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In this paper, we analyze the characteristics of the radio frequency interference (RFI) data in the time-frequency domain. A matching pursuit (MP) method is proposed for RFI suppression in ultra-wideband synthetic aperture radar (UWB-SAR) system. The algorithm decomposes the SAR echo over a modified Gabor dictionary to remove the significant RFI. The performance for the algorithm is investigated by...
Pulse sequence analysis is a crucial part in the research on multi-function radar (MFR) behaviours. It is the base for MFR behaviour recognition and prediction to extract radar words accurately from the intercepted radar pulse sequence. The common radar word extraction methods are only based on the time-of-arrival (TOA) of pulses, which perform not well when dealing with the complex signals with multiple...
The improved approaches for a single source direction-of-arrival estimation in a far-field and near-field cases are proposed. In the far-field case the multichannel maximum likelihood frequency estimation along the uniform linear array is used for direct calculation of the single real spatial frequency. In the near-field case the same method is applied for short sub-arrays for retrieving a set of...
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