A DEM fusion method for ascending and descending orbit StereoSAR DEMs in complicated mountain areas considering SAR echo intensity
文献类型：期刊论文
| 作者 | Cai, Guo-lin; Shen, Dong; Zhang, Ao-li; Yu, Hai-hua; Zhang, Xuan-yu |
| 刊名 | JOURNAL OF MOUNTAIN SCIENCE
 |
| 出版日期 | 2021 |
| 卷号 | 18期号:1页码:101-110 |
| 关键词 | Mountain areas StereoSAR Ascending orbits Descending orbits DEM fusion SAR echo intensity |
| ISSN号 | 1672-6316 |
| DOI | 10.1007/s11629-020-6269-y |
| 英文摘要 | To extract the high-quality DEM in complicated mountain areas, a DEM fusion method for ascending and descending orbit StereoSAR DEMs considering Synthetic Aperture Radar (SAR) echo intensity is proposed. After the analysis for the influence of terrain features and SAR side-looking imaging characteristics on radar echo intensity and DEM accuracy, four TerrasAR-X images with the stripmap mode and the 3 m spatial resolution covering a certain area of Maoxian County, Sichuan Province, China, was selected as the experimental area. StereoSAR technology was used to extract the ascending orbit StereoSAR DEM and the descending orbit StereoSAR DEM, respectively, and the corresponding radar echo intensity map was calculated. Then, while comparing the radar echo intensity corresponding to the same point position, DEM fusion was carried out, and the accuracy of DEM before and after the fusion was analyzed with the ground points measured by GNSS-RTK as reference data. Finally, a high-quality DEM with a 3 m spatial resolution in the experimental area was obtained. The DEM accuracy was improved on all slopes, and the mean absolute deviation (MAD) improved to 4.798 m, the standard deviation (SD) improved to 6.087 m and the LE90 improved to 40.48 m. The experimental results indicate that the fusion method of high-resolution ascending and descending orbit StereoSAR DEMs considering SAR echo intensity can effectively extract DEM with high accuracy and reliability, which can provide technical support for obtaining high-quality terrain information in similar areas. |
| 语种 | 英语 |
| WOS记录号 | WOS:000607413000007 |
| 源URL | [http://ir.imde.ac.cn/handle/131551/57150]  |
| 专题 | Journal of Mountain Science_Journal of Mountain Science-2021_Vol18 No.1 |
| 推荐引用方式 GB/T 7714 | Cai, Guo-lin,Shen, Dong,Zhang, Ao-li,et al. A DEM fusion method for ascending and descending orbit StereoSAR DEMs in complicated mountain areas considering SAR echo intensity[J]. JOURNAL OF MOUNTAIN SCIENCE,2021,18(1):101-110. |
| APA | Cai, Guo-lin,Shen, Dong,Zhang, Ao-li,Yu, Hai-hua,&Zhang, Xuan-yu.(2021).A DEM fusion method for ascending and descending orbit StereoSAR DEMs in complicated mountain areas considering SAR echo intensity.JOURNAL OF MOUNTAIN SCIENCE,18(1),101-110. |
| MLA | Cai, Guo-lin,et al."A DEM fusion method for ascending and descending orbit StereoSAR DEMs in complicated mountain areas considering SAR echo intensity".JOURNAL OF MOUNTAIN SCIENCE 18.1(2021):101-110. |
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。