Instrument: Global Positioning System Receiver

Dataset: 
OC473 alongtrack
Instrument: 
Global Positioning System Receiver
Instrument Short Name: GPS
Community Standard Description
(http://vocab.nerc.ac.uk/collection/L05/current/POS03/)
Instrument Description:

The Global Positioning System (GPS) is a U.S. space-based radionavigation system that provides reliable positioning, navigation, and timing services to civilian users on a continuous worldwide basis. The U.S. Air Force develops, maintains, and operates the space and control segments of the NAVSTAR GPS transmitter system. Ships use a variety of receivers (e.g. Trimble and Ashtech) to interpret the GPS signal and determine accurate latitude and longitude.

PI supplied instrument name: Global Positioning System Receiver
Dataset-specific description

The Furuno GP-1850W (primary GPS) and Furuno GP-90D receivers are the navigation devices for the ship. All GPS units are located on the bridge and are operated by the ship’s watch officer. Typical data provided are Time, Position, Velocity, Course-Over-Ground and Speed-Over-Ground. Heading and altitude from Ashtech GPS.