Thread: Sonar Quiz #43

Originally Posted by IceNitro

That's why I don't answer your questions that much. I aint that sharp. I still don't see it ; well kind of... I thought it was a trick question.
Great shots of the school. Thanks RICKIE

The items in blue are the double echo of the barren bottom ...where the initial sound pulse reflected off the bottom, then reflected off the water's surface, then made a 2nd trip to the bottom, then back to the xducer ...

This is why the double echo is always twice the depth = the sound pulse made 2 trips to the bottom ...


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The items is green are the double echo of the sound pulse reflecting off the concrete slabs ...



Rickie