Application of the Global Positioning System to Nearshore Hydrographic Surveys.
Abstract
Translocation of the Global Positioning System has proved to be a highly accurate method of position determination for onshore and airborne navigation but it had not been previously evaluated for nearshore hydrographic surveys. The technique of translocation for hydrographic operations involves the simultaneous reception of signals from the GPS satellites by two independent receivers; one receiver onboard the survey vessel and one located at the known stationary position. A position correction is obtained at the stationary receiver, which is then applied to the shipboard receiver online or during postprocessing. An accuracy determination of translocated GPS was conducted at the Naval Postgraduate School, Monterey, CA, May, 1981. Two methods of positioning were used for comparison with GPS: (1) a least squares solution of three lines of position observedc from three Wild T-2 theodolites; and (2) a position determined from ARTEMIS, a range-azimuth short range microwave positioning system. Translocated GPS accuracies of 10 meters were determined. It is anticipated that greater accuracies will be obtained by using a more sophisticated receiver and more advanced processing methods. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 01, 1981
- Accession Number
- ADA111511
Entities
People
- Donald Dane Winter
- Virginia Elisabeth Newell
Organizations
- Naval Postgraduate School