【作者】 付学瀚； 燕贺云； 朱立东；

【Author】 Fu Xuehan;Yan Heyun;Zhu Lidong;National Key Laboratory of Wireless Communications of UESTC;

【机构】 电子科技大学通信抗干扰全国重点实验室；

【摘要】 高动态在卫星通信、航天测控及导航系统中都普遍存在。高动态环境下,接收信号存在显著的多普勒频偏及多普勒频偏各阶变化率,为传统接收机带来极大挑战。本文从载波捕获和载波跟踪两个方面,对高动态环境下载波同步技术进行了综述。首先,介绍了高动态环境下接收机所面临的挑战,然后详细介绍了现有的载波捕获和载波跟踪技术的特点和基本原理,最后探讨了高动态环境载波同步技术未来的发展方向。更多还原

【Abstract】 High dynamics are common in satellite communication,space TT&C and navigation systems.In the high dynamic environment,the received signal has significant Doppler frequency deviation and Doppler frequency deviation rate of each order,which brings great challenges to the traditional receiver.In this paper,carrier synchronization technology in high dynamic environment is reviewed from two aspects of carrier capture and carrier tracking.Firstly,the challenges faced by receivers in high dynamic environment are introduced,then the characteristics and basic principles of the existing carrier acquisition and carrier tracking technologies are introduced in detail.Finally,the future development direction of carrier synchronization technology in high dynamic environment is discussed.更多还原