Passive positioning test method based on the same azimuth angle of the interference source of the simulated radar system
A technology of passive positioning and testing methods, which is applied to radio wave measurement systems, instruments, etc., and can solve the problems of high site requirements
Active Publication Date: 2019-11-26
LEIHUA ELECTRONICS TECH RES INST AVIATION IND OF CHINA
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However, both of these methods require large-scale mechanical devices and have high requirements for the site, which is generally impossible to achieve in the laboratory of the field test flight.
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[0032] The present invention will be described in further detail below. The passive positioning test method based on the constant azimuth angle of the interference source of the simulated radar system is characterized in that the steps are as follows:
[0033] 1) Place the signal horn of the simulated interference source in the laboratory at the position where the azimuth angle of the radar system is α, and set α=27.26°;
[0034] 2) Initially set the parameters of the airborne sensors on the avionics simulator, the airborne ground speed Ve = 400 m / s, the inertial height He = 3000 m, and the initial heading angle β of the airborne aircraft 0 =0°, initial longitude Lon of carrier aircraft 0 =110.5°, latitude Lat 0 =18°, aircraft climb angle θ=5.1°, starting distance R of interference source 0 =200000 meters, the velocity of the interference source Vj=0, the height of the interference source Hj=10 meters, the longitude of the interference source is 111.37°, and the latitude is...
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The invention provides a passive positioning test method based on simulation radar system interference source azimuth angle invariability. The passive positioning test method is characterized by including the steps: 1) placing laboratory simulation interference source signal loudspeakers at radar system azimuth angles alpha ranging from +-10 degrees to +-55 degrees; 2) initially setting airborne sensor parameter values on an avionics emulator; 3) starting an aerial carrier course angle beta after radars access passive positioning interference sources. The airborne sensor parameter values include aerial carrier ground speed Ve, inertial altitude He, an aerial carrier datum course angle beta0, aerial carrier initial longitude Lon0, aerial carrier initial latitude Lat0, an aerial carrier climbing angle theta, interference source speed Vj, interference source height Hj, interference source longitude Lonj, interference source latitude Latj and initial GPS (global position system) distance between an aerial carrier and the interference sources. Automatic iteration calculation is achieved according to update period dt of the avionics emulator, the radar system azimuth angles alpha of the interference sources after data update periods keep invariant within given error ranges, and an azimuth angle error delta is as shown in the specification.
Description
technical field [0001] The invention belongs to the field of airborne fire control radar, and relates to the test and verification of the radar passive positioning interference source working mode. Background technique [0002] The purpose of passive positioning is to use the angle measurement data received by the radar and the aircraft navigation data to estimate the motion parameters of the tracked target or interference source, such as position, velocity, and acceleration, through nonlinear filtering. [0003] When the airborne radar uses the function of passively locating the interference source to locate the ground / sea interference source, the azimuth angle of the ground / sea stationary or slow-moving interference source relative to the airborne radar generally changes continuously during the flight of the airborne radar . In the laboratory test environment, the simulation can be realized in two ways: one is to control the movement of the horn antenna that simulates the...
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IPC IPC(8): G01S7/40
CPCG01S7/40
Inventor 莫修辞吴振有方亚军
Owner LEIHUA ELECTRONICS TECH RES INST AVIATION IND OF CHINA