摘要
在数字滤波平方定时的频域算法基础上,采用了前端进行带通滤波和后端实施卡尔曼滤波的处理方法对其进行改进。带通滤波器减小了定时误差估计的方差,而卡尔曼滤波则降低了整个定时误差估计过程中噪声的影响。实验与仿真的结果表明,改进后的方法达到了预期的效果。
Based on the algorithm of digital filter and square timing in frequency domain, it is improved by using handpass filtering on front-end Kalman filtering on hack- end. The bandpass filtering reduce the variance of timing error estimate. The Kalman filtering reduce effect of noise for this process. Simulation and experiment show that achieve expectant effect by using the improved means.
出处
《航空计算技术》
2010年第1期105-107,110,共4页
Aeronautical Computing Technique
基金
国防科技预研资助项目(51323030301)
关键词
带通滤波
卡尔曼滤波
定时误差估计
方差
bandpass filtering
kalman filtering
timing error estimate
variance
