敏捷卫星立体定位角元素影响分析

为精确开展敏捷卫星效能评估,合理制定机动能力及其测量部件指标,首先针对敏捷卫星利用平台大角度姿态机动,以单线阵CCD相机实现立体成像的特点,分析了单线阵与三线阵立体定位角元素影响差异。其次建立了敏捷卫星立体定位精度评估模型,进行了内、外方位元素与角元素相关性分析,给出了各误差近似解析算法。解析分析定量给出了满足定位精度要求时敏捷卫星立体成像角方位元素及其测量精度指标的取值范围。

Analysis on Attitude Angle Impacting Stereo Positioning Accuracy for Agility Satellite

In order to accurately evaluate the agility satellite effectiveness and set the reasonable indices of maneuvering ability and measuring component,the influence on the stereo position accuracy was compared between the satellite with single-linear-array CCD camera(SLAC) and the one with three-linear-array, based on the agility satellite mapping synchronously during the maneuvering.The agility satellite stereo mapping position accuracy evolution model was established.The approximate analytic algorithm of the errors were given according to the correlation between the inner and outer elements with angular orientation elements. Mathematical calculation shows that the indices of the agility satellite stereo mapping angle elements and measurement accuracy meet the requirements of the position accuracy.