Height finding radar
Patent 4150378 Issued on April 17, 1979. Estimated Expiration Date: 
March 13, 1998. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
March 13, 1998. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3343165 3636563 InventorAssigneeApplicationNo. 05/885606 filed on 03/13/1978US Classes:342/107, Combined with determining distance and direction342/123, Height finder342/153, With particular antenna or waveguide342/156, Interferometer342/442Having a phase detectorExaminersPrimary: Wilbur, Maynard R.Assistant: Berger, Richard E. Attorney, Agent or FirmInternational ClassesG01S 13/00 (20060101)G01S 13/44 (20060101) G01S 3/48 (20060101) G01S 3/14 (20060101) H01Q 25/00 (20060101) AbstractA height finding arrangement for a range/azimuth surveillance radar using a mechanically rotated planar antenna array. The received outputs from the array are combined with suitable weighting functions to give two sectorial pattern signals whose effective phase centers are respectively above and below the center of the array aperture. The phase difference between these two signals is measured to provide the elevation angle of the target.Field of SearchWith plural antennas | |
