Time-delay estimation of chirp signals in the fractional Fourier domain
IEEE Transactions on Signal Processing
Channel estimation by modulated Lagrange interpolation
Signal Processing
Application of blind source separation to time delay estimation in interference environments
ISNN'05 Proceedings of the Second international conference on Advances in neural networks - Volume Part II
Application of blind source separation to five-element cross array passive location
ISNN'06 Proceedings of the Third international conference on Advances in Neural Networks - Volume Part I
Subsample time delay estimation of chirp signals using FrFT
Signal Processing
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In this paper, we address the problem of online subsample time delay estimation of narrowband signals of known center frequency. We propose a new so-called mixed modulated Lagrange explicit time delay estimation (MMLETDE) algorithm and study its performance through computer simulations. The MMLETDE is a modulated Lagrange ETDE, but the delay estimate adaptation process is based on the truncated sinc fractional delay filter algorithm. We provide theoretical derivations for our proposed estimator, a proof of its convergence performance, learning characteristics of its error performance surface, and an expression for its delay variance. Using simulations, we show that MMLETDE requires only a small filter order and has no noticeable estimation bias over a wide frequency range.