通讯入外测弹道S型变化分析与改进

Analysis and Amelioration of Incoming Trajectory Curve Abnormity

就新一代"远望号"测量船(以下简称新船)在某次任务中,测控联调时发生的通讯入弹道速度曲线异常问题,模拟了西安卫星测控中心(以下简称西安中心)送给各测站的弹道数据,发现在把测站送给西安中心的瞬时站址数据由测量系转换至地心固连系时,复合演算出的速度值发生了S型变化,分析该现象是由于瞬时站址缺失角速度导致,最后提出了如何完善瞬时站址的结构和弹道转换的算法,并且验证了改进结果的正确性。

This article is based on analysis and amelioration of incoming trajectory curve abnormity encountered by an instrumentation ship in a tracking mission.First,trajectory curve Xi'an Satellite Control Center sends to tracking stations is analyzed.Abnormity of the velocity data in the trajectory curve is found when the data sent by the stations to Xi'an Satellite Control Center is transformed to trajectory curve.The reason is S-variation caused by lack of angular velocity data in the data sent by the tracking stations.Following verification of test results,a proposal is given on modification of the structure of the data sent to Xi'an Satellite Control Center.