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Time-domain analysis of cross correlation for time delay estimation with an autocorrelated signal

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2 Author(s)
Kumar, A. ; Connecticut Univ., Storrs, CT, USA ; Bar-Shalom, Y.

The estimation accuracy of the time difference of arrival (TDOA) of an exponentially autocorrelated signal at two sensors in white noise is analyzed. The estimate is obtained by cross correlating samples taken as short-term integrals of the noisy signals from the two sensors. This technique avoids ambiguities in the cross correlation, and it is shown that the best sampling rate is double the Nyquist rate, for which the Cramer-Rao lower bound (CRLB) is met in practice

Published in:

Signal Processing, IEEE Transactions on  (Volume:41 ,  Issue: 4 )

Date of Publication:

Apr 1993

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