Multi-carrier underwater acoustic communication method applied to deep-sea channel
An underwater acoustic communication and multi-carrier technology, which is applied in the modulation carrier system, multi-frequency code system, transmission monitoring, etc., can solve the problem of low transmission rate
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[0057] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0058] Step 1: In the present invention, the ocean is divided into a surface isothermal layer, a thermocline and a deep-sea isothermal layer, the surface isothermal layer and the deep-sea isothermal layer are positive sonic gradient water layers, and the thermocline is a negative sonic gradient water layer, wherein the surface isothermal The layer is the depth of 0-100 meters in the ocean, the thermocline is the depth of 100-300 meters, and the deep-sea isothermal layer is the depth below 300 meters. The sea depth is taken as H, and the sound source is placed at the depth h. The change of H, the negative gradient of sound velocity and the positive gradient of sound velocity on the upper and lower sides of the channel axis respectively, the horizontal transmission distance is s, the track of the sound ray bends when propagating, the sound ray path only tr...
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