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AssigneeRaytheon Company
InventorsBenjamin L. Young, Rosario Mangiapane, Jerome H. Pozgay
Estimating the term…
An AWTSS is shown to be made up of an improved synthetic aperture radar (SAR) for generating radar maps with various degrees or resolution required for navigation of an aircraft and detection of ground targets in the presence of electronic countermeasures and clutter. The SAR consists, in effect, of four frequency-agile radars sharing quadrants of a single array antenna mounted within a radome on a "four axis" gimbal with a sidelobe cancelling subarray mounted at the phase center of each quadrant. Motion sensors are also mounted on the single array antenna to provide signals for compensating for vibration and stored compensating signals are used to compensate for radome-induced errors. In addition, a single processor is shown which is selectively operable to generate radar maps of any one of a number of desired degrees of resolution, such processor being adapted to operate in the presence of clutter or jamming signals.
In a monopulse radar system utilizing a four quadrant phased array antenna and a multi-channel radio frequency receiver having a separate channel fed by signals from each antenna quadrant and an auxiliary channel, a sidelobe canceller for nulling jamming signals received in the sidelobes of the four quadrant phased array antenna, such sidelobe canceller comprising:
Dependencies are inferred from the claim text.