Attitude Determination System

ATIITUDE DETERMINATION SYSTEM COMPONENTS:  

Control and syncronization unit (CSU), pcs.
Star tracker (ST), pcs.
1 or 2
2 to 4

ONBOARD UNIT PLACEMENT REQUIREMENTS

  • Star trackers shoud be mounted on a thermally-stabilized common framework.
  • ST to CSU maximal cable length - 3 meters.
  • The Sun should be off the FOV of minimum two STs in any operation mode orientation.

Specifications

Number of star trackers 3
Number of control and syncronization units 2
3-axis attitude determination error, arcsec 1
Data lag, ms, max 100
Angular speed measurement error, arcsec 1
Minimal angular distance between Sun and star tracker LOS, º 30