Communications: directive radio wave systems and devices (e.g. – Determining distance – With pulse modulation
Patent
1983-08-05
1987-03-10
Tubbesing, T. H.
Communications: directive radio wave systems and devices (e.g.,
Determining distance
With pulse modulation
342 81, 342158, 342195, G01S 1342, G01S 1372
Patent
active
046493905
ABSTRACT:
A single two dimension radar system having the capability of developing two dimensional data on all targets in its surveillance volume and three dimensional data for selected targets in its surveillance volume is disclosed. A single phased array antenna having two selectable elevation beam patterns, a wide beam and a narrow beam, is rotated in azimuth. In the two dimension mode, targets are detected and tracked in an azimuth and range position through use of the wide elevation beam. Upon selecting a particular target in track for three dimension data extraction, the radar system changes to the three dimension mode prior to the azimuth position of the selected target, and performs a sequential lobing process of the narrow beam in elevation angle. The power ratios of the target returns in the sequential lobes are analyzed and an elevation position of the selected target is determined. The radar system reverts to the two dimension mode after leaving the azimuth position of the selected target.
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Andrews LaVern A.
Moraitis Dennis
Barron Jr. Gilberto
Hughes Aircraft Company
Karambelas A. W.
Runk T. A.
Tubbesing T. H.
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