Programmable LFM Signal Processor.
DEPARTMENT OF THE AIR FORCE WASHINGTON DC
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The linear frequency modulation signal processor may be programmed to be a matched filter for any pulse compression ratio less than or equal to the square of the number of bandpass filters. The processor is implemented by using a fast Fourier transform FFT for the filter bank. The implementation shown assumes digital processing at baseband using in-phase and quadrature I and Q channels and a FFT for the filter bank. The I and Q channels are fed through a sidelobe filter, a short input tapped delay line, and a set of M complex multipliers to the FFT. The FFT outputs are connected to a long tapped delay line through a second set of complex multipliers whose outputs are summed in the long tapped delay line summer. Author
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