系统误差对GDOP的影响分析

Effect Analysis of Systematic Error on GDOP

针对系统误差对目标定位精度的影响,从恒定系统误差与动态系统误差两个方面推导了系统误差下的目标定位精度几何稀释的计算解析式。根据推导的解析式建立了两站以及三站雷达GDOP的仿真环境,通过蒙特卡洛仿真分别对比了有无系统误差时组网雷达系统GDOP的区别。仿真显示,在假定的系统误差模型基础上,考虑系统误差时的GDOP比没有考虑系统误差时的GDOP更加精确,能够更好地在实际中辅助应用于组网雷达系统中的雷达布站。

To analyze effects of systematic error on the accuracy of targeting, the analytical formulation of the calculation of the geomet- rical dilution of precision including systematic errors is derived from two aspects as constant systematic error and dynamic systematic error. Then simulation environments including two stations as well as the three stations GI）OP（Geometric Dilution of Precision） are established based on the analytical formulation. The differences between GDOP with and without systematic errors are analyzed by Monte Carlo simula- tion. The simulation results show that taking systematic error into consideration make the GDOP more precise than that without considering the systematic error. So the results in this paper are better able to use to actual radar arrangement in radar network system.