Title :
Azimuth ambiguity of multi-channel SAR
Author :
Ma, Xile ; Sun, Zaoyu ; Dong, Zhen ; Huang, Haifeng
Author_Institution :
Sch. of Electron. Sci. & Eng., Nat. Univ. of Defense Technol., Changsha, China
Abstract :
Azimuth multi-channel synthetic aperture radar has been widely studied to realize high resolution wide swath imaging. Spectrum reconstruction algorithm deals with the main-lobe aliasing while the side-lobe spectrum still exists and is weighted by the reconstruction network as well. In the present paper, azimuth ambiguity of multi-channel strip SAR is investigated, an analytical expression of azimuth ambiguity to signal ratio is derived based on established linear model of the multi-channel signal in Doppler domain. The analysis will definitely benefit multi-channel system design.
Keywords :
radar signal processing; signal reconstruction; synthetic aperture radar; Doppler domain; azimuth ambiguity; azimuth multichannel synthetic aperture radar; high resolution wide swath imaging; linear model; multichannel SAR; multichannel signal; side-lobe spectrum; spectrum reconstruction algorithm; Azimuth; Bandwidth; Doppler effect; Image reconstruction; Mathematical model; Reconstruction algorithms; Synthetic aperture radar; azimuth ambiguity; multi-channel; synthetic aperture radar;
Conference_Titel :
Geoscience and Remote Sensing Symposium (IGARSS), 2012 IEEE International
Conference_Location :
Munich
Print_ISBN :
978-1-4673-1160-1
Electronic_ISBN :
2153-6996
DOI :
10.1109/IGARSS.2012.6350583
