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A Heave Compensation Algorithm Based on Low Cost GPS Receivers

Published online by Cambridge University Press:  25 March 2008

Stephen Blake ,
Chris Hill ,
Terry Moore ,
Chris Hide  and
David Park
Stephen Blake
Affiliation:
(IESSG, University of Nottingham)
Chris Hill
Affiliation:
(IESSG, University of Nottingham)
Terry Moore*
Affiliation:
(IESSG, University of Nottingham)
Chris Hide
Affiliation:
(Geospatial Research Centre, New Zealand)
David Park
Affiliation:
(Geospatial Research Centre, New Zealand)
*
(Email: [email protected])
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Abstract

This paper presents a new method of vessel heave compensation based on a new breed of commercially available low cost GPS receivers that can measure and record the carrier phase observable. The technique is based on the extraction of a highly accurate velocity estimate from standalone receivers using time differenced carrier phase observable. Two trials have been undertaken, one using a Spirent GPS signal simulator and another conducted at sea. The simulator trial thoroughly tested the use of commercially available low cost receivers for this method of velocity estimation through their comparison with higher grade receivers and quantified the errors under varying dynamics. The sea trial tested the heave algorithm against other heave sensors and an accurate reference provided by an Applanix POSRS and showed it to be capable of producing a heave output to rival inertial based heave sensors using commercially available low cost GPS receivers.

Keywords

Hydrographic surveyVessel heave compensation
Type
Research Article
Information
The Journal of Navigation , Volume 61 , Issue 2 , April 2008 , pp. 291 - 305
Copyright
Copyright © The Royal Institute of Navigation 2008

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References

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