Viewpoints regarding the selection of platform attitude correction and filter in the case of a vertical reference system
Abstract
It is pointed out that the accuracy in the indication of the true vertical obtained in the case of vertical reference platforms for the determination of aircraft orientation is not sufficient for navigational applications depending on the vertical as reference standard. In these cases a measurement accuracy from 2 to 5 arc minutes is desirable. Possibilities for enhancing the measurement accuracy are systematically investigated. The performance of systems in which a filter is used to estimate vertical misalignments of the platform is compared with the merits of a system utilizing a vertical stabilization approach. Questions of filter design and methods for improving the accuracy in the determination of the vertical with the aid of an additional noninertial velocity measurement are also explored.
- Publication:
-
Ortung und Navigation
- Pub Date:
- 1974
- Bibcode:
- 1974OrNav.......29H
- Keywords:
-
- Air Navigation;
- Error Correcting Devices;
- Inertial Platforms;
- Linear Filters;
- Position Errors;
- Reference Systems;
- Aircraft Guidance;
- Attitude Control;
- Instrument Errors;
- Navigation Aids;
- Optimal Control;
- Instrumentation and Photography