面向非平稳通信波形设计的安全可控序列设计

项目名称： 面向非平稳通信波形设计的安全可控序列设计

项目编号： No.61501099

项目类型： 青年科学基金项目

立项/批准年度： 2016

项目学科： 无线电电子学、电信技术

项目作者： 李胜强

作者单位： 电子科技大学

项目金额： 20万元

中文摘要： 基于物理参量非平稳化的非平稳通信信号设计是突破传统安全通信信号设计的新方法。其中，决定系统非平稳性质的安全可控序列设计是非平稳通信系统设计的核心问题之一。本项目通过对非平稳通信波形机理的研究，提出用伪随机序列控制通信波形物理参量的非平稳通信波形构建方法；揭示伪随机序列和非平稳通信波形间的内在联系，基于有限域分析方法构造具有非平稳化特性的伪随机序列，进而构造出非平稳通信波形，为实现非平稳通信奠定基础。本项目对于不同时间点上的随机过程参量分析其样本空间上m阶矩的分布特征，通过定义m阶矩的差值序列来建立随机过程的非平稳度量，为衡量非平稳通信信号的抗侦测、抗截获性能提供理论依据。本项目的研究成果对抗侦测、抗截获通信信号和系统的研究有较大参考价值，对物理层安全通信也有积极影响。此外，非平稳信号广泛存在于通信、雷达、医学等多个工程领域，因此，本项目的研究成果具有较大的理论意义和工程应用价值。

中文关键词： 非平稳通信；伪随机序列；非平稳度量

英文摘要： Non-stationary communications signal design based on the dynamic physical parameters is a novel design compared with the conventional secure communications signal design. Among them, the secure and controlled sequence design is one of the key issues for the design of non-stationary communication system design. Through the study on the mechanism of the non-stationary communications waveforms, propose the means to build non-stationary communications waveforms by using pseudorandom sequences to control the physical parameters of communications waveforms; By revealing the internal relations between the pseudorandom sequences and non-stationary communications waveforms, construct the pseudorandom sequences by the means of finite field methods, and then construct the non-stationary communications waveforms, thereby laying the foundation for the realization of non-stationary communications. This project analysis the distribution of the m-order moment on the sample space of the stochastic processes parameter on different time, establish non-stationary metrics by defining the difference sequence of m-order moment, which provide a theoretical basis for measuring anti-detection and anti-interception performance of non-stationary communication signals. Research results of the project have a greater reference value for the study on the anti-detection and anti-interception of communication signals and systems, but also have a positive impact on the physical layer security. In addition, non-stationary signals is widely present in a number of engineering fields such as communications, radar and medical. Therefore, the research results of this project has great theoretical significance and engineering applications value.

英文关键词： Non-stationay communications;Pseudorandom sequence;Non-stationarity measure