Horizon sensor for satellites using superconductor(s) having a h

Details Horizon sensor for satellites using superconductor(s) having a h Horizon sensor for satellites using superconductor(s) having a h

1990-11-21

1992-08-25

Hannaher, Constantine

Radiant energy

Invisible radiant energy responsive electric signalling

Superconducting type

244 316, 244171, 250342, 505848, 505849, B64G 136

Patent

active

051421500

ABSTRACT:
A horizon sensor for spaced-based satellites consisting of a high critical temperature superconductor which changes temperature based upon its exposure to space-based radiation. The horizon sensor may be flexibly positioned along the outer surface of the space- based satellite. As the orientation in space of the satellite varies, certain portions of the satellite body will be alternately exposed to radiation while other portions of the satellite body will be shadowed from it. As the sensor is exposed to radiation due to the change in orientation of the satellite body, the temperature of the superconductor changes due to radiation absorption. This change in temperature causes the conductivity of the superconductor within the sensor to vary, and this causes a change in voltage within the sensor. This voltage may be appropriately processed via land based or satellite based control systems to accurately measure and/or change the orientation of the satellite in space.

REFERENCES:
patent: 4464065 (1984-08-01), Wolf et al.
R. H. Anderson, "14-16 micron Horizon Sensors for Spinning Satellites" Conference: Proceedings of the SPIE 14 Annual Technical Symposium: Photo-Optical Instrumentation Applications and Theory, San Francisco, Calif., USA (Aug. 11-14, 1969) pp. 85-91.
Norman M. Hatcher, "A Survey of Attitude Sensors for Spacecraft" National Aeronautics and Space Administration NASA SP-145 (1967).
Talvacchio, J. et al., "Photodetection with High-T.sub.c Superconducting Films", pp. 449-458 in Science and Technology in Thin Film Superconductors, McConnell Robert D. and Wolf, Stuart D., eds. (1989) (Proceedings of the Conference on Science and Technology of Thin Film Superconductors, held Nov. 14-18, 1988, Colorado Springs, Co.).
Index from IEEE Transactions on Magnetics, vol. 25 (2) (Mar. 1989).
Young, B. A. "Phonon-Mediated Detection of X-Rays in Silicon Crystals Using Superconducting Transition Edge Phonon Sensors", IEEE Transactions on Magnetics, pp. 1347-1350, vol. 25 (2) (Mar. 1989).
Forrester, M. G., "Optical Response Of Epitaxial And Granular Films Of YBa.sub.2 Cu.sub.3 O.sub.7-.delta. At Temperatures From 25.degree. K to 100.degree. K", IEEE Transactions on Magnetics, pp. 1327-1330, vol. 25 (2) (Mar. 1989).
Sauvageau, J. E., "Superconducting Kinetic Inductance Bolometer", IEEE Transactions on Magnetics, pp. 1331-1334, vol. 25 (2) (Mar. 1989).
Richards, P. L., "The High T.sub.c Superconducting Bolometer", IEEE Transactions on Magnetics, pp. 1335-1338, vol. 25 (2) (Mar. 1989).

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