Automatic radar boresighting method based on gyroscope

Abstract

The invention relates to an automatic radar boresighting method based on a gyroscope. The method comprises the following steps of obtaining attitude information of the gyroscope, wherein the attitudeinformation of the gyroscope comprises a roll angle, a pitching angle and a course angle of a radar antenna; obtaining attitude information of aircraft inertial navigation, wherein the attitude information of the aircraft inertial navigation comprises a roll angle, a pitching angle and a course angle of an aircraft; comparing difference values of the attitude information of the gyroscope and the attitude information of the aircraft inertial navigation by taking the attitude information of the aircraft inertial navigation as a reference; and calculating boresighting data of a radar according tothe difference values, wherein the boresighting data comprises an azimuth error and a pitching error of the radar. According to the automatic radar boresighting method, the automatic boresighting function of the radar can be achieved, and the boresighting precision is high, so that the measurement precision of the radar is improved.

Description

technical field [0001] The invention belongs to the technical field of radar target calibration, and in particular relates to a gyroscope-based automatic radar target calibration method and system. Background technique [0002] Airborne radar antennas are usually installed on the carrier platform, but due to installation errors, the radar antenna coordinate system and the body coordinate system do not completely coincide. Therefore, it is necessary to measure the installation error between the antenna and the carrier aircraft through radar target calibration. The purpose of radar target calibration is to obtain the relative relationship between the antenna front and the carrier aircraft, so as to compensate the relative installation error between the radar and the carrier aircraft, so as to achieve the purpose of improving the radar measurement accuracy. [0003] Airborne radar target calibration in the prior art usually adopts the following methods: [0004] Step 1: Use a ...

AI Technical Summary

Problems solved by technology

[0010]1) Duplication of work was caused in operation, a lot of manpower and material resources were wasted, and work efficiency was reduced;

[0011]2) Different radar antennas need to customize target boards with different shapes and requirements, and there are many target boards and they are not universal;

[0012]3) The target board is placed far away, occupying the effective space of the factory building;

[0013]4) In manual operation mode, there are certain human errors in manual measurement, and the measurement is not accurate;

[0014]5) When calibrating the target, it is easy to bump the antenna array when it is installed on the antenna array fixture

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