一种高动态终端通信中的频率跟踪算法  

A Frequency Tracking Algorithm in High Dynamic Terminal Communication

作　　者：陈昊 赵斐[1] CHEN Hao;ZHAO Fei(Beijing Institute of Tracking and Communication Technology,Beijing 100094,China)

机构地区：[1]北京跟踪与通信技术研究所,北京100094

出　　处：《无线电工程》2020年第9期717-722,共6页Radio Engineering

基　　金：国家自然科学基金资助项目(91438206)。

摘　　要：根据高动态飞行器平台终端的特点,研究了高动态飞行器平台终端通信中的时频同步技术,将高动态场景下的残余频偏问题转化为时变信道的快速均衡,提出了一种高动态飞行器平台终端通信中残余频偏精确跟踪算法。该算法通过对信道均衡方案的改进,可做到1 Hz级的准确跟踪。仿真试验验证了利用提出的算法能够准确地估计高动态飞行器平台终端通信中的残余频偏,满足终端解调的要求。According to the characteristics of high dynamic aircraft platform terminal,the problem of time-frequency synchronization in high dynamic aircraft platform terminal communication is studied,and a residual frequency offset tracking algorithm in high dynamic aircraft platform terminal communication by transforming problem of residual frequency offset in high dynamic conditions into fast equalization of variable channel is proposed.This algorithm can achieve 1 Hz accurate tracking by improving the channel equalization scheme.Finally,the simulation test verifies that the proposed algorithm can accurately estimate the residual frequency offset in terminal communication of high dynamic aircraft platform,which can meet requirement of time-frequency synchronization.

关 键 词：高动态飞行器 终端 残余频偏 精确跟踪 

分 类 号：TN911[电子电信—通信与信息系统]