Authors:
Raúl de Celis
and
Luis Cadarso
Affiliation:
European Institute for Aviation Training and Accreditation (EIATA) and Rey Juan Carlos University, Spain
Keyword(s):
IMU, GNSS, Attitude Determination , Sensor Model, Projectile, Terminal Guidance.
Related
Ontology
Subjects/Areas/Topics:
Engineering Applications
;
Informatics in Control, Automation and Robotics
;
Intelligent Control Systems and Optimization
;
Robotics and Automation
;
Sensors Fusion
;
Signal Processing, Sensors, Systems Modeling and Control
;
Vehicle Control Applications
Abstract:
Precision on Navigation, Guidance and Control of aircraft is dependent on the precision of the measurement
system both for position and attitude. It is well known in aerospace engineering that the rotation of an aircraft
or space vehicle can be determined measuring two vectors in two different reference systems. Velocity vector
in an aerospace vehicle can be determined in an inertial reference frame directly from a GNSS-based sensor.
Also this velocity vector can be determined by integrating the acceleration measurements in an aircraft body
fixed reference frame. By estimating gravity vector in an inertial reference frame, which currently is perfectly
tabulated, and in a body reference frame, and combining these measurements with the velocity vector, rotation
of the body can be determined. Application of these concepts is especially interesting in order to substitute
high-precision attitude determination devices, which are usually expensive as they are forced to bear high
so
licitations as for instance G forces.
(More)