三轴稳定型静止轨道遥感卫星指向确定的地标匹配方法

静止轨道遥感卫星与地面处于相对静止状态，但因受到内外部环境的影响，会使得其对地指向发生几何偏差，从而在地面上产生较大的定位误差，因此需要进行有效的修正。本文围绕三轴稳定型静止轨道遥感卫星拍摄地球圆盘时的指向确定问题，提出了一套基于地标匹配的指向计算方法，其中重点解决了作为基准参考的地标数据生成方法、稳健的图像与地标匹配方法，以及基于误差剔除的指向偏差计算方法等。试验表明，该方法对于解决静止轨道遥感图像指向偏差具有较好的精度和稳定性。该技术已经在我国相关卫星数据的在线处理中得到应用。

Landmark Matching Method about Pointing to the Ground of Three-axis Stabilization Geostationary Remote Sensing Satellite

Geostationary remote sensing satellite is relatively static to the earth.However,because of the influences suffered from inner factors and outer environment,an error of geometric would be happened to satellite's pointing to the ground,and it will cause a large position error on the ground,so that,an effective modification is needed.This paper proposed a set calculation method of pointing to the ground based on landmark matching,which centered on the problem of pointing to the ground when the three-axis stabilization geostationary remote sensing satellite was shooting the earth disk.This method mainly solved the following problems:the generator method of landmark data which was the datum reference,robust matching method between image and landmark,the calculation method of pointing to the ground based on error elimination,and so on.The experiment showed that,this set of method had superior accuracy and stability in solving the error of pointing to the ground of geostationary remote sensing image.This technique had been applied in the online processing of related satellite data in our country.