An advanced co-registration method for TOPSAR interferometry

• Published in: 2015 IEEE International Geoscience and Remote Sensing Symposium (IGARSS) pp. 5240 - 5243
• Main Authors: Sakar, Nida, Brcic, Ramon, Rodriguez Gonzalez, Fernando, Yague-Martinez, Nestor
• Format: Conference Proceeding
• Language: English
• Published: IEEE 01-07-2015
• Subjects: Azimuth; Co-registration; Coherence; Doppler effect; Electrostatic discharges; ESD; Estimation; Radio frequency; Sensitivity; Sentinel-1; TOPS
• ISSN: 2153-6996; 2153-7003
• DOI: 10.1109/IGARSS.2015.7327016

This paper presents a robust mis-registration estimator based on ESD method for TOPSAR interferometry. For the in-terferometric applications of TOPSAR mode data, a master and slave SLC pair requires a co-registration accuracy in the milli-pixel order due to the large Doppler centroid frequency variation. Although ESD method estimates the mis-registration with the required sensitivity, a prior fine co-registration step is a prerequisite. This paper presents an advanced co-registration method that relaxes the fine co-registration requirement of the ESD and improves the estimation sensitivity. Experimental results with Sentinel-1A data are shown to validate the proposed method.