Accuracy Assessment of a Digital Elevation Model Constructed Using the KOMPSAT-5 Dataset
The Interferometric Synthetic Aperture Radar (InSAR) has significantly advanced in its usage for analyzing surface information such as displacement or elevation. In this study, we evaluated a digital elevation model (DEM) constructed using X-band KOMPSAT-5 interferometric datasets provided by the Ko...
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MDPI AG
2025-02-01
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| Series: | Remote Sensing |
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| Online Access: | https://www.mdpi.com/2072-4292/17/5/826 |
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| author | Je-Yun Lee Sang-Hoon Hong Kwang-Jae Lee Joong-Sun Won |
| author_facet | Je-Yun Lee Sang-Hoon Hong Kwang-Jae Lee Joong-Sun Won |
| author_sort | Je-Yun Lee |
| collection | DOAJ |
| description | The Interferometric Synthetic Aperture Radar (InSAR) has significantly advanced in its usage for analyzing surface information such as displacement or elevation. In this study, we evaluated a digital elevation model (DEM) constructed using X-band KOMPSAT-5 interferometric datasets provided by the Korea Aerospace Research Institute (KARI). The 28-day revisit cycle of KOMPSAT-5 poses challenges in maintaining interferometric correlation. To address this, four KOMPSAT-5 images were employed in a multi-baseline interferometric approach to mitigate temporal decorrelation effects. Despite the slightly longer temporal baselines, the analysis revealed sufficient coherence (>0.8) in three interferograms. The height of ambiguity ranged from 59 to 74 m, which is a moderate height of sensitivity to extract topography over the study area of San Francisco in the USA. Unfortunately, only ascending acquisition mode datasets were available for this study. The derived DEM was validated against three reference datasets: Copernicus GLO-30 DEM, ICESat-2, and GEDI altimetry. A high coefficient of determination (R<sup>2</sup> > 0.9) demonstrates the feasibility of the interferometric application of KOMPSAT-5. |
| format | Article |
| id | doaj-art-44c25e4d2cff47269570ab06d94ebbaf |
| institution | DOAJ |
| issn | 2072-4292 |
| language | English |
| publishDate | 2025-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Remote Sensing |
| spelling | doaj-art-44c25e4d2cff47269570ab06d94ebbaf2025-08-20T02:59:15ZengMDPI AGRemote Sensing2072-42922025-02-0117582610.3390/rs17050826Accuracy Assessment of a Digital Elevation Model Constructed Using the KOMPSAT-5 DatasetJe-Yun Lee0Sang-Hoon Hong1Kwang-Jae Lee2Joong-Sun Won3Department of Geological Sciences, Pusan National University, Busan 46241, Republic of KoreaDepartment of Geological Sciences, Pusan National University, Busan 46241, Republic of KoreaSatellite Application Division, Korea Aerospace Research Institute, Daejeon 34133, Republic of KoreaDepartment of Earth System Sciences, Yonsei University, Seoul 03722, Republic of KoreaThe Interferometric Synthetic Aperture Radar (InSAR) has significantly advanced in its usage for analyzing surface information such as displacement or elevation. In this study, we evaluated a digital elevation model (DEM) constructed using X-band KOMPSAT-5 interferometric datasets provided by the Korea Aerospace Research Institute (KARI). The 28-day revisit cycle of KOMPSAT-5 poses challenges in maintaining interferometric correlation. To address this, four KOMPSAT-5 images were employed in a multi-baseline interferometric approach to mitigate temporal decorrelation effects. Despite the slightly longer temporal baselines, the analysis revealed sufficient coherence (>0.8) in three interferograms. The height of ambiguity ranged from 59 to 74 m, which is a moderate height of sensitivity to extract topography over the study area of San Francisco in the USA. Unfortunately, only ascending acquisition mode datasets were available for this study. The derived DEM was validated against three reference datasets: Copernicus GLO-30 DEM, ICESat-2, and GEDI altimetry. A high coefficient of determination (R<sup>2</sup> > 0.9) demonstrates the feasibility of the interferometric application of KOMPSAT-5.https://www.mdpi.com/2072-4292/17/5/826KOMPSAT-5multi-baselineinterferometric synthetic aperture radar (InSAR)digital elevation model (DEM) |
| spellingShingle | Je-Yun Lee Sang-Hoon Hong Kwang-Jae Lee Joong-Sun Won Accuracy Assessment of a Digital Elevation Model Constructed Using the KOMPSAT-5 Dataset Remote Sensing KOMPSAT-5 multi-baseline interferometric synthetic aperture radar (InSAR) digital elevation model (DEM) |
| title | Accuracy Assessment of a Digital Elevation Model Constructed Using the KOMPSAT-5 Dataset |
| title_full | Accuracy Assessment of a Digital Elevation Model Constructed Using the KOMPSAT-5 Dataset |
| title_fullStr | Accuracy Assessment of a Digital Elevation Model Constructed Using the KOMPSAT-5 Dataset |
| title_full_unstemmed | Accuracy Assessment of a Digital Elevation Model Constructed Using the KOMPSAT-5 Dataset |
| title_short | Accuracy Assessment of a Digital Elevation Model Constructed Using the KOMPSAT-5 Dataset |
| title_sort | accuracy assessment of a digital elevation model constructed using the kompsat 5 dataset |
| topic | KOMPSAT-5 multi-baseline interferometric synthetic aperture radar (InSAR) digital elevation model (DEM) |
| url | https://www.mdpi.com/2072-4292/17/5/826 |
| work_keys_str_mv | AT jeyunlee accuracyassessmentofadigitalelevationmodelconstructedusingthekompsat5dataset AT sanghoonhong accuracyassessmentofadigitalelevationmodelconstructedusingthekompsat5dataset AT kwangjaelee accuracyassessmentofadigitalelevationmodelconstructedusingthekompsat5dataset AT joongsunwon accuracyassessmentofadigitalelevationmodelconstructedusingthekompsat5dataset |