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Bathymetric surveying with GPS and heave, pitch, and roll compensation

Journal of Surveying Engineering

By:
, ,
DOI: 10.1061/(ASCE)0733-9453(1998)124:2(73)

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Abstract

Field and laboratory tests of a shipborne hydrographic survey system were conducted. The system consists of two 12-channel GPS receivers (one on-board, one fixed on shore), a digital acoustic fathometer, and a digital heave-pitch-roll (HPR) recorder. Laboratory tests of the HPR recorder and fathometer are documented. Results of field tests of the isolated GPS system and then of the entire suite of instruments are presented. A method for data reduction is developed to account for vertical errors introduced by roll and pitch of the survey vessel, which can be substantial (decimeters). The GPS vertical position data are found to be reliable to 2-3 cm and the fathometer to 5 cm in the laboratory. The field test of the complete system in shallow water (<2 m) indicates absolute vertical accuracy of 10-20 cm. Much of this error is attributed to the fathometer. Careful surveying and equipment setup can minimize systematic error and yield much smaller average errors.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Bathymetric surveying with GPS and heave, pitch, and roll compensation
Series title:
Journal of Surveying Engineering
DOI:
10.1061/(ASCE)0733-9453(1998)124:2(73)
Volume
124
Issue:
2
Year Published:
1998
Language:
English
Publisher:
ASCE
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Journal of Surveying Engineering
First page:
73
Last page:
89
Number of Pages:
17