摘要
针对天基光学传感器网络对目标的定位精度分析难题,提出一种基于多因素分析的目标定位精度分析方法。首先,根据目标到光学传感器像平面的转换关系,建立目标观测模型。其次,分析目标定位过程中的各种误差源,通过引入地惯坐标系下的目标视线矢量作为中间变量,推导出目标三维位置、目标视线矢量以及目标像平面位置三者之间的误差传递矩阵。在此基础上,根据最小二乘准则建立多颗星观测时的目标定位精度理论分析模型。不同条件下的理论定位精度以及蒙特卡罗(Monte-Carlo)仿真结果验证了该理论分析模型的有效性,部分结论可以为传感器调度等工程应用提供参考。
An novel analysis method of target location accuracy of multiple factors is proposed for the space-based optical sensor network. A measurement model is established using the transformation from target stereo position to focal plane. Then, possible error sources about target location are analyzed. By introducing the line-of-sight vector in the earth-centered inertial coordination as a temporary variable, error transmission matrices among the target stereo poistion, the line-of-sight and the target measurement position in the focal plane are derived. Furthermore, a theoretical analysis model of target location accuracy is established based on least squared criterion. The efficiency of this analysis model is verified by Monte Carlo simulation. Some results could provide references for engineering applications, e.g. multiple-sensor management.
出处
《光学学报》
EI
CAS
CSCD
北大核心
2011年第2期247-253,共7页
Acta Optica Sinica
基金
武器装备预研基金(9140A21041110KG0148)资助课题
关键词
传感器
定位精度
多因素分析
观测模型
sensor
location accuracy
multiple-factor analysis
measurement model
