Relation between i.f. and baseband chirp filtering

Relation between i.f. and baseband chirp filtering

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Extracting the modulus output for a complex signal convolved with a complex chirp impulse response requires four real filters at baseband plus components for summing, differencing, squaring and square rooting. Modulating the signal onto a carrier allows the equivalent processing to be performed to a good approximation by a single i.f. filter.


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