利用视线向量修正进行SPOT-5影像高精度立体定位

详细信息

Geopositioning of SPOT-5 Stereo Images Based on Line-of-Sight Calibration

摘要: 介绍了SPOT-5卫星影像的严格几何处理模型及视线向量修正的原理,推导了基于视线向量修正的多像光束法平差模型。对SPOT-5影像进行实验,验证了影像系统误差的存在。将视线向量修正法的定位精度与轨道姿态误差直接修正法的定位结果进行对比,结果表明,视线向量修正法仅采用5个控制点就可以获得轨道姿态误差直接修正法采用10个控制点的定位精度。
- SPOT-5影像 /
- 视线向量修正 /
- 几何定位
Abstract: The rigorous geometric model of SPOT-5 images is introduced firstly,and a new geopositioning method based on line-of-sight rectification is proposed.Then,we deduce the bundle adjustment of line-of-sight calibration.Test results using SPOT-5 images show that using a little GCPs the systematic error can be reduced effectively after adjusting the look angles,and the object positioning accuracy can be impoved.Comparative experiment shows that line-of-sight rectification can provide similar position accuracy in case of 5 control points,with direct correcting of orbit and attitude error in case of 10 control points.
- SPOT-5 image /
- line-of-sight rectification /
- stereo positioning