ACOUSTIC TIME-OF-FLIGHT MEASUREMENTS IN A REFLECTIVE ROOM

Ferdinand van der Heijden, Gloria Túquerres, Paul Regtien

Abstract

In this paper the problem how to estimate the time-of-flight of a received acoustic tone burst is addressed. In indoor applications, reflections cause interference patterns that are hardly predictable and can lead to large estimation errors. A generalisation of the well-known matched filter based on a non-stationary autocovariance model of the reflections allows us to develop a new estimator. Experiments show that the application of the new estimator can reduce these errors by about a factor four.

Keywords

Reflection model, time-of-flight, acoustic TOF estimation

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PWC-2003-TC7-030.pdf

DOI

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IMEKO TC

TC7 - Measurement Science

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