一种新的高速跳频同步方法  

A new synchronization scheme for high-speed FH communication system

作　　者：朱礼亚[1] 杜兴民[1] 张曦[1] 

机构地区：[1]空军工程大学工程学院,西安710038

出　　处：《电光与控制》2007年第5期94-97,共4页Electronics Optics & Control

摘　　要：跳频电台同步系统要求具有良好的抗干扰性能和保密性能,同时达到快速同步。针对传统的时间信息和同步字头相结合的同步方案,提出了一种基于差分跳频原理的高速跳频同步方案。发送端利用载波的前后相关性来传送同步信息,接收端通过频率侦测获取同步信息,简化了传统方案中同步信息的编码、调制等过程。仿真结果表明,方案的同步性能有较大改善,同步时间短,抗干扰能力强。The synchronization system of Frequency-Hopping （FH） broadcasting station requires well antijamming and security performance and quick synchronization. Based on the traditional synchronization scheme of combining synchronization-head with Time of Day （TOD）, the authors put forward a synchronization scheme of a high-speed FH system based on the Differential Frequency Hopping （DFH） theory. The transmitter transmits the synchronization information by using the relativity of adjacent carrier waves, and the receiver gains them by detecting the carrier waves＇ frequency. The scheme simplifies traditional transmit process including encoding and modulation. Simulation result shows that the performance of synchronization is improved, the time for synchronization is shortened, and the anti-jamming performance is also improved.

关 键 词：高速跳频通信 时间信息 差分跳频 G函数 短时傅里叶变换 初始同步 

分 类 号：V271.4[航空宇航科学与技术—飞行器设计] TN914.4[电子电信—通信与信息系统]