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A new parametric autofocus technique with a high accuracy of flight-parameter estimation dedicated to strip-mode synthetic aperture radar (SAR) systems is presented. Most of the known autofocus techniques require high-reflectivity targets (man-made targets) to obtain a properly focused SAR image. The technique proposed in this paper allows flight parameters to be estimated effectively, even for a...
Most of known autofocus techniques properly focusing synthetic aperture radar (SAR) images for high signal to noise ratio (SNR) data include many strong prominent points. This paper presents advantages of using the coherent MapDrift (CMD) technique for precise estimation of radar platform flight parameters, even for low SNR SAR data. To show the advantages, the CMD has been compared with the classical...
Most of known autofocus techniques used for SAR (Synthetic Aperture Radar) processing are iteration techniques [1, 2, 3]. This paper presents a new concept of non iterative Autofocus MapDrift algorithm. The proposed technique properly estimates radar platform flight parameters applied after only one iteration. It enables quick focusing of the image of the observed area. The proposed technique can...
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