Absolute geolocation accuracy of high-resolution spotlight TerraSAR-X imagery – validation in Wuhan. Issue 4 (1st October 2016)

• Record Type: Journal Article
• Authors: Wang, Jinghui; Balz, Timo; Liao, Mingsheng
• Is Part Of: Geo-spatial information science. Volume 19:Issue 4(2016)
• Page Start: 267
• Page End: 272
• Publication Date: 2016-10-01
• Subjects: Geolocation -- stereo SAR -- TerraSAR-X -- GPS; Geographic information systems -- Periodicals; Cartography -- Data processing -- Periodicals; Surveying -- Data processing -- Periodicals; Remote sensing -- Periodicals; 526.0285
• DOI: 10.1080/10095020.2016.1258183
• Languages: English
• ISSNs: 1009-5020

Abstract

Abstract: TerraSAR-X (TSX) can acquire high-resolution SAR images and due to its high orbit precision as well as its ability to acquire data from different off-nadir viewing angles, the high-precision stereo geolocation can be obtained. In this study, we investigate the absolute geolocation accuracy of TSX high-resolution images in Wuhan, China. We present a direct stereo SAR geolocation method and analyze the 2D and 3D geoposition accuracy of two corner reflectors. The sub-meter localization accuracy was achieved using only atmospheric correction information available in the TSX metadata.