跳扩结合通信系统接收同步算法设计  

Design of receiving synchronization algorithm of FH-SS combined communication system

作　　者：洪伟 孙斌 胡万坤 许菁 HONG Wei;SUN Bin;HU Wan-kun;XU Jing(No.8 Research Academy of CSSC, Nanjing 211153)

机构地区：[1]中国船舶集团有限公司第八研究院,南京211153

出　　处：《雷达与对抗》2020年第3期25-28,56,共5页Radar & ECM

摘　　要：介绍了一种适于FH/DS混合扩频体制接收同步算法。首先利用参考时钟和TOD信息完成跳频初始同步;其次利用频域匹配滤波法和PMF-FFT频率估计法进行伪码相位捕获,并采用开环跟踪结构进行伪码相位跟踪;最后根据伪码相位与跳频图案切换时间间的固有关系,利用伪码相位同步结果辅助完成跳频图案的精确同步。A receiving synchronization algorithm is introduced for the FH/DS hybrid spread spectrum system.Firstly,the reference clock and the TOD information are used to complete the initial synchronization of frequency hopping.Secondly,the frequency-domain matched filtering method and the PMF-FFT frequency estimation method are adopted to capture the pseudo-code phase,and the open-loop tracking structure is used for pseudo-code phase tracking.Finally,according to the inherent relationship between the pseudo-code phase and the switching time of the frequency hopping pattern,the pseudo-code phase synchronization results are used to assist in completing the precise synchronization of the frequency hopping pattern.

关 键 词：扩频 跳扩结合 伪码捕获 频域匹配滤波 FFT 

分 类 号：TN911.22[电子电信—通信与信息系统]