NASA NTRS · 19900004113
Spacecraft attitude determination using the earth's magnetic field
Abstract
A method is presented by which the attitude of a low-Earth orbiting spacecraft may be determined using a vector magnetometer, a digital Sun sensor, and a mathematical model of the Earth's magnetic field. The method is currently being implemented for the Solar Maximum Mission spacecraft (as a backup for the failing star trackers) as a way to determine roll gyro drift.
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Simpson, David G.. 1989-10-01. Spacecraft attitude determination using the earth's magnetic field. https://ntrs.nasa.gov/citations/19900004113
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