Aeronautics and astronautics – Spacecraft – Attitude control
Patent
1987-12-10
1988-10-11
Barefoot, Galen
Aeronautics and astronautics
Spacecraft
Attitude control
244169, 244170, 244171, 342355, B64G 124
Patent
active
047765402
ABSTRACT:
The invention is a method of orienting a satellite in a geosynchronous orbit so as to direct a beam from an antenna mounted on the satellite to cover a desired target site, and pointing the beam axis at a desired bore site target. One embodiment of the method according to the invention includes a step of orienting the spin axis of a geosynchronous satellite at a direction angle which equals the inclination angle of the current orbital plane plus an adjustment or correction angle (.beta.), when the inclination angle is greater than zero. The correction angle is determined using one or both of the following equations:
REFERENCES:
patent: 3341151 (1967-09-01), Kampinsky
patent: 3836969 (1974-09-01), Bond et al.
patent: 4084772 (1978-04-01), Muhlfelder
patent: 4599619 (1986-07-01), Keigler et al.
"A Control Method of Antenna Pointing Error Due to Orbital Inclination for a Spin-Stabilized Satellite", T. Izumisawa et al., American Institute of Aeronautics & Astonautics, N.Y., 34th Congress of the International Astronautical Federation, Oct. 10-15, 1983, pp. 1-7.
"A Satellite System for Avoiding Serial Sun-Transit Outages and Eclipses", C. W. Lundgren, Bell System Technical Journal, Oct. '70, pp. 1943-1973, Summit, N.J.
"Efficient Spacing of Synchronous Communication Satellites", Harrison E. Rowe, et al., pp. 2379-2433, Bell System Technical Journal, Dec., 1968, Summit, N.J.
Barefoot Galen
Communications Satellite Corporation
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