Results 181 to 190 of about 2,637 (215)
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IR Polarization for Natural Clutter Suppression
2018 IEEE Research and Applications of Photonics In Defense Conference (RAPID), 2018IR Polarization can help to find man-made objects in scenes primarily made up of the natural environment. A model was developed to predict and explain results in short range, on-the-move situations. Test results show that Polarization contrast nearly always exceeds radiance contrast and generally suppresses background clutter.
Francis Pantuso +4 more
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Radar Waveforms for Suppression of Extended Clutter
IEEE Transactions on Aerospace and Electronic Systems, 1967A common problem in waveform design is to adapt the transmitted signal to the target environment in order that the interference from extended fields of scatterers is reduced. This problem is investigated here for the special case of detection of a single target in the ``vicinity'' of an extended clutter space.
August W. Rihaczek, Richard L. Mitchell
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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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Suppression of Ionospheric Es Clutter in HFSWR
2006 CIE International Conference on Radar, 2006Ionospheric clutters from sporadic E-layer are often observed in 200 km-coverage HFSWR. One kind of the Es-layer clutters is found to have coherent time much longer than that of sea echoes. The feature is exploited in the proposal of a new algorithm to suppress this kind of clutter based on eigen value decomposition and subspace ...
Yin Wei +3 more
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Suboptimal Simulation and Suppression of Clutter Signals
IEEE Transactions on Aerospace and Electronic Systems, 1976Two digital filters are presented, which are suited for generating (Correlation) or suppressing (decorrelation) by approximation time-discrete signals with preset autocorrelation function from white noise. The advantage of these suboptimal filters is that the determination of their coefficients is very simple.
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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 reflection suppression algorithm in synthetic-aperture radar
2017 Signal Processing: Algorithms, Architectures, Arrangements, and Applications (SPA), 2017Clutter reflection suppression algorithm in synthetic-aperture radar and technique of its analysis are proposed in the article. The proposed algorithm allows to increase the signal detection efficiency with closely located sources of clutter due to the use of a priori data of static objects of the infrastructure.
Dorosinskiy Leonid +2 more
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An Adaptive MTI for Weather Clutter Suppression
IEEE Transactions on Aerospace and Electronic Systems, 1982A digital realization of an adaptive clutter-locking loop is presented. The purpose of the loop is to estimate the mean Doppler frequency of the clutter. The clutter spectrum is then shifted toward the zero Doppler by this estimate. A fixed moving target indicator (MTI) canceler following the loop suppresses the shifted clutter.
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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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