基于合作式照射源的双基地雷达的定位精度分析

Ranging accuracy analysis of bistatic radar based on co-operative irradiation source

根据双基地雷达对目标的空间定位,在极坐标系下,应用阵地标定信息0ε、β0和L及雷达测量信息εR、βR和Rs给出单基距离解算模型.分析了双基地雷达定位存在的误差源及相应的单基解算误差分布特性.针对高度8 000 m的典型目标,通过计算机仿真,对双基定位精度进行了综合分析,给出了误差分布图.根据仿真结果,在实际应用中,通过多部雷达坐标变换及加权融合,可以有效提高单基距离定位精度.

For bistatic radar based on co-operative irradiation source,with the position demarcating parameters ε0,β0,L and radar measuring parameters εR,βR,Rs,in polar coordinates,a single-distance calculation model is given in this paper.The error source of bistatic radar system and the distribution characteristics of single-distance calculating model are analyzed.In view of the 8000m typical high goals,biostatic radar positioning accuracy is simulated on the computer with the error plot.According to the analysis of simulation results,the accuracy of single-distance positioning can be improved availably in the practical application when transformation of coordinates and weighting association are applied in the multi-radars.