Detection of Moving Targets by Focusing in UWB SAR-Theory and Experimental Results
Artikel i vetenskaplig tidskrift, 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.
ultrawideband (UWB)
UWB chirp scaling (UCS)
field
back-projection
single channel
objects
backprojection
fast factorized backprojection (FFBP)
wide-band sar
multichannel
Coherent All RAdio BAnd Sensing (CARABAS)-II
fast
synthetic aperture radar (SAR)
detection
synthetic-aperture radar
moving target
Författare
V. T. Vu
Blekinge Tekniska Högskola, BTH
T. K. Sjogren
Blekinge Tekniska Högskola, BTH
M. I. Pettersson
Blekinge Tekniska Högskola, BTH
A. Gustavsson
Totalförsvarets forskningsinstitut (FOI)
Lars Ulander
Chalmers, Rymd- och geovetenskap, Radarfjärranalys
IEEE Transactions on Geoscience and Remote Sensing
0196-2892 (ISSN) 15580644 (eISSN)
Vol. 48 10 3799-3815 5473083Ämneskategorier
Övrig annan teknik
DOI
10.1109/TGRS.2010.2048572