PAGE CONTENTS
Objectives
The purpose of ASTROgyro is to establish a reliable and performant attitude determination system combining the star tracker’s fundament of absolute and drift-free attitude information based on star pattern recognition with the broad dynamic range and low noise rate spectrum of Coriolis Vibratory Gyroscopes (CVG) in an IRU compound.
System Architecture
Contrasting to the traditional concept, the ASTROgyro system raises the synergies between star trackers and gyroscopes in a simplified manner. Its basic concept is an integrated but flexible system that allows for sensor data fusion without additional processing load for the AOCS computer. The star tracker is able to take full advantage of the high data rate information of the gyroscope e.g. for outage bridging, thus also improving the subsequent entering of the attitude re-acquisition phase. The gyroscope, in return, profits from periodic, star tracker-based recalibration.
The ASTROgyro project is currently in the qualification phase.
The milestones after the Kick-Off are CDR, TRR and Final Review of the qualification results.
Plan
The ASTROgyro project is currently in the qualification phase.
The milestones after the Kick-Off are CDR, TRR and Final Review of the qualification results.
Current Status
An engineering model of the ASTROgyro IRU has successfully been set up and has been calibrated and performance tested. After successful verification of the ASTROgyro Inertial Reference Unit design principles, the qualification model of ASTROgyro IRU is currently being manufactured and put into operation.
