高动态飞行器平台终端通信中的频率精确估计技术研究

doi:10.12263/DZXB.20200064

电子学报 ›› 2021, Vol. 49 ›› Issue (1): 23-28.DOI: 10.12263/DZXB.20200064

高动态飞行器平台终端通信中的频率精确估计技术研究

陈昊¹, 赵斐¹, 童业平²

1. 北京跟踪与通信技术研究所, 北京 100094;
2. 中国电子科技集团第七研究所, 广东广州 510000

收稿日期:2020-01-07 修回日期:2020-05-29 出版日期:2021-01-25
- 作者简介:
- 陈昊男,1982年出生于安徽.北京跟踪与通信技术研究所副研究员,专业为通信与信息系统,发表学术论文20余篇.研究方向为天基信息支援;赵斐男,1974年出生于宁夏.北京跟踪与通信技术研究所副研究员,主任,专业为信号与信息处理,发表学术论文30余篇.研究方向为天基信息支援.

Research on Frequency Accurate Estimation Technology in Terminal Communication of High Dynamic Aircraft Platform

CHEN Hao¹, ZHAO Fei¹, TONG Ye-ping²

1. Beijing Institute of Tracking and Communication Technology, Beijing 100094, China;
2. The Seventh Research Institute of China Electronic Technology, Guangzhou, Guangdong 510000, China

Received:2020-01-07 Revised:2020-05-29 Online:2021-01-25 Published:2021-01-25

摘要/Abstract

摘要： 本文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频率精确估计技术，提出了一种频率精确估计分解算法.首先，基于分段搜索，确定导频帧的大致位置，并估计出频偏的粗略值；其次，通过移频搜索法，确定各数据帧的准确位置，以及更高的频偏估计精度，对数据帧解扩；最后，利用数据帧中的PN字段进一步提高频偏估计精度，并利用频偏方程将各历史数据联立起来构成方程组，得到并跟踪频偏的变化规律.通过仿真试验，验证了利用本文提出的算法，能够准确地估计高动态飞行器平台终端通信中的频偏，满足时频同步的要求.

关键词: 高动态飞行器, 终端, 精确估计, 频偏

Abstract: According to the characteristics of high dynamic aircraft platform terminal, this paper studies the problem of frequency accurate estimation in high dynamic aircraft platform terminal communication, and proposes a decomposition algorithm for frequency estimation accurately. Firstly, the approximate position of pilot frame is determined and approximate value of frequency offset is estimated based on the segmented search. Secondly, the accurate position of each date frame is determined by the frequency offset search method, and the higher frequency offset estimation accuracy is obtained by which data frame is de-expanded. Finally, the PN field in data frame is used to further improve frequency offset estimation accurately, and frequency offset equation and historical data are combined to form a set of equations, by which the change rule of frequency offset is obtained and tracked. It is verified that the algorithm proposed in this paper can accurately estimate the frequency offset in terminal communication of high dynamic aircraft platform, which can meet requirement of time-frequency synchronization.

Key words: high dynamic aircraft, terminal, accurate estimation, frequency offset

中图分类号:

TN912

陈昊, 赵斐, 童业平. 高动态飞行器平台终端通信中的频率精确估计技术研究[J]. 电子学报, 2021, 49(1): 23-28.

CHEN Hao, ZHAO Fei, TONG Ye-ping . Research on Frequency Accurate Estimation Technology in Terminal Communication of High Dynamic Aircraft Platform[J]. Acta Electronica Sinica, 2021, 49(1): 23-28.

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高动态飞行器平台终端通信中的频率精确估计技术研究

Research on Frequency Accurate Estimation Technology in Terminal Communication of High Dynamic Aircraft Platform

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