摘要
针对高速运动的TDMA卫星通信站可能引起较大的定时误差进而造成干扰的问题,提出一种开环网络同步方法,其对运动情况下卫通站至卫星径向距离的变化规律以及参考突发的接收参数建模,并利用Kalman滤波平滑和预测状态参数,从而在减小处理时延及信令开销的情况下实现精确突发定时。最后,通过仿真验证了其有效性及性能。
The TDMA satellite communication station in high-speed movement may bring additional timing error that may lead to interference. Aiming at this problem, an open-loop synchronization method is proposed. In this method, the modeling is done for the radial distance variation from mobile satellite communication station to satellite and the receiving parameters of reference bursts, and by using Kalman filtering smooth and predict state parameter,the precise burst timing is realized when the processing delay and signaling overhead decrease. Finally ,the validity and performances of this method are verified by a simulation.
出处
《无线电通信技术》
2013年第3期20-23,共4页
Radio Communications Technology
关键词
TDMA卫星通信
机动站
开环同步
TDMA satellite communication
mobile station
open-loop synchronization
