

As shown in fig. 5 and 9, the roller unit 1431 preferably includes four, and any two roller sets 143 are arranged in a mirror image manner. Preferably, the roller unit 1431 is located at the same side or different side of the driven rail 130 to ensure smooth balance.

As shown in fig. 5, as a preferable scheme, the number of the roller units 1431 is six, three roller units 1431 are respectively arranged on two sides of the driven guide rail 130, and the three roller units 1431 on the same side form an arc-shaped surface arrangement connected with the arc-shaped surface of the driven guide rail 130.

As shown in fig. 5, the roller units 1431 may be preferably three, one on one side of the driven rail 130 and two on the other side.

As shown in fig. 5 and 9, the roller unit 1431 may be arranged in other forms, which are not described herein.

As shown in fig. 5, it can be understood that the rollers at one side of the driven rail 130 can be combined into the roller group 143.

As shown in fig. 5, any balance weight 144 is fixed on the balance frame 141, the balance weight 144 includes a contact surface, the balance weights 144 are respectively disposed on two sides of the driven guide rail 130, and the contact surface is connected to the surface of the side wall; preferably, the contact surface is adjacent to the sidewall surface with no or negligible friction. The balance weight 144 is provided to further ensure smooth operation of the balance mechanism 140, which can prevent foreign objects from being caught, and at least one of the four ends of the balance weight is provided.

As shown in fig. 4 and 5, the balance mechanism 140 includes a plurality of balance rollers 142, the balance rollers 142 are disposed between the balance frame 141 and the driven rail 130, the balance rollers 142 are located above the driven rail 130, the balance rollers 142 are located in a tangential direction of the driven rail 130, and movement of the balance rollers 142 is guided by other portions of the balance mechanism 140 to perform angle self-adjustment.

As shown in fig. 4 and 5, the balance roller 142 may be preferably provided as a flat bearing (not shown), and the flat bearing (not shown) is disposed between the balance frame 141 and the driven rail 130 and above the driven rail 130. Wherein a flat bearing (not labeled) separates a plurality of balls, each ball having a top portion connected to the balance frame 141 and a bottom portion pressed against the top surface of the driven rail 130. The mentioned structure for separating the balls is a ball separating plate, which is connected with the balance frame 141.

As shown in fig. 5, 6 and 9, it is preferable that a plurality of rollers, which are three, four, five or more, preferably four, are provided between the driven rail 130 and the balance frame 141 in the vertical direction along the body cutting direction of the driven rail 130.

As shown in fig. 7, the guide rail body 111 is provided with an installation groove 114 for installing the guide rail 110, and the guide rail 110 is fixed in the installation groove 114; the guide rail 110 is provided with mounting positions (not labeled) corresponding to the saw teeth 113, and the saw teeth 113 are arranged on the mounting positions; the driven rail 130 includes a rail base 131 and anti-falling plates 132 disposed above the rail base 131 and extending to both sides of the rail base 131, and the anti-falling plates 132 are fixed to the top of the rail base 131.

As shown in fig. 7 and 8, the guide rail body 111 may be connected to the mounting groove 114 by a connection method such as clamping and/or screws; similarly, the saw teeth 113 and the guide rail 110 can be fixed by clamping and/or screwing. In the traction process, the guide rail 110 and the saw teeth 113 can be worn, and the split type design is convenient to replace and maintain. The anti-falling plate 132 and the rail base 131 form a T-shaped structure, wherein the anti-falling plate 132 is detachably assembled with the rail base 131.

As shown in fig. 7 and 8, in the guide rail device according to the present invention, the distance between the guide rail 110 and the driven rail 130 is always constant, that is, the closest connecting line distance between the guide rail 110 and the driven rail 130 is equal. The power mechanism 120 and the balance mechanism 140 are respectively assembled on the guide rail 110 and the driven rail 130, the power mechanism 120 provides or generates power, and the balance mechanism 140 plays a role of continuously balancing and stably sliding, so that the balance equipment carried thereon is designed to separate power traction from carrying and balance without vibration, and has the following advantages: firstly, the guide rail device needs to ensure the directivity during the operation, and the directivity problem is fundamentally solved in structure by separating the power mechanism 120 and the balance mechanism 140 and adjusting the position relationship of the power mechanism and the balance mechanism; secondly, the power mechanism 120 and the balance mechanism 140 continuously and reciprocally slide on the guide rail 110 and the driven rail 130, and are easy to vibrate when folded back, so that the technical problem is solved by the above-mentioned separation design; thirdly, through the separating force mechanism and the balancing mechanism 140, the vibration of the power mechanism 120 itself is separated, so that the stability of the balancing mechanism 140 is improved, and the problem of vibration on one side of the power mechanism 120 is solved more simply and easily.

As shown in fig. 5 and 9, the reciprocating motion refers to a 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 platform 1411 above the balancing mechanism 140, and the power mechanism 120 and the balancing mechanism 140 need to be always directed to the phased array radar 314 to scan and identify the change relationship and the relative relationship in a single or multiple fixed and/or moving states, and to distinguish and identify interference, etc. when the platform 1411 is not in any steering engagement. When the power mechanism 120 performs traction, traction vibration and the like generated are consumed on the guide rail 110 side, and the power received by the balance mechanism 140 is traction force, so that the stability of the plummer 1411 provided above the balance mechanism 140 is ensured.

As shown in fig. 1 and 10, the test area 300 includes a loading mechanism 310, where the loading mechanism 310 includes a horizontal adjustment mechanism 311 capable of sliding along a second wall in a first dimension, and a front-back adjustment mechanism 312 capable of sliding along a second dimension perpendicular to the second wall in a second dimension; the object stage 313 is arranged above the object mechanism 310 and is rotatably connected with the object mechanism 310; the phased array radar 314 is vertically arranged in front of the objective table 313; a mechanical arm is arranged corresponding to the object stage 313, and particularly the mechanical arm is arranged outside the dark room corresponding to the object stage; the partition 500 is higher than the loading mechanism 310 and lower than the test stand. Further, the wiring that realizes the configuration of the first-dimension slippage and the configuration of the second-dimension slippage may also be arranged through the crank wire groove 126 and the wire guard arm 123.

As shown in fig. 2, a third wall is disposed between the first wall and the second wall, the first wall is provided with an access window, the second wall is provided with a replacement window for replacing the phased array radar 314, and the third wall is provided with a door.

As shown in fig. 2 and 3, it is preferable to provide a phased array radar 314 attachment/detachment mechanism outside the darkroom 800, to solve the problem of manual replacement of the phased array radar 314, and to avoid damage during manual attachment.

As shown in fig. 3, the darkroom 800 preferably includes a steel frame 700, and a steel frame roller 600 is disposed at a lower portion of the steel frame 700.

The implementation principle of the embodiment is as follows: the position relation between an arc section and an arc center is formed by combining the guide rail of the arc and the movable object stage 313, so that the positions of the phased array radar 314 and the simulator are kept consistent in the test process, the robot in the test area 300 is controlled by the central control computer to carry out loading, placing and replacing work on the phased array radar 314 under the condition of not being limited by factors such as environment and the like, and the object stage 313 supplies power and is in signal connection with the phased array radar 314 and exchanges data with the central control computer; after acquiring the signals of the loaded phased array radar 314, the central control computer sends test instructions to the simulation area 100 and the interference area 200 for testing.

The application also discloses a method for testing the phased array radar 314 based on the phased array radar 314 test system, so that comprehensive near field tests such as single simulation, multi-simulation and interference test of the airborne phased array radar 314 are realized, and the test method is realized as follows:

the single test method comprises the following test steps:

fixing the radar to be tested on the objective table 313 through the test fixture, electrifying the radar to be tested and working in a normal working mode,

the rotation of the objective table 313 is controlled by the central control computer, the direction and the angle of the radar to be measured are changed,

the radar simulator is started through the central control computer, different speed, distance, angle and RCS information are set,

the speed, distance, angle and RCS information received by the radar are read by the central control computer,

and recording the maximum/minimum/intermediate value detection distance, the maximum speed/minimum speed/intermediate speed, the positive detection angle/zero angle/negative detection angle and RCS information of the angular position acquired by the test radar. The basic performance of the phased array radar 314 is tested by target detection.

Wherein the multi-target test comprises distance resolution, velocity resolution and angle resolution tests,

fixing the radar to be tested on the objective table 313 through the test fixture, electrifying the radar to be tested and working in a normal working mode,

the distance resolution test comprises the following steps:

the simulator I and the simulator II are arranged through the central control computer, so that the simulator I and the simulator II have the same initial position D1, angle and RCS compared with the radar,

the first simulator is fixed and the distance between the first simulator and the second simulator is kept to be changed step by step when the position D1 is unchanged,

when the distance precision of the first simulator and the second simulator of the radar to be detected can be met, recording the distance D2 at the moment to obtain the actual minimum distance resolution of | D1-D2|,

repeating the distance resolution testing step, testing N groups of data, and calculating the average value of the resolution of the N groups of data to obtain the radar distance resolution;

the speed resolution test comprises the following steps:

the simulator I and the simulator II are arranged through the central control computer, so that compared with the radar, the simulator I and the simulator II have the same initial position D1, RCS and initial speed V1,

the speed V1 of the first simulator is kept unchanged, the speed of the second simulator is changed, when the radar can distinguish the distance, the angle and the speed between the first simulator and the second simulator, the speed of the second simulator is recorded as V2, the speed resolution is | V1-V2|,

repeating the speed resolution testing step, testing N groups of data, and calculating the average value of the resolution of the N groups of data to obtain the radar speed resolution;

the angle resolution test comprises the following steps:

the first simulator and the second simulator are arranged through the central control computer, so that the first simulator and the second simulator have the same initial positions D1, RCS and angle position phi 1 compared with the radar space,

fixing the angle phi 1 of the first simulator, changing the angle of the second simulator,

when the radar can distinguish the distance between the first simulator and the second simulator from RCS, the angle phi 2 of the second simulator is recorded, the angle resolution is phi 2-phi 1,

repeating the angle resolution testing step, testing N groups of data, and calculating the average value of the resolution of the N groups of data to obtain the radar angle resolution;

the measured distance resolution, radar speed resolution and radar angle resolution are multi-target test values of the measured radar. And the test of complex technical indexes such as precision, resolution and the like of the phased array radar 314 is completed through multi-target test.

The interference test comprises the following steps:

fixing the radar to be tested on the tested object rotary table through the testing tool fixture, electrifying the radar to be tested and working in a normal working mode,

the initial position, the speed and the RCS value of the simulator are set through a central control computer,

starting the interference source 210 through a central control computer, and setting the amplitude of an interference signal emitted by the interference source 210 to be lower than the radar index by 20 dB;

increasing the amplitude of the interference signal in a stepping mode at intervals not less than a specific time interval until the performance of the radar to be tested deviates or preset data is reached, and recording test data;

preferably, 3dB increase of the amplitude of the interference signal is carried out every time at a time interval of not less than 8 seconds, and the test data are recorded until the performance of the radar to be tested deviates or preset data are reached. Optionally, 5dB increase of the interference signal amplitude is performed at time intervals of not less than 5 seconds, and the test data is recorded until the performance of the radar to be tested deviates or reaches preset data. Optionally, 8dB increase of the interference signal amplitude is performed at time intervals of not less than 3 seconds, and the test data is recorded until the performance of the radar to be tested deviates or reaches preset data. The shorter the adjustment time interval, the higher the sensitivity requirements for the radar. It should be noted that, the time and step-by-step adjustment of the strength of the interference signal described in this embodiment may be set according to the actual requirement of the test.

The equivalent omnidirectional power EIRP test comprises the following steps:

fixing the radar to be tested on the tested object rotary table through the testing tool fixture, electrifying the radar to be tested and working in a normal working mode,

the frequency spectrograph or the power meter is started through the central control computer,

the radar to be tested is rotated along the horizontal direction through the object stage 313, the output power of each angle along the horizontal direction is recorded,

the radar to be tested is rotated in the pitching direction through the objective table 313, the output power of each angle in the pitching direction is recorded,

and obtaining the peak values of the horizontal direction and the pitching direction through a central control computer to obtain the equivalent omnidirectional power EIRP of the radar.

The foregoing are preferred embodiments of the present application and references to the same herein are to be understood as being approximate, analogous, etc.; the scope of protection of the present application is not limited in this way, and therefore: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (10)

1. A phased array radar test system, characterized by: comprises a darkroom (800) and a central control system,

a partition (500) is arranged in the darkroom (800), a simulation area (100) and an interference area (200) are arranged on one side of the partition (500), a test area (300) of the phased array radar (314) is arranged on the other side of the partition, and the darkroom (800) comprises a first wall body and a second wall body which are oppositely arranged; the simulation area (100) is arranged close to a first wall body, and the test area (300) is arranged close to a second wall body;

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 an object stage (313), and the object stage (313) is used for loading a phased array radar (314); the interference area (200) is provided with an interference source (210), and the interference source (210) is arranged corresponding to the phased array radar (314);

the central control system comprises a central control computer, and the central control computer is in control connection with the guide rail device; the central control computer is in control connection with an interference source (210); the central control computer is electrically connected with the object stage (313).

2. The test system of claim 1, wherein:

the guide rail device comprises a guide rail (110) and a driven guide rail (130) which are arranged in parallel, a power mechanism (120) is arranged on the guide rail (110), a balance mechanism (140) is arranged on the driven guide rail (130), a bearing table (1411) and a fixing plate (150) for connecting the balance mechanism (140) and the power mechanism (120) are arranged above the balance mechanism (140); the power mechanism (120) can pull the balance mechanism (140) to be arranged on the guide rail (110), and the balance mechanism (140) can be arranged on the driven rail (130) in a sliding manner;

the guide rail (110) and the driven guide rail (130) are arc-shaped with the same arc center, and the shortest connecting line distance between the guide rail (110) and the driven guide rail (130) is equal; the guide rail (110) comprises a guide rail main body (111), the guide rail main body (111) comprises an outer side wall (112) far away from an arc center, and sawteeth (113) are arranged on the outer side wall (112); the power mechanism (120) comprises a driving shaft (124), a driving gear (125) is arranged on the driving shaft (124) corresponding to the saw teeth (113), and the driving gear (125) is meshed with the saw teeth (113);

the balance 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), the other end of the fixing plate 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 main body (111) is provided with a mounting groove (114) for mounting the guide rail (110); the installation position is arranged corresponding to the saw tooth (113) guide rail (110);

the guide rail (110) is fixed in the mounting groove (114); the saw teeth (113) are arranged on the mounting position; driven guide rail (130) are including locating guide rail base (131) top, to guide rail base (131) both sides extension's anti-falling plate (132), anti-falling plate (132) are fixed in guide rail base (131) top.

3. The test system of claim 2, wherein:

the power mechanism (120) also comprises a crank arm wire guide groove (126) and a wire guide protection arm (123); the lead wire protection arm (123) comprises a protection plate (122) arranged on the periphery of the driving gear (125); the driving motor position comprises a through hole for a driving shaft (124) to penetrate through and then to be connected with a 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);

one end of the wire protecting arm (123) provided with the protecting plate (122) is connected with the fixing plate (150), and the other end of the wire protecting arm is connected with the crank arm wire groove (126).

4. The test system of claim 3, wherein:

the balance mechanism (140) comprises a balance frame (141) and a roller group (143); the balancing mechanism (140) at least comprises two roller groups (143), and the roller groups (143) are respectively arranged at two sides of the driven guide rail (130); the roller group (143) comprises balancing rollers (142) respectively connected with the balancing frame (141), the roller unit (1431) comprises an auxiliary wheel (1432) and a driven wheel (14311), and the driven wheel (14311) comprises a roller shaft (143111) and a sliding bearing (143112); the driven rail (130) comprises a driven sidewall; the driven side wall comprises a top surface and a side surface;

one end of the roller shaft (143111) is connected with the balance frame (141), and the other end of the roller shaft is connected with the sliding bearing (143112);

the sliding bearing (143112) is in press fit with the top surface, the auxiliary wheel (1432) is in press fit with the sliding bearing (143112) and the auxiliary wheel (1432) is separated from the side surface.

5. The test system of claim 4, wherein:

the balance mechanism (140) further comprises a plurality of balance weights (144); any balance block (144) is fixed on the balance frame (141), the balance block (144) comprises a contact surface, the balance blocks (144) are respectively arranged at two sides of the driven guide rail (130), and the contact surface is connected with the surface of the side surface; one roller group (143) at least comprises two roller units (1431), and two adjacent roller units (1431) are arranged in a mirror image mode.

6. The test system of claim 4, wherein:

the balance mechanism (140) comprises a plurality of balance rollers (142), the balance rollers (142) are arranged between the balance frame (141) and the driven guide rail (130), the balance rollers (142) are located above the driven guide rail (130), and the linear direction where any balance roller (142) is located is tangent to the arc of the driven guide rail (130) where the balance roller is located.

7. The test system of claim 2, wherein:

the guide rail device comprises a plurality of guide rail devices, wherein a lifting column and a carrying plate extending from the lifting column to the arc center direction are arranged on a bearing table (1411) on any guide rail device, one end of the carrying plate is fixedly connected with the lifting column, the other end of the carrying plate is fixedly connected with the simulator, and the distance from the simulator to the arc center is approximately equal.

8. The test system of claim 1, wherein:

the test area (300) comprises a carrying mechanism (310), wherein the carrying mechanism (310) comprises a horizontal adjusting mechanism (311) capable of sliding along a second wall body in a first dimension and a front-back adjusting mechanism (312) capable of sliding along a second dimension perpendicular to the second wall body; the object stage (313) is arranged on the front-back adjusting mechanism (312) and is rotatably connected with the front-back adjusting mechanism (312); the phased array radar (314) is vertically arranged in front of the objective table (313) and is fixed with the objective table (313);

a mechanical arm is arranged outside the darkroom corresponding to the object stage (313);

the partition (500) is higher than the loading mechanism (310) and lower than the test bench.

9. The test system of claim 1, wherein:

a third wall body is arranged between the first wall body and the second wall body, an access window is arranged on the first wall body, a replacement window for replacing the phased array radar (314) is arranged on the second wall body, and a door is arranged on the third wall body.

10. A method of testing a phased array radar, comprising:

the test method comprises one or more than one of a single test method, a multi-test method, an interference test method or an equivalent omnidirectional power EIRP test method in any combination;

the single test method comprises the following test steps:

fixing the radar to be tested on an objective table (313) through a test fixture, electrifying the radar to be tested and working in a normal working mode,

the rotation of the objective table (313) is controlled by the central control computer to change the direction and the angle of the radar to be measured,

the radar simulator is started through the central control computer, different speed, distance, angle and RCS information are set,

the speed, distance, angle and RCS information received by the radar are read by the central control computer,

recording the maximum/minimum/intermediate value detection distance, the maximum speed/minimum speed/intermediate speed, the positive detection angle/zero angle/negative detection angle and RCS information of the angle position obtained by the test radar;

wherein the multi-target test comprises distance resolution, velocity resolution and angle resolution tests,

fixing the radar to be tested on an objective table (313) through a test fixture, electrifying the radar to be tested and working in a normal working mode,

the distance resolution test comprises the following steps:

the simulator I and the simulator II are arranged through the central control computer, so that the simulator I and the simulator II have the same initial position D1, angle and RCS compared with the radar,

the first simulator is fixed and the distance between the first simulator and the second simulator is kept to be changed step by step when the position D1 is unchanged,

when the distance precision of the first simulator and the second simulator of the radar to be detected can be met, recording the distance D2 at the moment to obtain the actual minimum distance resolution of | D1-D2|,

repeating the distance resolution testing step, testing N groups of data, and calculating the average value of the resolution of the N groups of data to obtain the radar distance resolution;

the speed resolution test comprises the following steps:

the simulator I and the simulator II are arranged through the central control computer, so that compared with the radar, the simulator I and the simulator II have the same initial position D1, RCS and initial speed V1,

the speed V1 of the first simulator is kept unchanged, the speed of the second simulator is changed, when the radar can distinguish the distance, the angle and the speed between the first simulator and the second simulator, the speed of the second simulator is recorded as V2, the speed resolution is | V1-V2|,

repeating the speed resolution testing step, testing N groups of data, and calculating the average value of the resolution of the N groups of data to obtain the radar speed resolution;

the angle resolution test comprises the following steps:

the first simulator and the second simulator are arranged through the central control computer, so that the first simulator and the second simulator have the same initial positions D1, RCS and angle position phi 1 compared with the radar space,

fixing the angle phi 1 of the first simulator, changing the angle of the second simulator,

when the radar can distinguish the distance between the first simulator and the second simulator from RCS, the angle phi 2 of the second simulator is recorded, the angle resolution is phi 2-phi 1,

repeating the angle resolution testing step, testing N groups of data, and calculating the average value of the resolution of the N groups of data to obtain the radar angle resolution;

the measured distance resolution, radar speed resolution and radar angle resolution are multi-target test values of the measured radar;

the interference test comprises the following steps:

fixing the radar to be tested on the tested object rotary table through the testing tool fixture, electrifying the radar to be tested and working in a normal working mode,

the initial position, the speed and the RCS value of the simulator are set through a central control computer,

starting an interference source (210) through a central control computer, and setting the amplitude of an interference signal emitted by the interference source (210) to be lower than the radar index by 20 dB;

increasing the amplitude of the interference signal in a stepping mode at intervals not less than a specific time interval until the performance of the radar to be tested deviates or preset data is reached, and recording test data;

the equivalent omnidirectional power EIRP test comprises the following steps:

fixing the radar to be tested on the tested object rotary table through the testing tool fixture, electrifying the radar to be tested and working in a normal working mode,

the frequency spectrograph or the power meter is started through the central control computer,

the radar to be measured is rotated along the horizontal direction through the objective table (313), the output power of each angle of the horizontal direction is recorded,

the radar to be tested is rotated in the pitching direction through the objective table (313), the output power of each angle in the pitching direction is recorded,

and obtaining the peak values of the horizontal direction and the pitching direction through a central control computer to obtain the equivalent omnidirectional power EIRP of the radar.

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