A Survey of Time Delay Estimation Performance Bounds

  title={A Survey of Time Delay Estimation Performance Bounds},
  author={B. M. Sadler and R. J. Kozick},
  journal={Fourth IEEE Workshop on Sensor Array and Multichannel Processing, 2006.},
In this paper we review performance bounds, as well as some current trends, in time delay estimation (TDE). Research over several decades reveals that a few key parameters determine TDE performance. The most basic are the signal-to-noise ratio (SNR), and the signal time-bandwidth (TB) product; larger values for each are desirable. The Cramer-Rao bound (CRB) reveals asymptotic maximum-likelihood estimation (MLE) behavior with respect to TB and SNR. At moderate to lower SNR, TDEs generally break… CONTINUE READING
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