Comparison of Integrating GF-7 and ICESat-2 Laser Altimetry Data with High-resolution Stereo Images for Stereo Mapping
Currently, two types of satellite laser altimetry systems are in operation: the full waveform linear system and the single-photon-counting system, which exhibit significant differences in both data format and processing methodologies. It remains uncertain which satellite laser altimetry technology o...
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| Format: | Article |
| Language: | English |
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Copernicus Publications
2025-07-01
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| Series: | ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences |
| Online Access: | https://isprs-annals.copernicus.org/articles/X-G-2025/165/2025/isprs-annals-X-G-2025-165-2025.pdf |
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| _version_ | 1850117919860588544 |
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| author | J. Chen G. Li J. Guo J. Peng J. Peng |
| author_facet | J. Chen G. Li J. Guo J. Peng J. Peng |
| author_sort | J. Chen |
| collection | DOAJ |
| description | Currently, two types of satellite laser altimetry systems are in operation: the full waveform linear system and the single-photon-counting system, which exhibit significant differences in both data format and processing methodologies. It remains uncertain which satellite laser altimetry technology offers greater advantages in assisting stereo mapping of high-resolution optical imagery. To evaluate the effectiveness of those two satellite laser altimetry technologies in supporting optical imagery stereo mapping, this study extracted laser elevation control points from both GF-7 satellite and ICESat-2 laser altimetry data, and designed a specialized bundle adjustment workflow for GF-7 satellite stereo images incorporating laser elevation control points. Comparative experiments were conducted across both flat and mountainous regions. Results demonstrate that laser elevation control points derived from both GF-7 satellite and ICESat-2 effectively improved the elevation accuracy of stereo mapping of GF-7 satellite images. However, the ICESat- 2 laser altimetry data has advantages in quantity and distribution, and the combined bundle adjustment accuracy of the two survey areas is slightly better than that of the GF-7 satellite laser altimetry data. |
| format | Article |
| id | doaj-art-9f6df2ea430345a29cc7ca0f605f692f |
| institution | OA Journals |
| issn | 2194-9042 2194-9050 |
| language | English |
| publishDate | 2025-07-01 |
| publisher | Copernicus Publications |
| record_format | Article |
| series | ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences |
| spelling | doaj-art-9f6df2ea430345a29cc7ca0f605f692f2025-08-20T02:35:59ZengCopernicus PublicationsISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences2194-90422194-90502025-07-01X-G-202516517110.5194/isprs-annals-X-G-2025-165-2025Comparison of Integrating GF-7 and ICESat-2 Laser Altimetry Data with High-resolution Stereo Images for Stereo MappingJ. Chen0G. Li1J. Guo2J. Peng3J. Peng4Land Satellite Remote Sensing Application Center, Ministry of Natural Resources, Beijing, 100048, ChinaLand Satellite Remote Sensing Application Center, Ministry of Natural Resources, Beijing, 100048, ChinaWuhan University, Wuhan, Hubei, 430072, ChinaLand Satellite Remote Sensing Application Center, Ministry of Natural Resources, Beijing, 100048, ChinaShandong University of Science and Technology, Qingdao, Shandong, 266590, ChinaCurrently, two types of satellite laser altimetry systems are in operation: the full waveform linear system and the single-photon-counting system, which exhibit significant differences in both data format and processing methodologies. It remains uncertain which satellite laser altimetry technology offers greater advantages in assisting stereo mapping of high-resolution optical imagery. To evaluate the effectiveness of those two satellite laser altimetry technologies in supporting optical imagery stereo mapping, this study extracted laser elevation control points from both GF-7 satellite and ICESat-2 laser altimetry data, and designed a specialized bundle adjustment workflow for GF-7 satellite stereo images incorporating laser elevation control points. Comparative experiments were conducted across both flat and mountainous regions. Results demonstrate that laser elevation control points derived from both GF-7 satellite and ICESat-2 effectively improved the elevation accuracy of stereo mapping of GF-7 satellite images. However, the ICESat- 2 laser altimetry data has advantages in quantity and distribution, and the combined bundle adjustment accuracy of the two survey areas is slightly better than that of the GF-7 satellite laser altimetry data.https://isprs-annals.copernicus.org/articles/X-G-2025/165/2025/isprs-annals-X-G-2025-165-2025.pdf |
| spellingShingle | J. Chen G. Li J. Guo J. Peng J. Peng Comparison of Integrating GF-7 and ICESat-2 Laser Altimetry Data with High-resolution Stereo Images for Stereo Mapping ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences |
| title | Comparison of Integrating GF-7 and ICESat-2 Laser Altimetry Data with High-resolution Stereo Images for Stereo Mapping |
| title_full | Comparison of Integrating GF-7 and ICESat-2 Laser Altimetry Data with High-resolution Stereo Images for Stereo Mapping |
| title_fullStr | Comparison of Integrating GF-7 and ICESat-2 Laser Altimetry Data with High-resolution Stereo Images for Stereo Mapping |
| title_full_unstemmed | Comparison of Integrating GF-7 and ICESat-2 Laser Altimetry Data with High-resolution Stereo Images for Stereo Mapping |
| title_short | Comparison of Integrating GF-7 and ICESat-2 Laser Altimetry Data with High-resolution Stereo Images for Stereo Mapping |
| title_sort | comparison of integrating gf 7 and icesat 2 laser altimetry data with high resolution stereo images for stereo mapping |
| url | https://isprs-annals.copernicus.org/articles/X-G-2025/165/2025/isprs-annals-X-G-2025-165-2025.pdf |
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