Howtosignalprocessing
What is a chirp in signal processing?
A chirp is a signal in which the frequency increases (up-chirp) or decreases (down-chirp) with time. In some sources, the term chirp is used interchangeably with sweep signal.
What is a chirp wave?
A chirp is a signal in which the frequency increases or decreases with time. This picture shows a linear chirp waveform; a sinusoidal wave that increases in frequency linearly over time.
Why do we use chirp signal?
In general, chirp generation can involve linear or nonlinear phase modulation that modifies the instantaneous frequency. Linear chirp is used because the signal processing required once the pulse is received is simpler to implement and can occur faster in the radar transceiver or DSP block.
