三机时差频差联合定位算法

Three-plane Joint Location Algorithm Based on TDOA/FDOA

针对平面三机对辐射源定位的场景,提出2种基于牛顿迭代法的定位方程组求解算法:平均处理算法和最小二乘迭代算法。通过仿真数据验证2种算法的有效性,并比较2种算法的优劣,发现平均处理算法更有利于解决定位模糊,最小二乘迭代算法更有利于提高定位精度,提出2种算法联合的解算思路。提供仿真数据,说明定位精度随三机布局方式的变化,得出结论:在保持副机到主机距离不变的情况下,三机在同一直线航迹上时具有全局最高定位精度。

For the scene of three-plane location of emitter,the two location algorithms such as arithmetical average estimator and least square iteration estimator are put forth based on two dimension Newton iteration algorithm. The former is good at deleting location uncertainty,the latter at improving locating accuracy. So the combined method is generated. The simulati^n data show that the variation of location accuracy varies with planes layout. It is concluded that the most accurate location is available when three planes share the same linear track and maintain distance from assistant plane to host plane invariable.