Dictionary:Doublet modulation

ADVERTISEMENT
From SEG Wiki
Revision as of 19:24, 9 February 2017 by Mcbrandt (talk | contribs) (Marked this version for translation)
(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)
Jump to: navigation, search
Other languages:
English • ‎español


A phase-modulation scheme. Used to encode the message broadcast in transit satellite navigation. A phase shift of +60° for 2.5 ms (Figure D-23) is followed by a phase shift of –60° so that there is no net phase shift. A bit consists of two such doublets in opposite sense following each other by 5 ms.