| Kalman滤波在频率估计中的应用与仿真 |
| |
| 引用本文： | 王鹏宇,吕善伟.Kalman滤波在频率估计中的应用与仿真[J].宇航计测技术,2008,28(5):23-26,46. |
| |
| 作者姓名： | 王鹏宇 吕善伟 |
| |
| 作者单位： | 北京航空航天大学,北京,100083 |
| |
| 摘 要： | 推导并建立了Kalman滤波器用于频偏估计的仿真模型,提出先对信号倍频,而后进行差积运算,得出载有频偏二倍频信息的复信号,再用Kalman滤波器估计复信号的相位和相位变化率,避免符号相位模糊,运算简洁便于数字实现。设计了一个Kalman滤波辅助解调的系统模型,给出了仿真结果。仿真表明,Kalman滤波技术用于频率的快捕可以大大降低失锁概率。
|
| 关 键 词： | 锁相环 Kalman滤波 频率估计 锁频 |
The Application and Simulation of Kalman Filter on Frequency Estimation |
| |
| WANG Peng-yu,LV Shan-wei.The Application and Simulation of Kalman Filter on Frequency Estimation[J].Journal of Astronautic Metrology and Measurement,2008,28(5):23-26,46. |
| |
| Authors: | WANG Peng-yu LV Shan-wei |
| |
| Institution: | (Beijing University of Aerospace and Astronautics, Beijing 100083 ) |
| |
| Abstract: | A simulation model of frequency-offset estimation by Kalman Filter has been estab- lished.To remove phase ambiguity of BPSK,frequency-doubling is proposed,and Kalman Filter has been used to estimate two orthogonal signals output by difference-product frequency detector.The simulation result shows that lose lock probability can be reduced by Kalman Filter. |
| |
| Keywords: | Phase-locked loop Kalman filter Frequcency estimation Frequency-locked loop |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
