First demonstration of spaceborne L-band bistatic single-polarization single-baseline SAR interferometry on the retrieval of forest vertical structural information
文献类型：期刊论文
| 作者 | Lei, Yang2,3; Li, Weiliang2,3; Yu, Yanghai2; Liu, Xiaotong1; Xu, Jie1; Fu, Anmin1; Wan, Jie4; Wang, Changcheng4; Huang, Wenli5; Qiu, Zixuan6 |
| 刊名 | REMOTE SENSING OF ENVIRONMENT
 |
| 出版日期 | 2025-11-01 |
| 卷号 | 329页码:114916 |
| 关键词 | Spaceborne L-band bistatic InSAR Lutan-1 Lidar GEDI ICESat-2/ATLAS Radar-lidar fusion Tropical forest Forest height Forest vertical structural information Vertical profile Underlying topography Digital terrain model (DTM) Hainan tropical rainforest national park |
| ISSN号 | 0034-4257 |
| DOI | 10.1016/j.rse.2025.114916 |
| 产权排序 | 8 |
| 文献子类 | Article |
| 英文摘要 | This paper shows the first demonstration of spaceborne L-band bistatic InSAR from the Chinese Lutan-1 mission for forest vertical structural information retrieval (in this work, namely, vertical profile, forest height, and underlying topography). With the single-polarization/baseline bistatic InSAR mode of Lutan-1, the measured few-look InSAR phase height histograms compare very well with the GEDI lidar waveforms, both capturing similar characteristics of the forest vertical structural profile. The ground finding approach based on the few-look InSAR phase height histogram is further adapted to incorporate spaceborne lidar measurements from GEDI and ICESat-2/ATLAS for more robust calibration. As for the DTM estimation, two ground finding strategies are developed: one using ample spaceborne lidar samples (with the lidar height as the feature), and the other using limited spaceborne lidar samples (with the few-look InSAR phase height standard deviation as the feature), both of which rely on the statistical model relating the underlying terrain elevation to the statistics of the few-look InSAR histogram. Then, forest height is inverted using the few-look histogram that mimics using lidar waveform to derive height metrics. The large-scale DTM and forest height mosaics of 2.74 million hectares are produced over tropical rainforest of the entire Hainan island of China. Through validation with airborne lidar data, the forest height is estimated to an accuracy of similar to 5 m for tropical forest up to 45 m tall (relative error 10-15 %). The InSAR-derived DTM has a negligible bias (mean value of the radar-lidar DTM deviation) as referenced to airborne lidar DTM, with the uncertainties (median absolute deviation or MAD) being dependent on topographic surface slopes: 3 m (<2 degrees), 4 m (2 degrees-6 degrees), 7 m (6 degrees-25 degrees), and 9 m (>25 degrees). This approach sheds light on combining ascending/descending viewing geometries of spaceborne L-band bistatic InSAR data with single polarization/baseline (e.g. Lutan-1 and its follow-on) for large-scale wall-to-wall mapping of forest vertical structural profile, height metrics/biomass, underlying topography, as well as the changes of these forest parameters. |
| URL标识 | 查看原文 |
| WOS关键词 | TANDEM-X ; TROPICAL-FOREST ; BIOMASS ; INSAR ; LIDAR |
| WOS研究方向 | Environmental Sciences & Ecology ; Remote Sensing ; Imaging Science & Photographic Technology |
| 语种 | 英语 |
| WOS记录号 | WOS:001553173800001 |
| 出版者 | ELSEVIER SCIENCE INC |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/215537]  |
| 专题 | 生态系统网络观测与模拟院重点实验室_外文论文 |
| 通讯作者 | Lei, Yang |
| 作者单位 | 1.Natl Forestry & Grassland Adm, Acad Forest & Grass Inventory & Planning, Beijing, Peoples R China; 2.Chinese Acad Sci, Natl Space Sci Ctr, Beijing, Peoples R China; 3.Univ Chinese Acad Sci, Beijing, Peoples R China; 4.Cent South Univ, Sch Geosci & Infophys, Changsha, Peoples R China; 5.Wuhan Univ, Sch Resource & Environm Sci, Wuhan, Peoples R China; 6.Hainan Univ, Sanya Nanfan Res Inst, Sanya, Peoples R China; 7.Minist Nat Resources, Land Satellite Remote Sensing Applicat Ctr, Beijing, Peoples R China; 8.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Beijing, Peoples R China |
| 推荐引用方式 GB/T 7714 | Lei, Yang,Li, Weiliang,Yu, Yanghai,et al. First demonstration of spaceborne L-band bistatic single-polarization single-baseline SAR interferometry on the retrieval of forest vertical structural information[J]. REMOTE SENSING OF ENVIRONMENT,2025,329:114916. |
| APA | Lei, Yang.,Li, Weiliang.,Yu, Yanghai.,Liu, Xiaotong.,Xu, Jie.,...&Shi, Jiancheng.(2025).First demonstration of spaceborne L-band bistatic single-polarization single-baseline SAR interferometry on the retrieval of forest vertical structural information.REMOTE SENSING OF ENVIRONMENT,329,114916. |
| MLA | Lei, Yang,et al."First demonstration of spaceborne L-band bistatic single-polarization single-baseline SAR interferometry on the retrieval of forest vertical structural information".REMOTE SENSING OF ENVIRONMENT 329(2025):114916. |
入库方式： OAI收割
来源：地理科学与资源研究所
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