The design, construction and testing of Loran-C from a drifting buoy
MetadataShow full item record
A low-windage, current-following spar buoy system containing an automatic Loran-C navigation receiver and a single sideband transmitter with associated control circuitry is described. The Loran-C unit acquires and tracks Loran-C signals and, at intervals controlled by an onboard timer, produces a digital message which modulates the transmitter. The transmitter sends this message via a radio telemetry link to a base or ship receiving station where it is decoded. The decoder displays the message contents in the form of Loran-C time differences representing two lines of position, and thus a geographic fix. The system enables the position of the buoy to be tracked as it drifts with the current and thus serves as an instrument in measuring surface and near-surface current transport. A physical description, details of electrical and mechanical design, and test results, are documented in this report. Feasibility of the system was proven, and a pre-prototype system built and tested.
Suggested CitationTechnical Report: Collins, Clayton W., Walden, Robert G., "The design, construction and testing of Loran-C from a drifting buoy", 1980-12, DOI:10.1575/1912/9608, https://hdl.handle.net/1912/9608
Showing items related by title, author, creator and subject.
Marine microbial intact polar diacylglycerolipids and their application in the study of nutrient stress and bacterial production Popendorf, Kimberly J. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 2013-02)Intact polar diacylglycerolipids (IP-DAGs) were used to study microbial dynamics in the surface ocean. IP-DAGs from surface ocean seawater were quantified using high performance liquid chromatography-mass spectrometry ...
Advances in integrating autonomy with acoustic communications for intelligent networks of marine robots Schneider, Toby Edwin (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 2013-02)Autonomous marine vehicles are increasingly used in clusters for an array of oceanographic tasks. The effectiveness of this collaboration is often limited by communications: throughput, latency, and ease of reconfiguration. ...
McGary, R Shane (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 2013-02)In this thesis we present results from inversion of data using dense arrays of collocated seismic and magnetotelluric stations located in the Cascadia subduction zone region of central Washington. In the migrated seismic ...