| 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.[点击复制] |
| WEI Haijun,ZHU Jubo,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[点击复制] |
|
| |
|
|
| 本文已被：浏览 6731次 下载 6429次 |
| 基于粗精度DEM的复杂地形InSAR基线估计方法 |
| 韦海军1, 朱炬波2, 梁甸农1 |
|
(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)
|
| 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。 |
| 关键词: 合成孔径雷达 干涉测量 SRTM DEM 基线 |
| DOI： |
| 投稿日期：2009-10-12 |
| 基金项目: |
|
| An Accurate Baseline Estimate Method for Rugged Terrain Utilize Rough DEM |
| WEI Haijun1, ZHU Jubo2, LIANG Diannong1 |
|
(1.College of Electronic Science and Engineering, National Univ. of Defense Technology, Changsha 410073, China;2.College of Science, National Univ. of Defense Technology, Changsha 410073, China)
|
| 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-1/2tandem data over the Mani mountain area of Tibet. Some representative methods of baseline estimation were then compared with the method introduced and the results showed more accurate estimation. |
| Keywords: synthetic aperture radar (SAR) interferometry SRTM DEM baseline |
|
|
