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Spacecraft antenna pattern control system

  • US 5,175,556 A
  • Filed: 06/07/1991
  • Issued: 12/29/1992
  • Est. Priority Date: 06/07/1991
  • Status: Expired due to Term
First Claim
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1. A system for controlling a radiation pattern of an antenna array of a plurality of elements, all carried on a spacecraft, to provide and maintain a desired pattern over a preselected area remote from said spacecraft, without physical movement of the array with respect to the spacecraft even if the spacecraft is physically reoriented with respect to the remote area, comprising:

  • means carried on said spacecraft for sensing spacecraft reorientation relative to the preselected area, to provide at least one error signal responsive to any sensed reorientation;

    means for inertialessly reconfigurating the array radiation pattern responsive to a set of directional pointing data; and

    local loop means for providing said directional pointing data so as to minimize the at least one error signal from said sensing means to cause said array radiation pattern to remain substantially fixed on the remote area even if said spacecraft is reoriented.

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