Attitude Determination System
СИСТЕМА АСТРООРИЕНТАЦИИ
ATIITUDE DETERMINATION SYSTEM COMPONENTS
Control and syncronization unit (CSU), pcs. 1 or 2
Star tracker (ST), pcs. 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