Research Article Open Access

Method for Verifying the Rationality of Radar Data Based on Single Optical Theodolite

Abstract

The Pulse radar is one of the pillar equipment for aircraft navigation and control. Due to changes in the target state or environment, radar data may seriously deviate from the true situation of the target. When using radar data for navigation control, rationality check must be carried out to ensure that the radar data is normal. In order to solve the problem that existing algorithms need multiple theodolite data fusion to solve the target position coordinates to check the rationality of radar measurement data, a series of algorithms based on the angle measurement data of a single optical theodolite is proposed to realize the rationality check of pulse radar. The main feature of this paper is to use the two-dimensional data (azimuth angle and pitch angle of target) of theodolite to check the rationality of the three-dimensional data (range, azimuth and pitch angle of target in radar coordinate system) of radar. This method established in this paper effectively breaks through the limitation that it is necessary to use two or more theodolites to calibrate or verify the quality of pulse radar tracking data in the process of carrying out measurement and control tasks in the current engineering field, which is of great engineering value. This method proposed in this paper can be used to identify abnormal data and repair outliers in the navigation and control process of aircraft and moving objects, so as to avoid navigation errors and control deviations caused by abnormal data and outliers. The simulation results show that this method can be used with an accuracy rate of over 95% when the radar ranging data is normal but the quality of the angle measurement data is unknown, or when the radar angle measurement data is normal but the quality of the ranging data is unknown.

Hu Shaolin1*, Xin Yidan2

To read the full article Download Full Article | Visit Full Article