提高雷达测量精度的方位角与原点修正方法

Azimuth and Origin Correction Method for Improving Radar Measurement Accuracy

在雷达测量精度检测中需要将大地坐标转换为雷达坐标以获得目标的真值。首先,介绍了大地坐标系与雷达坐标系的相互转换方法。然后,从大地成果测量误差、雷达参考点选择误差及雷达正北标定误差方面分析了坐标转换误差,并利用某连续波雷达实际测量数据给出了误差仿真结果。最后,提出了提高雷达测量精度的方位角与原点修正方法。将所提方法应用到上述连续波测量雷达中,可使目标真值更为准确,明显减小坐标转换误差对雷达测量精度的影响,进而能更准确地反应雷达测量精度。

It is necessary to convert geodetic coordinates into radar coordinates to obtain the true value of the target in the detection of radar measurement accuracy.First,the conversion method between geodetic coordinate system and radar coordinate system is introduced.Then,the coordinate transformation error is analyzed from the aspects of geodetic result measurement error,radar reference point selection error and radar due north calibration error,and the error simulation results are given by using the actual measurement data of a continuous wave radar.Finally,the azimuth and origin correction method for improving the radar measurement accuracy is proposed.The application of the proposed method to the above continuous wave measurement radar can make the true value of the target more accurate,reduce the influence of coordinate conversion error on radar measurement accuracy obviously,and reflect the radar measurement accuracy more accurately.