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What Is Omega  
User currently offlinenovice From United Kingdom, joined Aug 2012, 90 posts, RR: 0
Posted (2 years 4 months 3 weeks 7 hours ago) and read 2627 times:

"Omega is a long-range global navigation system that uses ground-based beacons and operates in the very low frequency (VLF, 3 to 30 kHz) band using surface-wave propagation"
Can anyone explain what surface-wave propagation is as trusty is of no avail

2 replies: All unread, jump to last
 
User currently offlinetdscanuck From Canada, joined Jan 2006, 12709 posts, RR: 80
Reply 1, posted (2 years 4 months 3 weeks 6 hours ago) and read 2595 times:

Quoting novice (Thread starter):
Can anyone explain what surface-wave propagation is

Everything you could ever care to know about Omega:
http://www.jproc.ca/hyperbolic/omega.html

With respect to surface-wave propagation, Omega works because, at its frequencies, the radio waves "see" the space between the earth surface and the ionosphere as a waveguide and propagate with very little loss or distortion over very large distances. Basically, Omega was tuned to use match the radio-transmission characteristics of the atmosphere so the waves would be contained between the surface and the ionosphere and propagate following the curvature of the earth.

Tom.


User currently offlinenovice From United Kingdom, joined Aug 2012, 90 posts, RR: 0
Reply 2, posted (2 years 4 months 3 weeks 4 hours ago) and read 2518 times:

Thanks Tom for that explaination

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