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Pattern时延差编码水声通信体制利用信息码元的时延值调制信息,他的抗多途扩展干扰能力与码型种类及码型脉宽有关.扩频通信可获得扩频增益,可胜任远程水声通信,但其通信速率低是使用受限的重要原因.提出将扩频通信与Pattern时延差编码水声通信体制相结合,并采用M元扩频、多通道工作方式,构成一种新的适用于水声环境的通信方案,既可获得扩频通信的优良性能,又可提高通信速率.湖试结果验证了本文提出的M元混沌扩频多通道Pattern时延差编码水声通信方案的鲁棒性及可行性.
Pattern Delay-Difference-Encoding The underwater acoustic communication system uses the delay value modulation information of the information symbol, and its anti-multipath spread interference ability is related to the type of the code pattern and the pulse width of the pattern. The spread spectrum gain can be obtained by spreading communication Remote underwater acoustic communication, but its low communication rate is an important reason for its limited use.This paper proposes to combine spread spectrum communication with Pattern delay difference coding underwater acoustic communication system and adopt M-ary spread spectrum and multi-channel working mode to form a The new communication scheme suitable for underwater acoustic environment can not only obtain the excellent performance of spread spectrum communication but also improve the communication rate.The result of lake test verifies that the proposed M-ary chaotic spread spectrum multi-channel Pattern Delay Difference coded water sound Robustness and Feasibility of Communication Scheme.