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

CHEN Hao; ZHAO Fei; TONG Ye-ping

doi:10.12263/DZXB.20200064

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

更新时间：2025-12-08

- Research on Frequency Accurate Estimation Technology in Terminal Communication of High Dynamic Aircraft Platform
- Acta Electronica Sinica Vol. 49, Issue 1, Pages: 23-28(2021)
- 作者机构：
  
  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
  3. 北京跟踪与通信技术研究所,北京,100094
  4. 中国电子科技集团第七研究所,广东,广州,510000
- 作者简介：
- 基金信息：
- DOI：10.12263/DZXB.20200064
  CLC： TN912
- Published Online：25 January 2021，
  
  Published：2021
- 稿件说明：
移动端阅览
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.
DOI：

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. DOI： 10.12263/DZXB.20200064.

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.

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.

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