Detection of Moving Targets by Focusing in UWB SAR-Theory and Experimental Results
Journal article, 2010
Moving-target detection in ultrawideband (UWB) synthetic aperture radar (SAR) is associated with long integration time and must accommodate azimuth focusing for reliable detection. This paper presents the theory on detection of moving targets by focusing and experimental results on single-channel SAR data aimed at evaluating the detection performance. The results with respect to both simulated and real data show that the ability to detect moving targets increases significantly when applying the proposed detection technique. The improvement in signal-to-clutter noise ratio, which is a basic requisite for evaluating the performance, reaches approximately 20 dB, using only single-channel SAR data. This gain will be preserved for the case of multichannel SAR data. The reference system for this study is the airborne UWB low-frequency SAR Coherent All RAdio BAnd Sensing II.
fast factorized backprojection (FFBP)
field
objects
UWB chirp scaling (UCS)
multichannel
synthetic aperture radar (SAR)
ultrawideband (UWB)
single channel
back-projection
detection
synthetic-aperture radar
moving target
wide-band sar
fast
backprojection
Coherent All RAdio BAnd Sensing (CARABAS)-II
Author
V. T. Vu
Blekinge Tekniska Hogskola
T. K. Sjogren
Blekinge Tekniska Hogskola
M. I. Pettersson
Blekinge Tekniska Hogskola
A. Gustavsson
Totalforsvarets forskningsinstitut
Lars Ulander
Chalmers, Earth and Space Sciences, Radar Remote Sensing
IEEE Transactions on Geoscience and Remote Sensing
0196-2892 (ISSN)
Vol. 48 10 3799-3815Subject Categories (SSIF 2011)
Other Engineering and Technologies not elsewhere specified
DOI
10.1109/TGRS.2010.2048572