卫星组网系统下的多普勒频移估计与补偿

doi:10.13190/j.jbupt.2019-178

北京邮电大学学报 ›› 2020, Vol. 43 ›› Issue (3): 66-71.doi: 10.13190/j.jbupt.2019-178

卫星组网系统下的多普勒频移估计与补偿

朱军¹, 李秋瑾¹, 李凯², 王华俊³

1. 安徽大学电子信息工程学院, 合肥 230601;
2. 上海科技大学创意与艺术学院, 上海 200135;
3. 中国科学院上海微系统与信息技术研究所, 上海 200135

收稿日期:2019-08-28 出版日期:2020-06-28 发布日期:2020-06-24
作者简介:朱军(1968-),女,副教授,E-mail:junzhu@ahu.edu.cn.
基金资助:
安徽省科技重大专项项目（18030901010）

Doppler Shift Estimation and Compensation under Satellite Networking System

ZHU Jun¹, LI Qiu-jin¹, LI Kai², WANG Hua-jun³

1. School of Electronic Information Engineering, Anhui University, Hefei 230601, China;
2. School of Creativity and Art, Shanghai University of Science and Technology, Shanghai 200135, China;
3. Shanghai Microsystems, Chinese Academy of Sciences Institute of Information Technology, Shanghai 200135, China

Received:2019-08-28 Online:2020-06-28 Published:2020-06-24
Supported by:

摘要/Abstract

摘要： 针对目前卫星移动通信系统中卫星组网能力欠缺等问题，在非地面网络基础上提出了一种基于虚拟卫星小区组网的多普勒频移估计和补偿算法.通过引入集中管理单元，移动终端能快速选择多普勒频移最小的卫星，同时根据传输时延和卫星星历对多普勒频移值进行估计、补偿、更新和再补偿.仿真结果表明，与传统算法相比，该算法有效降低了多普勒频移，提高了卫星通信链路的质量和接入成功率.

关键词: 卫星通信, 非地面网络, 虚拟小区, 多普勒频移, 地理信息

Abstract: Aiming at problems such as lack of satellite networking capabilities in current satellite mobile communication systems, a Doppler frequency shift estimation and compensation algorithm based on virtual satellite cell networking is proposed on the basis of non-terrestrial networks. By introducing a centralized control unit, the user equipment can quickly select the satellite with the smallest Doppler frequency shift, and at the same time, the Doppler shift value is compensated, updated and re-compensated according to the transmission delay and the satellite ephemeris. Simulations show that, compared with the traditional algorithm, this algorithm effectively reduces the Doppler frequency shift, and improves the quality of satellite communication links and access success rate.

Key words: satellite communication, non-territory networking, virtual cell, Doppler frequency shift, geographic information

中图分类号:

TN927.23

朱军, 李秋瑾, 李凯, 王华俊. 卫星组网系统下的多普勒频移估计与补偿[J]. 北京邮电大学学报, 2020, 43(3): 66-71.

ZHU Jun, LI Qiu-jin, LI Kai, WANG Hua-jun. Doppler Shift Estimation and Compensation under Satellite Networking System[J]. Journal of Beijing University of Posts and Telecommunications, 2020, 43(3): 66-71.

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卫星组网系统下的多普勒频移估计与补偿

Doppler Shift Estimation and Compensation under Satellite Networking System

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