Abstract
An acoustic position measurement system is based on a time-of-flight (ToF) measurement of an acoustic tone burst. In indoor situations, the accuracy of the
measurement is often affected by echoes generated by nearby objects around the measurement set-up. The problem how to model these echoes is addressed in the paper. Such a model is useful for the development of ToF measurement methods that can deal effectively with the echoes. The proposed model is a zero mean, non-stationary stochastic process statistically defined by its autocovariance function. We are able to specify this function by means of a few parameters. Experiments performed validate the proposed model. We show that the proposed autocovariance function and the one deduced from experimental data can approximately be brought in accordance.
measurement is often affected by echoes generated by nearby objects around the measurement set-up. The problem how to model these echoes is addressed in the paper. Such a model is useful for the development of ToF measurement methods that can deal effectively with the echoes. The proposed model is a zero mean, non-stationary stochastic process statistically defined by its autocovariance function. We are able to specify this function by means of a few parameters. Experiments performed validate the proposed model. We show that the proposed autocovariance function and the one deduced from experimental data can approximately be brought in accordance.
Original language | English |
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Title of host publication | XVII IMEKO World Congress : Metrology in the 3rd millennium |
Subtitle of host publication | Book of summaries: June 22-27, 2003 Dubrovnik, Croatia |
Editors | Damir Ilić, Mladen Boršić, Josip Butorac |
Place of Publication | Dubrovnik, Croatia |
Publisher | Croatian Metrology Society |
Number of pages | 6 |
ISBN (Print) | 953-7124-00-2 |
Publication status | Published - 22 Jun 2003 |
Event | XVII IMEKO World Congress 2003: Metrology in the 3rd Millennium - Dubrovnik, Croatia Duration: 22 Jun 2003 → 27 Jun 2003 Conference number: 17 |
Conference
Conference | XVII IMEKO World Congress 2003 |
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Country/Territory | Croatia |
City | Dubrovnik |
Period | 22/06/03 → 27/06/03 |
Keywords
- Ultrasonic position measurement
- Reflection model
- Time-of-flight