Investigation of a roll stabilized analytic platform /RSAP/ type inertial navigation system
Abstract
The paper describes the so-called roll stabilized analytic platform type inertial navigation system, in which the sensors (three rate integrating gyros and three accelerometers) are mounted on a table that is electromechanically stabilized about the roll axis and for which the coordinate orientation with respect to the inertial frame is established analytically. The system preserves the advantages of a strapdown system in addition to isolating the sensors from the roll motions of the vehicle, which results in a great reduction in sensor errors. Simple coordinate transformation algorithms - two Euler angle algorithms and the DCM algorithms - are proposed for platform stabilization. A new non-iterative orthogonalization technique based on the DCM algorithm is proposed for analytical coordinate orientation and the performance of the inertial system studied here is compared with the performance of a strapdown system by simulating both systems and comparing their typical motions.
- Publication:
-
11th International Symposium on Space Technology and Science
- Pub Date:
- 1975
- Bibcode:
- 1975spte.symp..721V
- Keywords:
-
- Electromechanics;
- Inertial Navigation;
- Inertial Platforms;
- Lateral Stability;
- Stabilized Platforms;
- Algorithms;
- Coordinate Transformations;
- Digital Simulation;
- Flow Charts;
- Gyrostabilizers;
- Orthogonal Functions;
- Stability Derivatives;
- Strapdown Inertial Guidance;
- Space Communications, Spacecraft Communications, Command and Tracking