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

Volume

5

fYear

2008

fDate

7-11 July 2008

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;

fLanguage

English

Publisher

ieee

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

Type

conf

DOI

10.1109/IGARSS.2008.4780057

Filename

4780057