Results 211 to 220 of about 16,323 (253)
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Clutter suppression method for heterogeneous environment
AEU - International Journal of Electronics and Communications, 2010Clutter suppression is a key process in ground moving target indication (GMTI). Adaptive filtering is an effective method for clutter suppression but the performance degrades severely in heterogeneous clutter environment. To solve this problem, a new clutter suppression method is proposed. The approach uses subspace tracking technique to update clutter
Jing Yu, Guisheng Liao, Zhiwei Yang
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Clutter suppression and target detection based on biparametric clutter map CFAR
IET International Radar Conference 2015, 2015Clutter map constant false alarm rate (CFAR) detectors have been utilized in radar systems, which usually uses local threshold estimates from background observations to maintain CFAR level. However, when the local observations contain irrelevant information and/or heavy clutter, its detection performance would be severely degraded. To solve the problem
C.Y. Wang, R.Y. Pan, J.H. Liu
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Clutter suppression algorithm for nonimaging data
1999 IEEE Aerospace Conference. Proceedings (Cat. No.99TH8403), 1999A clutter suppression algorithm based on principle component analysis for overhead non-imaging infrared (ONIR) focal plane data is presented and its performance evaluated. The algorithm is novel in that (1) the principle components are derived from a small subset of the pixel histories and (2) probable target pixels are reevaluated in a way that ...
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Clutter suppression using amplitude weighted waveforms
Radar Systems (RADAR 97), 1997When the range extent of clutter exceeds the PRF interval of a constant amplitude radar pulse-burst (or coherent dwell), standard Doppler filtering using an FIR filter bank with amplitude weighting on receive, no longer provides adequate clutter suppression.
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Study on DPCA Sidelobe Clutter Suppression
Applied Mechanics and Materials, 2014Due to the non-smooth movement of the platform, the actual multi-channel SAR system is difficult to satisfy the DPCA condition and it is required to compensate the motion error. Previous studies are only interested in the main lobe clutter suppression performance inside the PRF, while ignoring the sidelobe clutter outside the PRF.
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SAR clutter suppression using probability density skewness
IEEE Transactions on Aerospace and Electronic Systems, 1994A clutter suppression algorithm is described which exploits asymmetry in the probability density function (pdf) of ground clutter in synthetic-aperture radar (SAR) imagery. In the log-magnitude domain, the probability densities of returns from natural ground clutter and man-made objects exhibit opposite skewness.
R. Fogler, L.D. Hostetler, D.R. Hush
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Polarization Vector Signal Processing For Radar Clutter Suppression
1985A model is presented for a radar scatterer which simultaneously incorporates range, doppler, and polarization characteristics in the statistical sense. Any scatterer, whether it be a target or clutter, can be represented by such a model. It is shown how this environmental model contains discriminants used to design an optimal waveform and an optimum ...
Vincent C. Vannicola, Stanley Lis
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