中国空间科学技术

中国空间科学技术

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编队卫星空间状态参数估计量对ATI测速精度影响

王之元;易东云;姚静;   

  1. 国防科学技术大学理学院,国防科学技术大学理学院,国防科学技术大学理学院 长沙410073,长沙410073,长沙410073
  • 发布日期:2006-10-25

Influence of Formation Flying Satellites Spatial State Parameters Estimate to Velocity Precision in ATI

Wang ZhiyuanYi DongyunYao Jing(Science College,National University of Defense Technology,Changsha 410073)   

  • Online:2006-10-25

被引次数

2

摘要： 基于对影响沿航向干涉(ATI)测速精度的特征量分析,建立了卫星空间状态参数估计量与ATI测速精度特征量,特征量与测速的关联数学模型。仿真给出了不同场景设置下的特征量精度、误差传播矩阵和测量误差传递关系的精度影响因子,以及最终空间状态参数估计量对测速精度的影响。

关键词: 空间状态参数, 合成孔径雷达, 干涉测量, 精度分析, 编队飞行, 卫星

Abstract: Based on the analysis of the characteristic parameters which have influence on the radical velocity precision,two mathematical association models were established.One was between spatial state parameters estimate and characteristic parameters,another was between characteristic parameters and radical velocity precision.By simulation,characteristic parameters precision in different scenarios,error propagation matrix and the precision factors of measurement error propagation relation were obtained,and the influence of formation flying satellites spatial state parameters estimate to radical velocity precision was investigated finally.