Decca Night errors

From International Dictionary of Marine Aids to Navigation
Revision as of 01:20, 25 February 2009 by Oferiks (talk | contribs) (1 revision)
(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)
Jump to navigation Jump to search

4-4-170

Night errors (in Decca)

Errors in Decometer readings due to reflected waves from the ionosphere arriving with a different phase from that of the groundwaves from the transmitter.




Please note that this is the term as it stands in the original IALA Dictionary edition (1970-1989)