基于卫星无源探测的飞行器主动段轨道估计

The Estimation of Vehicle Orbit in Boost Phase Based on Passive Detection of Satellite

首先提出了一种在双星无源飞行器主动段探测中,可同时估计双星测量的系统误差并给出目标预测轨道的方法.将卫星测量值误差在小角度条件下转化为卫星测量轴的偏转角,以双星逐点交汇定位法得出的轨道为基准估计系统误差,利用最小二乘思想将模型参数估计问题转化为优化问题,使用遗传算法对目标飞行器模型参数进行估计.而后讨论了一种通过加强模型约束,由单星无源探测估计目标轨道的方法.

A method to estimate system error of measuring of detector and orbit parameter of target vehicle simultaneously in passive detection of vehicle orbit in boost phase by two satellites is described in this paper first. In this way, the system deviation is calculated by transform it to rotation angle of measuring axis of probe in condition that the error is extremely small. Then the task of parameter estimation is transformed to optimization question by least square method. The latter can be solved by genetic algorithms. Finally, by increasing the constraints of dynamic model of target, the method of estimation of vehicle orbit based on passive detection of only one satellite is introduced.