Three-dimensional radar altitude dynamic calibration device and method based on unmanned helicopter with rotor wings

Abstract

The invention belongs to a radar calibration device, and relates to a three-dimensional radar altitude dynamic calibration device and method based on an unmanned helicopter with rotor wings. The radar altitude dynamic calibration device comprises three big dipper receiver terminals, a warship-mounted radar data recording device, a flying control system and a calculating sub-system, wherein the three big dipper receiver terminals include a big dipper receiver I which is installed on a reference point of a wharf and serves as a reference station, a big dipper receiver II which is installed in the center of a warship equivalent position and a big dipper receiver III installed on the unmanned helicopter with the rotor wings. During calibration, the big dipper devices are additionally arranged on the unmanned helicopter with the rotor wings and the warship, changes of physical positions of the unmanned helicopter with the rotor wings and the warship are recorded, meanwhile, data are recorded synchronously through a warship radar, error processing analysis is carried out on truth-value data recorded on the unmanned helicopter with the rotor wings and the recorded data of the warship radar, and ultimately a radar elevation error value is obtained.

Description

technical field [0001] The invention belongs to a radar calibration device, in particular to a three-coordinate radar height dynamic calibration device based on a rotorless unmanned helicopter and a method thereof, which can solve the calibration problem of radar elevation angle accuracy. Background technique [0002] At present, domestic research on shipborne radar calibration is mainly focused on the direction of two-coordinate radar. Zhao Xin et al. proposed to use a zero calibration method based on the combination of differential GPS, CCD, laser theodolite and other technologies. The position accuracy of the calibration system is better than 50cm, and the angle accuracy Better than 0.05mrad; Yao Jingshun et al. proposed to use GPS technology to dynamically calibrate shipborne radar, and the target position accuracy reached 1m; Duan Jingxuan et al. proposed to use GPS RTK technology to dynamically calibrate three-coordinate radar, and the distance calibration error was not...

AI Technical Summary

Problems solved by technology

However, using a balloon as a calibration target requires an air traffic control application. After the balloon is released, it is generally impossible to recover, and there are also potential safety hazards.

The disadvantage of using civil aviation aircraft is that the target is a non-cooperative target, and it is easy to register the wrong number. Due to the uncontrollable route, the amount of data will be very small. to the accuracy requirement

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