As nonlinear least square(NLS)is rarely applied in target motion analysis(TMA)interiorly,NLS of bearings-only TMA is studied and methods to solve NLS based on genetic algorithms(GA)are put forward.

• 鉴于非线性最小二乘法在国内目标运动分析中应用较少的现状,研究了纯方位系统的非线性最小二乘解法,提出了遗传算法的求解方法。