G - Physics – 01 – S
Patent
G - Physics
01
S
343/49
G01S 13/42 (2006.01) G01S 13/66 (2006.01) G01S 13/87 (2006.01)
Patent
CA 1243758
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.
460406
Andrews La Vern A.
Moraitis Dennis
Hughes Aircraft Company
Sim & Mcburney
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