Title

Performance of signal designs for improved data capacity from DGPS radio beacons

Document Type

Conference Proceeding

Date of Original Version

11-22-2004

Abstract

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.

Publication Title

Proceedings of the Annual Meeting - Institute of Navigation

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