Title :
Airborne Spotlight SAR Imaging with Super High Resolution based on Back-Projection and Autofocus Algorithm
Author :
Tan, Weixian ; Li, Daojing ; Hong, Wen
Author_Institution :
Nat. Key Lab. of Microwave Imaging Technol., Beijing
Abstract :
In this paper, we consider the super resolution millimeter wave spotlight SAR imaging problem through the simulation under the given Strap-down Inertial Navigation System/Global Positioning System (SINS/GPS) and introduce the Phase Gradient Algorithm (PGA) into the Back-Projection (BP) for SAR focusing. The imaging results indicate that it is feasible to obtain super high resolution imagery at the millimeter wave using the SINS/GPS.
Keywords :
Global Positioning System; airborne radar; geophysical techniques; remote sensing by radar; synthetic aperture radar; Global Positioning System; PGA; Phase Gradient Algorithm; SINS/GPS; Strap-down Inertial Navigation System; airborne spotlight SAR imaging; autofocus algorithm; back-projection algorithm; motion measurement; polynomial curve fitting method; super resolution millimeter wave; synthetic aperture radar; Azimuth; Electronics packaging; Focusing; Global Positioning System; Image resolution; Millimeter wave measurements; Motion measurement; Radar polarimetry; Silicon compounds; Spatial resolution; 5cm resolution; Millimeter wave Spotlight SAR; back-projection algorithm; phase gradient algorithm;
Conference_Titel :
Geoscience and Remote Sensing Symposium, 2008. IGARSS 2008. IEEE International
Conference_Location :
Boston, MA
Print_ISBN :
978-1-4244-2807-6
Electronic_ISBN :
978-1-4244-2808-3
DOI :
10.1109/IGARSS.2008.4779969
