Communications: radio wave antennas – Antennas – Balanced doublet - centerfed
Patent
1977-05-02
1979-01-23
Wilbur, Maynard R.
Communications: radio wave antennas
Antennas
Balanced doublet - centerfed
244 319, 343 74, 343 16M, G01S 342, F41G 700
Patent
active
041363434
ABSTRACT:
A monopulse radio direction finding and tracking system having the capacity of detecting the presence of multiple radiating sources within the effective beamwidth of the monopulse antenna and causing the monopulse antenna to move toward and align its boresight with one of the multiple sources. Signal processing is provided that implements an algorithm based on the amplitudes and absolute magnitudes of signals from a receiver sum channel, elevation and azimuth difference channels, and elevation and azimuth angular error channels. The algorithm utilizes the differences in the ratio of signals present in these channels when a single radiating source is present and when multiple sources are present. Steering control circuits are provided that bias the azimuth and elevation antenna steering servo system to cause the antenna to align its boresight with one of such multiple sources. The improved monopulse tracking system is applicable to a missile guidance system providing terminal guidance to cause the missile to intercept one of multiple radiating targets. Means are provided to accommodate multiple sources or targets in any orientation with respect to the monopulse antenna azimuthal and elevation planes.
REFERENCES:
patent: 3130402 (1964-04-01), Kuck
patent: 4010467 (1977-03-01), Silvka
Blanning Robert B.
Heffner Roy W.
Berger Richard E.
Chin Gay
Martin Marietta Corporation
Renfro Julian C.
Wilbur Maynard R.
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