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Loran data modulation: extensions and examples

2007; Institute of Electrical and Electronics Engineers; Volume: 43; Issue: 2 Linguagem: Inglês

10.1109/taes.2007.4285358

2371-9877

Sherman Lo, Benjamin D. Peterson, Per Enge, Peter F. Swaszek,

Radio Wave Propagation Studies

Loran has provided navigation service since 1958. Though not originally designed with data broadcast capabilities, Loran's versatility has enabled data to be broadcast with great benefits. Research in the last two decades has resulted in a tremendous increase in the data capacity of Loran thereby increasing its utility. Currently, a modernized Loran is being evaluated for its capability to backup GPS and data modulation is an integral part of this Loran design. This paper details some recent Loran modulation designs and ideas.