外方位元素相关性对卫星影像定位精度影响的试验分析

Test and Analysis of the Effect of Exterior Orientation Parameters Correlation on the Satellite Imaae Positionimz Accuracy

外方位元素的相关性问题一直是线阵卫星影像定位解算的难点之一。本文利用仿真数据和实际数据对外方位元素相关性及其对卫星影像定位精度的影响进行试验分析，试验结果表明，外方位元素之间存在补偿作用，利用相关的外方位元素项可有效补偿带误差外方位元素项对定位精度的影响。

The correlation problem of exterior orientation parameters （EOPs） is a long term difficulty in the positioning of line -array satellite images. In this paper, the simulation images and real high -resolution satellite images are used to test and analyze the correlation of exterior orientation element model and its effect on the positioning accuracy of satellite images. The results show that the compensation of EOPs is obvious, and correlated EOPs can be used to compensate the error of positioning.