为了提高水下信息传输安全性，提出将混沌加密技术应用于水声扩频通信中。针对扩频通信中一般扩频序列的局限性，引入离散混沌映射的混沌序列，并对常见几种离散混沌映射进行比对分析，发现Chebyshev混沌映射相较于Tent映射与Logistic映射有较为明显的优势，通过仿真评估具有加密属性的Chebyshev序列的优良特性，证实其有效性。
In order to improve the security of underwater information transmission, chaotic encryption technology is applied to underwater acoustic spread spectrum communication. In view of the limitation of general spread spectrum sequence in spread spectrum communication, the chaotic sequence of discrete chaotic map is introduced, and several common discrete chaotic maps are compared. It is found that Chebyshev chaotic map has obvious advantages over Tent map and Logistic map. The excellent characteristics of Chebyshev sequence with encryption property are evaluated by simulation, and its effectiveness is verified.
2022,44(5): 101-104 收稿日期：2020-11-25
DOI：10.3404/j.issn.1672-7649.2022.05.020
分类号：U666
作者简介：隗小斐(1992-)，男，硕士，助教，研究方向为通信与信息系统
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