一种新型水声信号同步的DSP实现  

A novel synchronized methods of underwater acoustic signal scheme based on DSPs

作　　者：韩冲[1] 张效民[1] 李通旭 陈瑜[2] 

机构地区：[1]西北工业大学航海学院,陕西西安710072 [2]浙江大学城市学院,浙江杭州310015

出　　处：《电子设计工程》2014年第14期107-109,共3页Electronic Design Engineering

基　　金：西北工业大学基础研究基金(JC20110210)

摘　　要：针对复杂水声信道下的水声通信系统,提出一种有效对抗频率扩展的同步方法。该方法充分利用HFM(Hyperbolic Frequency Modulation,HFM)的相关及多普勒容限特性,构造HFM特殊组合信号,达到快速、精确的时间同步。通过模拟海上信道试验数据分析,该方法相比传统同步方法同步误差小、计算复杂度低、同步速度快。通过DSP及海上实验结果论证方法有效可靠性。In view of the complex underwater acoustic channel in underwater acoustic communication system,the paper proposed a new synchronized method to against extended frequency. The method makes full use of HFM（Hyperbolic Frequency Modulation, HFM） and doppler tolerance characteristics and constructs a special combination of HFM signals, so as to achieve rapid and precise time synchronization. Based on the sea channel data analysis, this method which compared with the traditional synchronization methods has a lower synchronous error and lower computational complexity and faster synchronous rate. The experimental results based on DSPs demonstrate the reliability and effectiveness.

关 键 词：水声通信 HFM 同步方法 水下信道 

分 类 号：TN911.8[电子电信—通信与信息系统]