高动态扩频信号的载波跟踪技术研究  

Study of Carrier Tracking for High-Dynamic Spread Spectrum Signals

作　　者：程乃平[1] 任宇飞[1] 吕金飞[1] 

机构地区：[1]装备指挥技术学院测量控制系,北京101416

出　　处：《电子学报》2003年第z1期2147-2150,共4页Acta Electronica Sinica

摘　　要：针对高动态环境下扩频信号的载波捕获与跟踪问题 ,本文分析了多普勒频移对锁相环、锁频环以及环路滤波器设计的影响 ,以及高动态环境中载波快速捕获问题 ,在此基础上提出了一种数字复合软环的设计方法 。For the question of carrier acquisition and tracking of high-dynamic spread spectrum signals,the analysis is presented for the influence of Doppler frequency shifts to the design of PLL(Phase-Locked-Loops),FLL (Frequency-Locked-Loops),and loop filters.Also,the question of fast carrier acquisition for high-dynamic spread spectrum signals is analyzed.The new design method of digital complex soft loops is proposed,and the simulation results show that the question of fast carrier acquisition and tracking is solved by this digital complex soft loops.

关 键 词：扩频通信 载波跟踪 高动态 

分 类 号：TN914.43[电子电信—通信与信息系统]