Hello,I'm looking for an ultrasound sensor that would return an analogic signal depending on the intensity of the said ultrasound; I don't want to measur a distance, but an the intensity of the echo (I've already got a transmitter).I don't need anything precise, or a huge range, and I'd like it to be centered around 40kHz. Any information would be precious. I hope this is not considered a repost, and that my issue is clear.Thanks in advance !
Perhaps if you explained what you actually want to do, we could help.
For certain, the author of the study you linked used very expensive, professional underwater acoustic depth sounding equipment. If the thesis is in your native language, the equipment and its usage should be clearly identified and described.This is not a project for amateurs.
I see in your link the frequent use of the term: "broadband acoustic". That tells me he was using "chirping" or frequency shift during the pulse and tying that shift to the receiver. Same is used in radar to identify the type and size of the target aircraft.Paul
Indeed, he operates with 18, 38, 70, 120, 200 and 333kHz.But I find three different transmitters that would be good enough.