Some nice terms to search. I need online sources .. I'll look in local scientific library and Amazon but it's quite possible some books are unreachable for me.
This Lloyd's effect .. all I found is that it has something to do with interference. I can simulate interference easily with my tracer, but it all depends in concrete frequency. Active sonar will be affected much more. Noise should not be affected at all. Consider these diagrams as noise transfer, no interference.
Don't you know something more specific about it ?
Sure surface affects especially the frequency transfer. Very low frequencies (with wavelength much bigger that wavelength of the surface waves would not be affected, while high frequencies fill be affected with small waves. 1Hz has roughly 1600m sound-waves, which means it needs similar size sea-waves to be affected. Which is rare. But 1kHz has 1.6m sound-wave, so it will be scattered heavily in common conditions. It's just common rules of diffraction, I guess some more effects can apply in the sea.
I'll try take this into account somehow, but this really starts to be 'acting like' more then 'computing'.
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