摘要
发射机与接收机的相对运动产生的多普勒现象引起的频率漂移会明显地恶化系统性能,导致误码率的增加。针对此问题,设计了一个载波同步系统,采用数字Costas环载波恢复技术补偿多普勒频移。系统可以有效跟踪大多普勒频移,从而实现可靠通信。
The frequency departure which would greatly damage the quality of communication and the increase of error rate can be caused by doppler shift due to the relative movement between the transmitter and receiver. Aiming at this problem, carrier synchronization system is designed by applying Costas loop to capture and eliminate the doppler shift. Experiment on this system shows that large doppler shift can be effectively tracked,with reliable communication ensured.
出处
《世界科技研究与发展》
CSCD
2011年第5期820-822,共3页
World Sci-Tech R&D
