The propagation of very low frequency radio waves with special reference to the Omega navigation system
Radio waves in the Very Low Frequency (VLF) band (3-30kHz) are reflected from the lowest part of the ionosphere, the D-region. Due to their relative stability and low attenuation they are utilized for navigation, timing and frequency comparisons. Any changes in D-region electron density structure ar...
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University of Leicester
1982
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| Online Access: | http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.278582 |