Communications: radio wave antennas – Antennas – Balanced doublet - centerfed
Patent
1976-01-27
1977-07-12
Wilbur, Maynard R.
Communications: radio wave antennas
Antennas
Balanced doublet - centerfed
340189M, 343100CL, G01S 130
Patent
active
040358020
ABSTRACT:
A wind measuring system utilizing a very low frequency (VLF) radio navigation system including an observation station, at least three transmitting stations for sending out the VLF signal, and a sounding device positioned in the atmosphere for receiving the VLF signals from the transmitting stations and retransmitting them by way of a telemetric link to the observation station where processing equipment measures the phases of the signal transmission and determines therefrom the position or velocity directions of the sounding device. The processing equipment includes a receiving circuit for receiving the VLF signal from the sounding device, and limiting circuitry for amplitude limiting the VLF signal. A local signal generator included in the observation station generates a reference signal which has the same frequency as the VLF signal. Polar cross correlation circuitry is also included for forming cross correlation functions of the amplitude limited VLF signals and the reference signal. The phase angles of the cross correlation functions are representative of the location of the sounding device.
REFERENCES:
patent: 3263231 (1966-07-01), Smith et al.
patent: 3599212 (1971-08-01), Bickel
patent: 3680115 (1972-07-01), Bickel
patent: 3715758 (1973-02-01), Sender
patent: 3774211 (1973-11-01), Nard et al.
Jagermalm Ove
Luukkonen Keijo
Berger Richard E.
Wilbur Maynard R.
LandOfFree
Method and apparatus for wind measurement does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and apparatus for wind measurement, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for wind measurement will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-491392