A Zero Crossing Algorithm for Time Delay Estimation

摘要：

　　A new algorithm for time delay estimation (TDE) is proposed,based on zero crossing (ZC).The basic model of zero crossing TDE is discussed,and the mean squared error with additive white Gaussian noise is derived by a theoretic equation.It is shown that the accuracy of TDE is a function of signal-to-noise ratio (SNR),signal frequency and numbers of ZC points.The ZC algorithm approaches a comparable accuracy with FFT method for high SNR,though with low computational complexity and low processing latency.The proposed zero crossing estimator is suitable for real-time applications.

关键词： time delay estimation(TDE) zero crossing(ZC) mean squared error computational complexity

作者: Chao Zhou Chunjie Qiao Shen Zhao Weihua Dai Dongsheng Li

作者单位: Mechatronics and Automation School, National University of Defense Technology, Changsha 410073, China

会议类型: 国际会议

会议名称: 2012 IEEE 11th International Conference on Signal Processing (第11届IEEE信号处理国际会议)

会议地点: 北京

会议语种:英文

页码: 65-69

在线出版日期: 2012-10-21（万方平台首次上网日期，不代表论文的发表时间）