Communications: radio wave antennas – Antennas – With means for moving directive antenna for scanning,...
Patent
1978-06-12
1979-11-06
Smith, Alfred E.
Communications: radio wave antennas
Antennas
With means for moving directive antenna for scanning,...
343761, 343118, H01Q 310, H01Q 312, G01S 502
Patent
active
041737628
ABSTRACT:
Apparatus for generating elevation and azimuth reference signals for use in demodulating a tracking error signal to provide elevation and azimuth error components for use in adjusting the position of a tracking conical scan radar antenna, includes a template ring having a notched periphery and being attached to a rotatable nutator of the antenna such that its peripheral notches are in a predetermined angular phase relationship with a reference position on a feed horn attached on the nutator, during rotation of the feed horn with the nutator. The apparatus further includes an optical transducer and electronic circuitry coupled thereto for producing the reference signals from a signal generated by the transducer in response to rotation of the ring with the nutator. As the ring rotates with the nutator, its notched periphery makes or breaks a photon path between light beam generating and sensing elements of the transducer. The sensing element then generates the signal which is received by the electronic circuitry. In addition to the two reference signals produced by the circuitry, a sync signal is generated and used internally within the circuitry to insure that the reference signals produced are in a proper phase relationship to the reference position on the feed horn of the nutator during rotation thereof.
REFERENCES:
patent: 2959060 (1960-11-01), Kune
patent: 3445663 (1969-05-01), Jones et al.
patent: 3519827 (1970-07-01), Chitayat
patent: 3549897 (1970-12-01), Blake
patent: 3697183 (1972-10-01), Knight et al.
patent: 3731104 (1973-05-01), Todd et al.
patent: 3778833 (1973-12-01), Castrovillo et al.
patent: 3849698 (1974-11-01), Frohbach
patent: 4041483 (1977-08-01), Groff
patent: 4090181 (1978-05-01), Ansari et al.
Anderson Wilbert C.
Thompson Vernal W.
Barlow Harry E.
Cleaver William E.
Dority John P.
Smith Alfred E.
Sperry Rand Corporation
LandOfFree
Reference signal generating apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Reference signal generating apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Reference signal generating apparatus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-463795