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- Sjögren, TomasBlekinge Tekniska Högskola,Avdelningen för signalbehandling (author)
Moving Target Relative Speed Estimation and Refocusing in Synthetic Aperture Radar Images
- Article/chapterEnglish2012
Publisher, publication year, extent ...
- IEEE,2012
- electronicrdacarrier
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- LIBRIS-ID:oai:DiVA.org:bth-7048
- https://urn.kb.se/resolve?urn=urn:nbn:se:bth-7048URI
- https://doi.org/10.1109/TAES.2012.6237601DOI
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- Language:English
- Summary in:English
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Notes
- In this paper, a method for moving target relative speed estimation and refocusing based on synthetic aperture radar (SAR) images is derived and tested in simulation and on real data with good results. Furthermore, an approach on how to combine the estimation method with the refocusing method is introduced. The estimation is based on a chirp estimator that operates in the SAR image and the refocusing of the moving target is performed locally using subimages. Focusing of the moving target is achieved in the frequency domain by phase compensation, and therefore makes it even possible to handle large range cell migration in the SAR subimages. The proposed approach is tested in a simulation and also on real ultrawideband (UWB) SAR data with very good results. The estimation method works especially well in connection with low frequency (LF) UWB SAR, where the clutter is well focused and the phase of the smeared moving target signal becomes less distorted. The main limitation of the approach is target accelerations where the distortion increases with the integration time.
Subject headings and genre
- TEKNIK OCH TEKNOLOGIER Elektroteknik och elektronik Signalbehandling hsv//swe
- ENGINEERING AND TECHNOLOGY Electrical Engineering, Electronic Engineering, Information Engineering Signal Processing hsv//eng
- WIDE-BAND SAR
- PARAMETER-ESTIMATION
- CALIBRATION
- OBJECTS
Added entries (persons, corporate bodies, meetings, titles ...)
- Vu, VietBlekinge Tekniska Högskola,Avdelningen för signalbehandling(Swepub:bth)vtv (author)
- Pettersson, MatsBlekinge Tekniska Högskola,Avdelningen för signalbehandling(Swepub:bth)mtp (author)
- Gustavsson, Anders (author)
- Ulander, Lars (author)
- Blekinge Tekniska HögskolaAvdelningen för signalbehandling (creator_code:org_t)
Related titles
- In:IEEE Transactions on Aerospace and Electronic Systems: IEEE48:3, s. 2426-24360018-92511557-9603
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