Sonar range finder.

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Sonar range finder.

Postby Kevvo16 » February 1st, 2013, 3:19 pm

I want to make a low power sonar range finder. Does anyone know of any highly directional speakers designed for specific frequencies?
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Re: Sonar range finder.

Postby k-ww » February 1st, 2013, 4:33 pm

It helps to know how you define 'low power' and what range you are looking for.
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Re: Sonar range finder.

Postby st2000 » February 2nd, 2013, 11:18 am

Usually people who want direction under water make a phased array** sonar system. I think a side scan sonar*** is a special case where only one axis of direction is used. If you were thinking above water you probably want to start google'ing for something called sodar instead****.

** http://en.wikipedia.org/wiki/Phased_array

*** http://en.wikipedia.org/wiki/Side-scan_sonar

**** http://en.wikipedia.org/wiki/SODAR

What I always wanted to try (and never did) was to use a cheap sonar depth gauge, aim it sideways from the boat traveling in a straight line at constant velocity. Then feed the data into a computer to create a something like a "synthetic aperture side scanning sonar".*****

***** http://en.wikipedia.org/wiki/Synthetic_aperture_sonar

-good luck
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Re: Sonar range finder.

Postby richardparker07 » April 30th, 2013, 4:24 am

Kevvo16 wrote:I want to make a low power sonar range finder. Does anyone know of any highly directional speakers designed for specific frequencies?


What Range are you looking exactly for., once try with this link here you can find different types of Sonar Range Finders..

If haven't get your requirement ,Reply back with Exact Specifications needed... If found any shall suggest you .
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Re: Sonar range finder.

Postby stormeporm » May 1st, 2013, 2:59 am

You can buy low power ultrasonic ranging modules pretty cheap.
http://ledsee.com/index.php/sensors-oth ... ule-detail
Dont know if thats what your looking for.
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Re: Sonar range finder.

Postby st2000 » May 1st, 2013, 7:52 am

The OP said sonar, not sodar. Since they never followed up we will never know which they was interested in.

Hum, now that I looked up the two I am not sure I can say sonar is water and sodar is air:

http://en.wikipedia.org/wiki/Sonar
http://en.wikipedia.org/wiki/Sodar

Perhaps someone knows for sure.
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Re: Sonar range finder.

Postby stormeporm » May 1st, 2013, 12:33 pm

Lol I had the same problem, so I posted it anyway.
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