| TerraSAR图像无控制定位精度研究 |
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| 引用本文： | 颜磊,邵永社. TerraSAR图像无控制定位精度研究[J]. 计算机工程与应用, 2011, 35(35): 174-176 |
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| 作者姓名： | 颜磊 邵永社 |
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| 作者单位： | 同济大学测量与国土信息工程系,上海200092;同济大学遥感空间信息技术研究中心,上海200092 |
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| 摘 要： | 针对星载TerraSAR图像无地面控制点情况下的目标定位问题,在分析利用卫星星历数据的基础上,结合SAR距离模型和地球椭球模型,提出了一种TerraSAR图像的地面目标直接定位方法。通过杭州地区数据实验结果表明,TerraSAR图像在平均高程60m的丘陵地区,无控制距离向和方位向的定位精度中误差分别达到24.588m和12.265m。
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| 关 键 词： | TerraSAR图像 卫星星历 无控制定位精度 |
| 修稿时间： | |
Analysis of location precision in TerraSAR image without reference points |
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| YAN Lei , SHAO Yongshe. Analysis of location precision in TerraSAR image without reference points[J]. Computer Engineering and Applications, 2011, 35(35): 174-176 |
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| Authors: | YAN Lei SHAO Yongshe |
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| Affiliation: | YAN Lei1,2,SHAO Yongshe1,2 1.Department of Surveying and Geo-informatics,Tongji University,Shanghai 200092,China 2.Research Center for Remote Sensing and Spatial Information,China |
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| Abstract: | A method is developed in this paper to determine the location precision of a pixel in the TerraSAR image without any ground reference points.This method utilizes the spacecraft ephemeris data and the characteristics of the SAR data to estimate the three-dimensional coordinate of the arbitrary pixel.The experiment uses the TerraSAR image of Hangzhou where the average elevation is 60 m.The location precision can attain 24.588 m at the range and 12.265 m at the azimuth with this method. |
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| Keywords: | TerraSAR image spacecraft ephemeris location precision without ground reference points |
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