摘要
文章在基于传统姿轨参数的高分辨率卫星遥感影像定向模型基础上,用轨道半径变化率代替轨道偏心率和近地点幅角,并通过差商内插法求解姿轨参数的偏导系数,使平差所需控制点减少为4个。对SPOT-5HRG影像的试验表明,影像定向后像方检查点中误差小于±2pixels,对地定位精度可满足1∶50 000比例尺测图要求。
This paper advanced an orbit-attitude orientation model of high resolution remote sensing imagery based on present research. Compared with present model, the eccentricity and perigee argument of elliptical orbit were replaced by orbit radius variety rate. In the parameters least-squares estimation process, an improved difference interpolation method was used to calculate the differential coefficients of orbit-attitude parameters. With these methods, the number of required ground control points was reduced to 4. The experiment with SPOT 5 HRG images indicated that, the RMSE of image checking points would be within ±2 pixels after image orientation. This empirical result verified that the georeferencing accuracy could meet the requirements of the specifications of 1 ： 50 000 scale mapping.
出处
《测绘科学》
CSCD
北大核心
2014年第9期77-82,共6页
Science of Surveying and Mapping
关键词
影像定向
严格几何处理模型
姿轨参数
对地目标定位
精度
image orientation
rigorous geometric processing model
orbit attitude parameters
objeer positioning
accuracy
