Joint use of multi-orbit high-resolution SAR interferometry for DEM generation in mountainous area

Zhang, Lu; Jiang, Houjun; Liao, Mingsheng; Balz, Timo; Wang, Teng

Joint use of multi-orbit high-resolution SAR interferometry for DEM generation in mountainous area

Type

Conference Paper

Authors

Zhang, Lu
Jiang, Houjun
Liao, Mingsheng
Balz, Timo
Wang, Teng

KAUST Department

Earth Science and Engineering Program
Physical Science and Engineering (PSE) Division

Date

2014-07

Abstract

SAR interferometry has long been regarded as an effective tool for wide-area topographic mapping in hilly and mountainous areas. However, quality of InSAR DEM product is usually affected by atmospheric disturbances and decorrelation-induced voids, especially for data acquired in repeat-pass mode. In this paper, we proposed an approach for improved topographic mapping by optimal fusion of multi-orbit InSAR DEMs with correction of atmospheric phase screen (APS). An experimental study with highresolution TerraSAR-X and COSMO-SkyMed datasets covering a mountainous area was carried out to demonstrate the effectiveness of the proposed approach. Validation with a reference DEM of scale 1:50,000 indicated that vertical accuracy of the fused DEM can be better than 5 m.

Citation

Lu Zhang, Houjun Jiang, Mingsheng Liao, Balz, T., & Teng Wang. (2014). Joint use of multi-orbit high-resolution SAR interferometry for DEM generation in mountainous area. 2014 IEEE Geoscience and Remote Sensing Symposium. doi:10.1109/igarss.2014.6946444