Data processing: vehicles – navigation – and relative location – Navigation – Employing position determining equipment
Patent
1996-03-08
1998-09-15
Zanelli, Michael
Data processing: vehicles, navigation, and relative location
Navigation
Employing position determining equipment
701221, 701213, G05B 1918, H01Q 300
Patent
active
058094571
ABSTRACT:
An inertial pointing and control system and method for pointing to a designated target with known coordinates from a platform, to provide accurate position, steering, and command information. The system continuously receives GPS signals and corrects Inertial Navigation System (INS) dead reckoning or drift errors. An INS is mounted directly on a pointing instrument rather than in a remote location on the platform for monitoring the terrestrial position and instrument attitude, and for pointing the instrument at designated celestial targets or ground based landmarks. As a result, the pointing instrument and the INS move independently in inertial space from the platform since the INS is decoupled from the platform. Another important characteristic of the present system is that selected INS measurements are combined with predefined coordinate transformation equations and control logic algorithms under computer control in order to generate inertial pointing commands to the pointing instrument. More specifically, the computer calculates the desired instrument angles (Phi, Theta, Psi), which are then compared to the Euler angles measured by the instrument-mounted INS, and forms the pointing command error angles as a result of the compared difference.
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Robbins Fred
Yee Robert
Bon Kathleen Dal
Lupuloff Harry
Mannix John G.
The United States of America as represented by the Administrator
Zanelli Michael
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