摘要
论文分析了低轨卫星高动态特性对星地高速数传接收的影响,针对传统高速数传接收机的载波环路对于多普勒二次变化率应力敏感,提出了增加环路带宽和提高环路参数更新速率改进高动态环境下的卫星数传信号载波同步设计的思路方法,实践证明该方法能显著提升高速数传终端在接收低轨卫星信号时的高动态特性适应能力。
The high data-rate satellite-ground receiving influenced by the high dynamic characteristics of LEO satellites is an⁃alyzed in this paper.Aiming at mitigate the sensitivity issue of carrier loop to Doppler's second-order changing rate in traditional car⁃rier loop of high data-rate receiving,a new carrier synchronization method by increasing loop bandwidth and update rate of loop pa⁃rameters is proposed.The practice demonstrates its dramatically better adaptive capacity of high data-rate receiving under the influ⁃ence of high dynamic characteristics of LEO satellites.
作者
方科
刘景元
景新攀
FANG Ke;LIU Jingyuan;JING Xinpan(No.10 Research Institute of China Electronics Technology Group Corporation,Chengdu 610036;No.61096 Troops of PLA,Beijing 100094)
出处
《舰船电子工程》
2021年第3期67-70,共4页
Ship Electronic Engineering
关键词
高速数传
高动态
多普勒
high data-rate receiving
high dynamic
Doppler
