Title :
Achieving HRWS Images with Space-borne Bistatic SAR with Multiple Phase Centers
Author :
Lai, Tao ; Dong, Zhen ; Liang, Dian-Nong ; He, Feng
Author_Institution :
Sch. of Electron. Sci. & Eng., Nat. Univ. of Defense Technol., Changsha
Abstract :
An algorithm for achieving High-resolution wide-swath (HRWS) images in bistatic space-borne SAR with multiple phase centers is presented. Based on the analysis of the correlation of echos from all phase centers, a signal model is built that all echoes combined form a periodically nonuniform undersampled signal. Then the echoes with Doppler ambiguities are reconstructed to unambiguous uniform samplings which can be processed with conventional imaging algorithms. Simulation trials prove that the approach is valid and robust.
Keywords :
Doppler radar; correlation theory; radar signal processing; spaceborne radar; synthetic aperture radar; HRWS images; SAR echo correlation analysis; echo Doppler ambiguity; high resolution wide swath images; multiple phase centers; signal model; space borne bistatic SAR; Azimuth; Helium; Image reconstruction; Image sampling; Personal communication networks; Satellites; Signal analysis; Space technology; Spaceborne radar; Synthetic aperture radar; Bistatic SAR; Doppler Ambiguities; Multiple Phase Centers; Unambiguous Reconstruction;
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.2008.4780057
