Moving Target Focusing in SAR Image With Known Normalized Relative Speed
نویسندگان
چکیده
منابع مشابه
SAR and Moving Target Indication
Synthetic aperture radar provides high-resolution images of the non-moving ground scene, but fails to indicate and position moving objects. A short review of the motioninduced effects occurring in SAR images will open this lecture. Like in special airborne MTI systems, the solution to the SAR MTI problem is to use an array of antennas or subapertures and several receiving channels to cancel the...
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Moving targets within SAR scenes are distorted depending on the particulars of the target motion. For small motions, the uncompensated phase of a point reflector is a sum of a term proportional to the range component of the target motion, and a more complicated term depending on the azimuth motion. The resulting phase may be analysed with time-frequency techniques since the motion effect may al...
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Synthetic aperture radar (SAR) is a well known technique for generating high-resolution images stationary scenes but it is not adapted to imaging moving targets as the movement of a target induces both a delocalization and a defocusing effect in a SAR image. The aim of this paper is to analyse the signatures of moving targets in SAR images and to present techniques to detect them, from one sing...
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Synthetic aperture radar offers high resolution images of a static scene while moving objects are often smeared and displaced in azimuth. Ground moving target indication with a monopulse system makes it possible to correct the azimuth displacement and measure an accurate individual radial velocity component of moving targets via special processing techniques. The presented method requires the f...
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For modern synthetic aperture radar (SAR), it has much more urgent demands on ground moving target indication (GMTI), which includes not only the point moving targets like cars, truck or tanks but also the distributed moving targets like river or ocean surfaces. Among the existing GMTI methods, displaced phase center antenna (DPCA) can effectively cancel the strong ground clutter and has been w...
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ژورنال
عنوان ژورنال: IEEE Transactions on Aerospace and Electronic Systems
سال: 2017
ISSN: 0018-9251
DOI: 10.1109/taes.2017.2665358