中国空间科学技术

中国空间科学技术

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弱测量数据下的关机时间估计及其精度分析

谢文平;陈继业;   

  1. 邵阳学院,邵阳学院 邵阳422000,邵阳422000
  • 发布日期:2005-12-25

Study on the Estimate and Accuracy of Burnout Time with Week Survey Data

Xie Wenping Chen Jiye(Shaoyang University,Shaoyang 422000)   

  • Online:2005-12-25

摘要： 通过分析关机后无助推的飞行器落点预报的问题,可以知道落点的精度取决于关机点处的轨道参数,即时间、速度和位置的准确程度,其中关机时间是影响落点精度的主要因素。文章主要研究了在测量数据不完整或缺少的情况下对关机时间的估计问题,并对其精度作了分析,并给出了仿真结果。

关键词: 关机时间, 轨道参数, 精度分析

Abstract: The position accuracy depends on three trajectory parameters at burnout,which are the accurate degree of time,speed and position.These can be calculated by analyzing aerocraft′s(impact) position without power after burnout.And the burnout time is the most important factor.The estimate of burnout time and its precision are studied with week survey data.At last the result of Monte-Carlo simulation is given.