| 基于粗精度DEM的复杂地形InSAR基线估计方法 |
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| 引用本文： | 韦海军,朱炬波,梁甸农.基于粗精度DEM的复杂地形InSAR基线估计方法[J].国防科技大学学报,2010,32(1):74-78,89. |
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| 作者姓名： | 韦海军 朱炬波 梁甸农 |
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| 作者单位： | 1. 国防科技大学,电子科学与工程学院,湖南,长沙,410073
2. 国防科技大学,理学院,湖南,长沙,410073 |
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| 摘 要： | 基线精度对合成孔径雷达干涉测量极其重要,在研究传统基线估计方法的基础上,提出了一种基于粗精度DEM的基线估计方法。利用SRTM数字高程及初始轨道数据去除干涉相位中的地形条纹,通过分析剩余条纹的空间频率估计精确基线,具有不依赖于精确轨道数据、不受地形限制的优点。利用西藏玛尼山区ERS1/2数据进行了实测数据验证,实验结果表明得到的基线精度优于传统方法。
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| 关 键 词： | 合成孔径雷达 干涉测量 SRTM DEM 基线 |
| 收稿时间： | 2009/10/12 0:00:00 |
An Accurate Baseline Estimate Method for Rugged Terrain Utilize Rough DEM |
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| WEI Haijun,ZHU Jubo and LIANG Diannong.An Accurate Baseline Estimate Method for Rugged Terrain Utilize Rough DEM[J].Journal of National University of Defense Technology,2010,32(1):74-78,89. |
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| Authors: | WEI Haijun ZHU Jubo and LIANG Diannong |
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| Institution: | 1.College of Electronic Science and Engineering;National Univ.of Defense Technology;Changsha 410073;China;2.College of Science;China |
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| Abstract: | Baseline estimation is important to generate accurate DEM with SAR interferometry.A novel method for baseline estimation was introduced after an initial review of classical methods.The SRTM DEM and coarse orbital parameter were first used to produce a topographic-free residual interferogram.Accurate orbital parameter was then achieved by spatial-frequency analysis of the residual interferogram.This method has the advantage of spatial and precise orbital free ability.Validation was carried out with ERS-1/2 t... |
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| Keywords: | SRTM DEM synthetic aperture radar (SAR) interferometry SRTM DEM baseline |
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