Aeronautics and astronautics – Spacecraft
Reexamination Certificate
2007-01-09
2007-01-09
Eldred, J. Woodrow (Department: 3644)
Aeronautics and astronautics
Spacecraft
C244S171700, C250S252100, C250S341500
Reexamination Certificate
active
10654454
ABSTRACT:
A device for verifying the calibration of an infrared sensor includes a body configured to be placed in orbit. The body defines a spin axis and an outer surface. The outer surface has an infrared radiant intensity that is substantially independent of the viewing angle between the spin axis of the body and the infrared sensor. The device may be used for on-orbit verification of the calibration coefficients associated with each pixel of an infrared sensor, including linearity calibration and verification of the resolution capability of the sensor. The calibration coefficients may be verified over the entire sensing capability range of the infrared sensor. After a thermal model of the device is developed, the device operates passively and provides a known source of infrared radiation observable during the device's entire orbital lifetime. The device may be designed to automatically de-orbit from space after a predictable time in orbit.
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patent: 5602389 (1997-02-01), Kato et al.
patent: 5716030 (1998-02-01), LaFiandra et al.
patent: 6027076 (2000-02-01), Krause
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John J. Degnan, “SLR2000 Project: Engineering Overview and Status,” NASA Goddard Space Flight Center, pp. 389-398.
Ferring Russell Shea
Geyer David W.
Nielsen Richard D.
Analex Corporation
Eldred J. Woodrow
Finnegan Henderson Farabow Garrett & Dunner L.L.P.
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