Performance of signal designs for improved data capacity from DGPS radio beacons
Date of Original Version
Service broadcasts GPS correction information on marine radio beacon frequencies to improve the accuracy and integrity of GPS was discussed. The existing system provides differential corrections over a medium frequency carrier using minimum shift keying (MSK) as the modulation method. The two instantaneous frequencies for this modulation method are chosen in such way so as to produce orthogonal signaling with a minimum modulation index. A two-phased plan for a new generation of DGPS capability can be envisioned.
Proceedings of the Annual Meeting - Institute of Navigation
Swaszek, Peter, Richard Hartnett, Keith Gross, Per Enge, and Gregory Johnson. "Performance of signal designs for improved data capacity from DGPS radio beacons." Proceedings of the Annual Meeting - Institute of Navigation , (2004): 698-708. https://digitalcommons.uri.edu/ele_facpubs/1085