RE: Chirps – Modelling the Spectral Components of Signals Whose Frequency Is Changing

e14 Contributor — Sat, 15 Sep 2012 08:03:18 GMT

Nature invents by evolution, and nature's discoveries are near perfect.

Chirp is used for improving detection of received/reflected signal. Chirp signal pulse can be compressed to improve accuracy of distance measurements and to improve signal to noise ratio.

Also, chirp uses less energy fo same quality of signal compared to fixed frequency short pulses : lower energy chirp pulses can be transmitted and fewer chirp pulses need to be transmitted.

http://en.wikipedia.org/wiki/Pulse_compression

RE: Chirps – Modelling the Spectral Components of Signals Whose Frequency Is Changing

DAB — Sat, 29 Oct 2011 20:52:13 GMT

Very interesting.

I would have thought that the frequency would increase as the bat got closer to get more rapid updates. Clearly the sound processing inside the bat has some unique capabilities.

Thank you for bringing this discussiion to the group.

DAB