NDLI: Coherence-Improving Algorithm for Image Pairs of Bistatic SARs With Nonparallel Trajectories

Content Provider	IEEE Xplore Digital Library
Author	Xiaolei Lv Mengdao Xing Yunkai Deng Shouhong Zhang Yirong Wu
Copyright Year	1980
Abstract	Ground moving target indication (GMTI) is one of the most important applications in a general bistatic synthetic aperture radar (SAR) system, where the transmitter and receiver move along nonparallel trajectories with different velocities. In order to improve the capability of clutter cancellation in bistatic SAR/GMTI processing, the coherence between two echoes collected by two receivers is investigated, and the full-coherence conditions are derived. A new coherence-improving algorithm for general bistatic SAR complex image pairs is proposed, which can be realized in the following steps: 2-D range azimuth prefiltering processing, relative geometric deformation correction, and image registration. An approximate implementation of 2-D prefiltering and the corresponding prefilter parameter analysis are also given. Last, two numerical experiment results are given to demonstrate the effectiveness of the proposed algorithm.
Sponsorship	IEEE Geoscience and Remote Sensing Society IEEE URSI
Starting Page	2884
Ending Page	2898
Page Count	15
File Size	799804
File Format	PDF
ISSN	01962892
Volume Number	47
Issue Number	8
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-08-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Synthetic aperture radar Clutter Transmitters Trajectory Azimuth Image registration Layout Signal processing algorithms Reflectivity Radar tracking synthetic aperture radar (SAR) 2-D prefilter bistatic SAR coherence ground moving target indication (GMTI) image registration
Content Type	Text
Resource Type	Article
Subject	Earth and Planetary Sciences Electrical and Electronic Engineering

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