差分跳频系统中基于迭代分解的G函数构造方法  

G-Function construction method based on iterative decomposition in adifferential frequency hopping system

作　　者：宁晓燕[1] 金鹏 王震铎 孙志国[1] NING Xiaoyan;JIN Peng;WANG Zhenduo;SUN Zhiguo(College of Information and Communication Engineering,Harbin Engineering University,Harbin 150001,China)

机构地区：[1]哈尔滨工程大学信息与通信工程学院,黑龙江哈尔滨150001

出　　处：《哈尔滨工程大学学报》2023年第5期876-883,共8页Journal of Harbin Engineering University

基　　金：中央高校基本科研业务费专项资金项目(3072021CF0809);黑龙江省自然科学基金项目(LH2021F009);国家自然科学基金项目(62001139);先进船舶通信与信息技术工业和信息化部重点实验室项目(AMCIT2101-05);黑龙江省高精度卫星导航及海洋应用重点实验室开放基金项目(HKL-2021-Y02)。

摘　　要：差分跳频是跳频技术中提高数据传输速率的一种有效方式,频率转移函数是差分跳频研究的重点,本文针对现有的频率转移函数所生成的跳频序列性质上的不足,提出了一种时变的频率转移算法,通过m序列,对频率对进行迭代分解,进而控制频率之间的对应关系,同时根据发端算法构造了解映射算法。对算法进行了理论分析和仿真验证,仿真验证表明:相比于基于m序列、RS码和混沌序列加扰的G函数算法,新的转移算法是时变的,产生的跳频序列的随机性、均匀性和安全性得到了改善,二维连续性符合卡方检验的理论值,在通信性能上也有了部分提升。Differential frequency hopping is an effective way to improve data transmission rates in frequency hopping technology,and the frequency transfer function is the focus of differential frequency hopping research.Given the deficiency of the nature of the frequency hopping sequences generated by the exisiting frequency transfer function,this paper proposes a time-varying frequency shift algorithm,in which frequency pairs are iteratively decomposed through the m sequence.The corresponding relation between frequencies is therefore controled,and at the same time,an inverse algorithm is constructed in accordance with the original algorithm.Theoretical analysis and simulation show that compared with the G function algorithm based on the m sequence,the Reed-Solomon code,and chaotic sequence scrambling,the new transfer algorithm is time-varying with frequency hopping sequence randomness,uniformity,and improved safety.The two-dimensional continuity is in accordance with the theoretical value provided by the chi-square test.Communication performance has also been partially improved.

关 键 词：差分跳频 频率转移函数 时变性 二维连续性 

分 类 号：TN914.41[电子电信—通信与信息系统]