基于测速定轨体制的布站几何优化设计

Optimization of the Distribution Geometry of Stations Based on the System of Orbit Determining by Use of Rate Data

测速定轨体制下弹道参数估计的精度与布站几何的关系不同于传统的测距测速体制。从定轨的原理出发,分析测速体制下布站几何对弹道参数估计精度的影响,并采用遗传算法,在一定空域范围内无约束搜索和给定备选站址中的搜索两种应用背景下,进行布站几何的优化。在遗传算法的设计中,还考虑了不同适应度函数的选取及算法的稳定性等问题。仿真实验表明本文的方法优化效果显著。

In the system of orbit determining by use of rate data, the relationship between the accuracy of the estimation and the distribution geometry of stations was different from the one in conventional system which was based on measurements of rang and rang rate. In this paper, we began with the principle of orbit determining by use of rate data, analysed how the distribution geometry impact the accuracy of the estimation , and utilized the genetic algorithm to optimize the distribution geometry in two backgrounds, one was the unconstrained search in certain space, and the other was the search in some given stations. In the design of genetic algorithm, we considered the selection of different fitness functions and the robustness of the algorithm and so on. The simulation indicates that the effect of optimization is evident.