Electronics Forums > General Electronics Q&A

What The Heck is CHIRP?

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Curt:
While window shopping for a fish finder/GPS I keep seeing CHIRP. Can someone please tell me what CHIRP is and why it seems to be such a big selling point?  (shrug)

Nightmare:
Nutshell version: Normal 2d sonar uses single pulses (pings) of a single frequency to get the information translated into the picture on your screen. CHIRP uses a series of pulses - each a slightly different frequency - in each ping. This creates a more refined picture on your screen and provides increased target separation.

This is my best understanding of its essence.

Curt:
OK. Thanks @Nightmare I like "nutshell" explanations best!  :thumbup:

Jig Man:
My new units have 3 chirp settings and I can't for the life of me see much difference in them and regular 2d sonar.

Nightmare:
 :rolleyes:
Ain't vouchin' for it - just 'splaining' what I know about it

Ain't got it so can't say either way. Too invested in HDS G2 to think about even buying "cheap" chirp (Hook).

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