Adaptive time delay and Doppler shift estimation for narrowband signals

作     者：Dooley, SR Nandi, AK 

作者机构：Univ Strathclyde Dept Elect & Elect Engn Signal Proc Div Glasgow G1 1XW Lanark Scotland 

出 版 物：《IEE PROCEEDINGS-RADAR SONAR AND NAVIGATION》 (IEE Proc Radar Sonar Navig)

年 卷 期：1999年第146卷第5期

页      面：243-250页

核心收录：

主　　题：adaptive estimation sonar tracking active sonar least mean squares methods computationally inexpensive algorithm Sonar and acoustic radar LMS-type algorithm Doppler shift linear regression problem sonar signal processing convergence narrowband signals target ranging Filtering methods in signal processing high-resolution estimation Doppler shift estimation Interpolation and function approximation (numerical analysis) modulated Lagrange interpolation filter interpolation filtering theory convergence of numerical methods performance analysis target tracking delay estimation time delay estimation 

摘      要：A computationally inexpensive algorithm suitable for fast, high-resolution estimation of time delays and Doppler shifts (which are necessary for target ranging and tracking) between narrowband signals is presented. The algorithm uses a modulated Lagrange interpolation filter and an LMS-type algorithm. The problem of delay and Doppler estimation is reduced to a linear regression problem. Convergence and performance analysis of the method is studied both analytically and through simulation. It is demonstrated that the method provides more (or as) efficient estimates than modulated sine interpolation or the corresponding unmodulated algorithms for a variety of conditions.