Two-sided Long Baseline Radargrammetry from Ascending-Descending Orbits with Application to Mapping Post-seismic Topography in the West Sichuan Foreland Basin
文献类型：期刊论文
| 作者 | CHENG Hai-qin ; CHEN Qiang ; LIU Guo-xiang ; YANG Ying-hui ; LIU Li-yao |
| 刊名 | Journal of Mountain Science
 |
| 出版日期 | 2014-09 |
| 卷号 | 11期号:5页码:1298-1307 |
| 关键词 | Ascending and descending orbits Two-sided SAR radargrammetry Long baseline Image parallax Accuracy assessment |
| 通讯作者 | CHEN Qiang |
| 英文摘要 | One-sided ascending or descending Synthetic Aperture Radar (SAR) stereo-radargrammetry has limited accuracy of topographic mapping due to the short spatial baseline (~100 km) and small intersection angle. In order to improve the performance and reliability of generating digital elevation model (DEM) from spaceborne SAR radargrammetry, an exploration of two-sided stereo-radargrammetry from the combination of ascending and descending orbits with geometric configuration of long spatial baseline (~1000 km) was conducted in this study. The slant-range geometry between SAR sensors to the earth surface and the Doppler positioning equations were employed to establish the stereoscopic intersection model. The measurement uncertainty of two-sided radargrammetric elevation was estimated on the basis of radar parallax of homogeneous points between input SAR images. Two stereo-pairs of ALOS/PALSAR (Advanced Land Observing Satellite/Phased Array type L-band Synthetic Aperture Radar) acquisitions with the orbital separation almost 1080 km over the west Sichuan foreland basin with rolling topography in southwestern China were employed in the study to obtain the up-to-date terrain data after the 2008 Wenchuan earthquake that hit this area. The quantitative accuracy assessment of two-sided radargrammetric DEM was performed with reference to field GPS observations. The experimental results show that the elevation accuracy reaches 5.5 m without ground control points (GCPs) used, and the accuracy is further improved to 1.5 m with only one GPS GCP used as the least constraint. The theoretical analysis and testing results demonstrate that the two-sided long baseline SAR radargrammetry from the ascending and descending orbits can be a very promising technical alternative for large-area and high accuracy topographic mapping. |
| 收录类别 | SCI |
| 公开日期 | 2014-09-17 |
| 源URL | [http://ir.imde.ac.cn/handle/131551/7256]  |
| 专题 | 成都山地灾害与环境研究所_Journal of Mountain Science _Journal of Mountain Science-2014_Vol11 No.5 |
| 推荐引用方式 GB/T 7714 | CHENG Hai-qin,CHEN Qiang,LIU Guo-xiang,et al. Two-sided Long Baseline Radargrammetry from Ascending-Descending Orbits with Application to Mapping Post-seismic Topography in the West Sichuan Foreland Basin[J]. Journal of Mountain Science,2014,11(5):1298-1307. |
| APA | CHENG Hai-qin,CHEN Qiang,LIU Guo-xiang,YANG Ying-hui,&LIU Li-yao.(2014).Two-sided Long Baseline Radargrammetry from Ascending-Descending Orbits with Application to Mapping Post-seismic Topography in the West Sichuan Foreland Basin.Journal of Mountain Science,11(5),1298-1307. |
| MLA | CHENG Hai-qin,et al."Two-sided Long Baseline Radargrammetry from Ascending-Descending Orbits with Application to Mapping Post-seismic Topography in the West Sichuan Foreland Basin".Journal of Mountain Science 11.5(2014):1298-1307. |
入库方式： OAI收割
来源：成都山地灾害与环境研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。