| 利用视线向量修正进行SPOT-5影像高精度立体定位 |
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| 引用本文： | 胡文元. 利用视线向量修正进行SPOT-5影像高精度立体定位[J]. 武汉大学学报 ( 信息科学版), 2010, 35(6): 733-737. |
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| 作者姓名： | 胡文元 |
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| 作者单位： | 1山西省工程测绘院,太原市鱼池街9号,030002 |
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| 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。
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| 关 键 词： | SPOT-5影像 视线向量修正 几何定位 |
| 收稿时间： | 2010-04-23 |
| 修稿时间： | 2010-04-23 |
Geopositioning of SPOT-5 Stereo Images Based on Line-of-Sight Calibration |
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| HU Wenyuan. Geopositioning of SPOT-5 Stereo Images Based on Line-of-Sight Calibration[J]. Geomatics and Information Science of Wuhan University, 2010, 35(6): 733-737. |
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| Authors: | HU Wenyuan |
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| Affiliation: | 1Institute of Shanxi Surveying and Mapping,9 Yuchi Street,Taiyuan 030002,China |
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| 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. |
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| Keywords: | SPOT-5 image line-of-sight rectification stereo positioning |
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