Accession Number : ADD012562

Title :   Means for Aligning Elevation Beam Pattern Along an Isodop in Synthetic Aperture Mapping Radar.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE AIR FORCE WASHINGTON DC

Personal Author(s) : Kane,Jerry A ; Smith,Winthrop W , Jr

Report Date : 09 Sep 1986

Pagination or Media Count : 14

Abstract : Using an electronically scanned phased array antenna, a technique is developed for aligning a broad elevation beam along an isodop for use in synthetic aperture mapping. A beam steering contoller algorithm for practical implementation of the technique is described. Implementation is realized by means of a beam steering controller and the radar computer. The controller first finds the space stabilized row and column for a given phase shifter. A look-up table furnished by the radar controller provides a slope correction asa function of row. The slope is multiplied by the element column to give the correct linear phase function. This term is then subtracted from the term used to point the beam peak. (Author)

Descriptors :   *PATENTS, *DOPPLER RADAR, *RADAR ANTENNAS, *ELECTRONIC SCANNERS, *SYNTHETIC APERTURE RADAR, *RADAR MAPPING, *BEAM STEERING, PHASED ARRAYS, ANTENNA ARRAYS, PHASE SHIFT CIRCUITS, LINEAR SYSTEMS, PEAK VALUES, PHASE(ELECTRONICS), FUNCTIONS(MATHEMATICS), TABLES(DATA), ALGORITHMS, CONTROL SYSTEMS, AIRCRAFT ANTENNAS, POLARIZATION, COMPUTERS, CORRECTIONS, MAPPING, FUNCTIONS, RADAR, CONTROL, SLOPE, GAIN

Subject Categories : Cartography and Aerial Photography
      Active & Passive Radar Detection & Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE