Howtosignalprocessing
- What is a chirp in signals?
- What is the formula for chirp signal?
- What is a chirp wave?
- What is a quadratic chirp?
What is a chirp in signals?
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 the formula for chirp signal?
y = chirp( t , f0 , t1 , f1 ) generates samples of a linear swept-frequency cosine signal at the time instances defined in array t . The instantaneous frequency at time 0 is f0 and the instantaneous frequency at time t1 is f1 .
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.
What is a quadratic chirp?
If a linear relationship exists between frequency and time, the chirp is known as a linear frequency mod- ulated (LFM) chirp. A quadratic relationship between frequency and time results in a quadratic frequency modulated (QFM) or quadratic chirp signal.
