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http://dx.doi.org/10.7780/kjrs.2020.36.6.2.11

Performance Evaluation of KOMPSAT-3 Satellite DSM in Overseas Testbed Area  

Oh, Kwan-Young (Satellite Application Division, Korea Aerospace Research Institute)
Hwang, Jeong-In (National Land Satellite Center, National Geographic Information Institute)
Yoo, Woo-Sun (Technical Team, Indyware)
Lee, Kwang-Jae (Satellite Application Division, Korea Aerospace Research Institute)
Publication Information
Korean Journal of Remote Sensing / v.36, no.6_2, 2020 , pp. 1615-1627 More about this Journal
Abstract
The purpose of this study is to compare and analyze the performance of KOMPSAT-3 Digital Surface Model (DSM) made in overseas testbed area. To that end, we collected the KOMPSAT-3 in-track stereo image taken in San Francisco, the U.S. The stereo geometry elements (B/H, converse angle, etc.) of the stereo image taken were all found to be in the stable range. By applying precise sensor modeling using Ground Control Point (GCP) and DSM automatic generation technique, DSM with 1 m resolution was produced. Reference materials for evaluation and calibration are ground points with accuracy within 0.01 m from Compass Data Inc., 1 m resolution Elevation 1-DSM produced by Airbus. The precision sensor modeling accuracy of KOMPSAT-3 was within 0.5 m (RMSE) in horizontal and vertical directions. When the difference map was written between the generated DSM and the reference DSM, the mean and standard deviation were 0.61 m and 5.25 m respectively, but in some areas, they showed a large difference of more than 100 m. These areas appeared mainly in closed areas where high-rise buildings were concentrated. If KOMPSAT-3 tri-stereo images are used and various post-processing techniques are developed, it will be possible to produce DSM with more improved quality.
Keywords
KOMPSAT-3; $Pl{\acute{e}}iades$ tri-stereo; Elevation1 DSM;
Citations & Related Records
Times Cited By KSCI : 13  (Citation Analysis)
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