基于多站遥测时差的外测定位方案误差分析模型

Error Analysis Model of Exterior Ballistic Measurement Based on Multi-Remote Stations Time Difference

在航天飞行试验末段测控中,通常目标上的合作设备已经大大减少,受实际条件限制,测量区域也难以布设足够的光测和脉冲雷达等测量装备。通过对末段遥测数据进行较为精确的配时,采用多站遥测时差进行外测定位的方法 ,仅利用末段的遥测数据就可完成对目标的定位。本文从理论上分析了多站遥测时差定位外测方案误差分析模型,并通过仿真试验验证了模型的正确性和有效性。采用本模型能够满足试验精度要求,可节省大量的外测装备,简化测控方案设计,具有易于保障的特点。

In terminal TT C of space fly test,the transponders on the target are usually reduced,restricted by actual condition,it is often very difficult to distribute enough optical and pulse measurments in the range.Exterior ballistic measurement is used based on multi-remote stations time difference by accurately distribution of the time available,the target position can be got only using the terminal remote data.In this paper,the accuracy estimation model of exterior ballistic measurement based on multi-remote stations time difference is analyzed on theory,and validated the correctness and effectiveness by emulation test.Using this model can meet the accuracy demand of test,decrease exterior measurement equipments,predigest the TT C scheme,and with the characteristic of easy to ensure.