THE USE OF COMPOSITE SIGNALS AT VERY LOW RADIO FREQUENCIES.
When the time of arrival of a VLF transmission is measured at two frequencies the two components can be combined to form a 'composite signal.' This signal, when the transmission is chiefly determined by a single mode of propagation, has advantages in stability and predictability as compare...
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Format: | Text |
Language: | English |
Published: |
1968
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Online Access: | http://www.dtic.mil/docs/citations/AD0666567 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=AD0666567 |
Summary: | When the time of arrival of a VLF transmission is measured at two frequencies the two components can be combined to form a 'composite signal.' This signal, when the transmission is chiefly determined by a single mode of propagation, has advantages in stability and predictability as compared with either one of the carrier-frequency signals or with the difference-frequency signal. (Author) |
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