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Originally Posted by SeaQueen
I said, the phenomenta that are important are frequency dependent. The sonic layer depth might matter a lot for a sonar operating in the thousands of Hertz band, but have an almost immeasurable effect on a sonar that operates in the hundreds of Hertz. How to capture that in the game, is tough, though, because you'd have to solve the parabolic equations somehow (See the book I recommended).
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I found some more papers on the web, especially here:
http://oalib.hlsresearch.com/PE
But man, this really goes beyond my math skills. In very very rough terms I understand what they talk about, but I'm pretty far from grasping the problem at the moment.
Will buy the book, anyway. It costs quite a lot, but I never regret buying Urick (which YOU made me to buy
), which was not so cheap too.