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The linear stepped chirp radar suffers from (a) signal-to-noise ratio (SNR) losses due to amplitude weighting used to suppress nominal range sidelobes both in sub-pulse and inter-pulse compression and (b) range ambiguities due to periodicities in the inverse discrete Fourier transform (IDFT). The paper analyses the root cause of range sidelobes and proposes a new easily realizable non-linear stepped...
Polyphase DFT filterbank is an efficient structure for channelized receivers, but its flexibility limited by the fixed relationship between decimating factor and channel number. In this paper, a flexible and efficient channelized receiver structure was proposed based on weighted overlap-add filterbank. In the structure, shift of input signals substitute shift of time windows. Filter coefficients are...
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