Yin T.,National University of Singapore |
Christophe E.,National University of Singapore |
Liew S.C.,National University of Singapore |
Ong S.H.,Engineering Drive
International Geoscience and Remote Sensing Symposium (IGARSS) | Year: 2010
Baseline calibration is needed in most of SAR interferometry processing. An iterative optimization of baseline with constrain of relative platform position is presented in this paper. The SAR passes which gives inaccurate platform position is successfully detected and calibrated using this algorithm. After processing, new estimated baseline improves the quality of interferogram. Existence of reference Digital Elevation Model (DEM) error and atmospheric phase screen (APS) can also be detected from the convergence value. This method is based on a reversed concept of platform position estimation from interferometric result. Validation of method performed on multiple SAR images over Singapore. © 2010 IEEE.