NDLI: An improved scatter selection method for phase gradient autofocus algorithm in SAR/ISAR autofocus

Content Provider	IEEE Xplore Digital Library
Author	Tuo Fu Meiguo Gao Yuan He
Copyright Year	2003
Description	Author affiliation: Dept. of Electron. Eng., Beijing Inst. of Technol., China (Tuo Fu; Meiguo Gao; Yuan He)
Abstract	The phase gradient autofocus (PGA) is a state of art technique for phase error correction of synthetic aperture radar (SAR) and inverse synthetic aperture radar (ISAR). It exploits the redundancy of phase error information among range bins by selecting the strongest scatter for each range bin and then synthesizes them. The motivation of this paper is based on the observation that the redundancy of phase error information is also among the cross-range (azimuth) direction in the image domain. A new scatter selection scheme is proposed to better utilize the phase error information contained in the image. The validity of our new prominent scatters selection method for PGA algorithm is theoretically analyzed and tested with some numeral simulation. It shows that a faster convergence speed can be obtained by our new method.
Sponsorship	IEEE Circuits and Syst. Soc. (CASS) IEEE R10 CASS IEEE Beijing Section Chinese Neural Networks Council Circuits and Information Processing Committee, CASS-CIE Southeast Univ., China
Starting Page	1054
Ending Page	1057
File Size	214516
Page Count	4
File Format	PDF
ISBN	0780377028
DOI	10.1109/ICNNSP.2003.1281050
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2003-12-14
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Algorithm design and analysis Art Azimuth Redundancy Radar scattering Error correction Inverse synthetic aperture radar Synthetic aperture radar Electronics packaging Testing
Content Type	Text
Resource Type	Article

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