Detection of Moving Targets by Focusing in UWB SAR—Theory and Experimental Results
| Document type: | Journal Articles |
|---|---|
| Article type: | Original article |
| Peer reviewed: | Yes |
| Full text: | |
| Author(s): | Viet Thuy Vu, Thomas Sjögren, Mats Pettersson, Anders Gustavsson, Lars Ulander |
| Title: | Detection of Moving Targets by Focusing in UWB SAR—Theory and Experimental Results |
| Journal: | IEEE Transactions on Geoscience and Remote Sensing |
| Year: | 2010 |
| Volume: | 48 |
| Issue: | 10 |
| Pagination: | 3799 - 3815 |
| ISSN: | 0196-2892 |
| Publisher: | IEEE |
| ISI number: | 000283349400019 |
| Other identifiers: | http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=5473083 |
| Organization: | Blekinge Institute of Technology |
| Department: | School of Engineering - Dept. of Electrical Engineering (Sektionen för ingenjörsvetenskap - Avd. för elektroteknik) School of Engineering S-371 79 Karlskrona +46 455 38 50 00 http://www.bth.se/ing/ |
| Authors e-mail: | vtv@bth.se, tsj@bth.se, mats.pettersson@bth.se, anders.gustavsson@foi.se, lars.ulander@foi.se |
| Language: | English |
| Abstract: | 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. |
| Subject: | Signal Processing\Radar and Sonar Signal Processing\General |
| Keywords: | Coherent All RAdio BAnd Sensing (CARABAS)-II, detection, fast backprojection, fast factorized backprojection (FFBP), moving target, multichannel, single channel, synthetic aperture radar (SAR), ultrawideband (UWB), UWB chirp scaling (UCS). |
