多雷达组网系统空间误差分布与配准算法仿真

Space Errors Distribution and Registration Algorithm Simulation of the Multi-Radar Network System

空间配准是多目标跟踪系统中的关键环节.本文针对实际的多雷达组网系统,详细分析了造成观测误差的空间误差源分布情况,并对误差进行了分类.在此基础上,深入研究了各类误差配准算法,结合工程实际,推导了基于测地坐标系的目标航迹转换方程;利用最小二乘配准算法推导了广义最小二乘算法,仿真结果表明了算法的有效性.但当量测噪声相对系统偏差较大时,估计结果会变差,因而减小初始校准误差是提高系统观测精度的最重要环节.

Space registration is the pivotal part in the multi-targets tracking system. According to the real multi-radar network, the space errors are classified, and the distribution of sources which creating measurement errors are analyzed in detail. Furthermore, some registration algorithms are lucubrated, and the equation of target flight path transforming based on Earth Coordinate of Earth Center is deduced, the general least square algorithm based on LS is also done, simulation results show its efficiency. When system errors are not relative sufficiently small, the algorithm will become invalid. So reducing the errors of system original adjustment is very important.