差分跳频G函数的抗截获设计综述  

Study on Anti-Interception Design of DHF G-function

作　　者：屈晓旭[1] 娄景艺[1] 胡凌[2] 

机构地区：[1]海军工程大学电子工程学院 [2]75753部队

出　　处：《通信技术》2011年第11期16-19,共4页Communications Technology

摘　　要：G函数设计是差分跳频抗截获设计的关键。这里研究了差分跳频系统的抗截获设计原则及各项抗截获性能指标的检验方法,分类综述了应用现有G函数的差分跳频系统的抗截获性能。研究表明已有G函数设计方案一般难以获得理想的抗截获性能,或者系统的抗截获性能较好,但系统在译码、同步等方面实现复杂。讨论了应用时频扰动类G函数的差分跳频系统设计模型:时变G函数模型和FH/DFH模型。采用这两种设计模型可在不显著增加系统复杂度的基础上,提高差分跳频通信系统的抗截获性能。G-function design is the key to improve the anti-interception performance of DFH（differential frequency hopping） system.Anti-interception design criterions and evaluation methods for various anti-interception performance indexes are discussed first,and G-functions proposed in literatures are classified and anti-interception performances of DFH systems applying different G-function are studied in detail.This study indicates that these G-function designs are hard to achieve ideal or better anti-interception performances,and also complicated in decoding or synchronization implementation.The DFH system design models with time-or frequency-disturbance G-functions are explored,including time-varying G-function model and FH/DFH model.Theses design model could improve anti-interception performance of DHF system without any increase of system complexity.

关 键 词：差分跳频 G函数 抗截获 时域扰动 频域扰动 

分 类 号：TN914.41[电子电信—通信与信息系统]