ESTIMATION OF TIME DIFFERENCE OF ARRIVAL (TDOA) IN MULTIPATH ENVIRONMENTS BASED ON SUB-NYQUIST RATE SAMPLING

摘要

A method is provided for to determining a time difference of arrival (TDOA) between a first signal and a second signal. The method includes sampling a first signal at a sub-Nyquist rate to provide a first sampled signal; sampling a second signal at the sub-Nyquist rate to provide a second sampled signal, the first and second signals representing corresponding multipath channels; cross-correlating the first and second sampled signals; and determining an estimate of the TDOA between the first and second signals based on the sampled first and second signals.

主权项

1. A method for estimating time difference of arrival (TDOA) between first and second multipath signals, where each of the first and second signals represents a multipath channel, the comprising:
sampling the first signal at a sub-Nyquist rate to provide a first sampled signal; sampling the second signal at the sub-Nyquist rate to provide a second sampled signal; cross-correlating the first and second sampled signals; and determining an estimate of the TDOA between the first and second signals based on the cross-correlated first and second sampled signals.