Transmitter effects and receiver prototyping for improved data capacity from DGPS radiobeacons

Document Type

Conference Proceeding

Date of Original Version



The effects of the DGPS tansmitter/coupler/antenna on the OFDM and PTO modulations are investigated. Greater demands for accuracy coupled with current operations have prompted a reexamination of the DGPS data and signal structure, for improving information rate while minimizing legacy user impact. The DGPS system is a medium frequency (MF) radio system that is used worldwide for broadcast of differential corrections to GPS users. The larger bandwidth required by both modulation methods and the non-constant amplitude of OFDM do not appear to be issues for the transmitter.

Publication Title

Proceedings of the 17th International Technical Meeting of the Satellite Division of the Institute of Navigation, ION GNSS 2004

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