NASA NTRS · 19810012518
Autonomous navigation system
Abstract
An inertial navigation system utilizing a servo-controlled two degree of freedom pendulum to obtain specific force components in the locally level coordinate system is described. The pendulum includes a leveling gyroscope and an azimuth gyroscope supported on a two gimbal system. The specific force components in the locally level coordinate system are converted to components in the geographical coordinate system by means of a single Euler transformation. The standard navigation equations are solved to determine longitudinal and lateral velocities. Finally, vehicle position is determined by a further integration.
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Merhav, S. J.. 1981-01-13. Autonomous navigation system. https://ntrs.nasa.gov/citations/19810012518
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