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Improvement in the accuracy of estimating the time-of-flight in an ultrasonic ranging system using multiple square-root unscented Kalman filters
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10.1063/1.3488057
/content/aip/journal/rsi/81/10/10.1063/1.3488057
http://aip.metastore.ingenta.com/content/aip/journal/rsi/81/10/10.1063/1.3488057

Figures

Image of FIG. 1.
FIG. 1.

Flowchart of TOF estimation in an ultrasonic ranging system using the multi-SRUKF.

Image of FIG. 2.
FIG. 2.

The ultrasonic distance measurement platform (side view).

Image of FIG. 3.
FIG. 3.

Diagram of the hardware used in an ultrasonic ranging system.

Image of FIG. 4.
FIG. 4.

The TOF estimation principle of the proposed method.

Image of FIG. 5.
FIG. 5.

Actual echo signal from an obstacle board placed 700 mm in front of the ultrasonic transducer and the reconstructed echo envelope.

Image of FIG. 6.
FIG. 6.

Means of TOF error.

Image of FIG. 7.
FIG. 7.

Standard deviations of TOF error.

Image of FIG. 8.
FIG. 8.

Means of MSE.

Image of FIG. 9.
FIG. 9.

Variances of MSE.

Image of FIG. 10.
FIG. 10.

Number of failures of the UKF.

Image of FIG. 11.
FIG. 11.

Number of failures of the multi-UKF.

Tables

Generic image for table
Table I.

Relations between estimation results and the number of SRUKFs.

Generic image for table
Table II.

Experiment results for the simulated ultrasonic echo signals.

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/content/aip/journal/rsi/81/10/10.1063/1.3488057
2010-10-14
2014-04-20
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Improvement in the accuracy of estimating the time-of-flight in an ultrasonic ranging system using multiple square-root unscented Kalman filters
http://aip.metastore.ingenta.com/content/aip/journal/rsi/81/10/10.1063/1.3488057
10.1063/1.3488057
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