Process for identifying an incorrectly measuring sensor in a spa

Details Process for identifying an incorrectly measuring sensor in a spa Process for identifying an incorrectly measuring sensor in a spa

1999-04-19

2000-10-10

Cuchlinski, Jr., William A.

Data processing: vehicles, navigation, and relative location

Vehicle control, guidance, operation, or indication

Vehicle diagnosis or maintenance indication

701 13, 701 4, 244158R, 244171, 244164, 342 62, 35613903, G01M 1700

Patent

active

061310581

ABSTRACT:
In a process for identifying an incorrectly measuring sensor which is part of a sensor arrangement on a spacecraft, external directional vectors are measured, relative to external objects, such as the earth, the sun or selected stars, or to external field vectors, such as the earth's magnetic field. Based on actual time and space coordinates of the spacecraft, respective actual external directional vectors are calculated with respect to an inertial system of coordinates, and the angles between these vectors are determined. These angles are compared with corresponding angles which exist between the directional vectors measured by a function of the sensor arrangement relative to a spacecraft-fixed system of coordinates. Based on this comparison a sensor which may measure incorrectly can be identified reliably.

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patent: 5984238 (1999-11-01), Surauer et al.
patent: 5996941 (1999-12-01), Surauer et al.

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