By Topic

A simple rising-edge detector for time-of-arrival estimation

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

3 Author(s)
MaMullen, W.G. ; Underwater Res. Lab., Simon Fraser Univ., Burnaby, BC, Canada ; Delaughe, B.A. ; Bird, J.S.

A fast and simple technique for acoustic-pulse timing that is particularly suited for use in reverberant, multipath environments has been developed and implemented as part of an underwater acoustic positioning system. The technique analytically fits the rising edge of the pulse using two threshold levels and the corresponding threshold crossing times to give an asymptotically unbiased estimate of the time of flight. The technique yields a significant improvement in timing accuracy over the standard single-level threshold-crossing scheme, yet involves minimal additional electronic complexity. Selection of the two threshold levels, taking into account the expected variation in received signal levels, and the effects of system SNR on timing accuracy have been investigated

Published in:

Instrumentation and Measurement, IEEE Transactions on  (Volume:45 ,  Issue: 4 )