Title :
Forward error correction for radiobeacon broadcast of differential GPS data
Author_Institution :
Dept. of Electr. Eng., Worcester Polytech. Inst., MA, USA
fDate :
1/1/1993 12:00:00 AM
Abstract :
Marine radiobeacon networks are being used to broadcast differential Global Positioning System (DGPS) corrections to marine users. The correction data digitally modulate signals from some of the existing marine radiobeacons, which operate in the 285 to 325 kHz band, creating DGPS/radiobeacons. The corrections improve the accuracy of the GPS fix from 100 m to 5-10 m, and provide position fixing service for many marine applications which are too demanding for the normal GPS service. Forward error correction can be used to improve the reliability or range of the DGPS/radiobeacon signal. The improvements made possible by channel coding are analyzed, and a code for DGPS/radiobeacons is recommended
Keywords :
encoding; error correction; marine systems; position measurement; radionavigation; satellite relay systems; 285 to 325 kHz; channel coding; differential GPS data; differential Global Positioning System; forward error correction; marine applications; position fixing; radiobeacon broadcast; reliability; Artificial satellites; Channel coding; Digital modulation; Forward error correction; Global Positioning System; Gravity; Radio broadcasting; Receiving antennas; Road transportation; Satellite broadcasting; Satellite navigation systems; Signal analysis;
Journal_Title :
Aerospace and Electronic Systems, IEEE Transactions on
