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Patent Searching and Data


Title:
ANTENNA DIRECTIVITY CONTROLLER
Document Type and Number:
Japanese Patent JPH0645819
Kind Code:
A
Abstract:

PURPOSE: To provide sure beam directivity control and to prolong the service life of a satellite by controlling the directional point of an antenna beam by calculating the fluctuating amount of a beam directing point based on the inclination angle of a track surface, eccentricity and up cross-section time.

CONSTITUTION: Concerning an antenna 10, the fluctuation of the beam directing point with the daily movement is calculated by a directivity control means based on the track surface inclination angle, eccentricity and up cross-section time of a triaxial posture control satellute stored in a RAM 15, and the direction of beam directivity is controlled so as to cancel the fluctuation. Thus, the beam directing point of the antenna can be controlled without the south-north track control of the triaxial posture control satellite itself, mounted fuel can be reduced by reducing the frequency of using a thruster for posture control and as a result, the service life of the satellite is prolonged. Further, since very complicated thruster jetting operations are reduced for satellite control, the safety as a satellite system is improved.


Inventors:
OKAMOTO YOSHINORI
Application Number:
JP1992000195169
Publication Date:
February 18, 1994
Filing Date:
July 22, 1992
Export Citation:
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Assignee:
TOSHIBA CORP
International Classes:
B64G1/24; H01Q3/08; H04B7/185; (IPC1-7): H01Q3/08; B64G1/24; H04B7/185
Attorney, Agent or Firm:
鈴江 武彦