Satellites and subsystems > Attitude > Attitude sensors > Star trackers > AA-STR
Key highlights
The AA-STR is a medium Field of View (FOV) star tracker integrated in a single assembly with a radiation hardened design. The tracker features robust and accurate three axis attitude determination with very low mass and power consumption for the class of instrument.
The AA-STR is a high TRL-9 next generation product. The AA-STR, while offering similar performance and improved radiation capabilities with respect to CCD based star trackers, incorporates all the advantages of miniaturization and reduced weight, power and cost.
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Last updated: 2019-10-15
Technical specs
lifetime
18 years in GEO orbit
storage temperature
-35 to 65 C
operating temperature
-30 to 60 C
power consumption
12.6W @ 60°C
5.6W @ 20°C
5.6W @ 20°C
power supply
60V to 110V, 20V to 52V
mass
2.6kg with 26° SEA baffle GEO orbit radiation shielding
2.6 kg
2.6 kg
height
348 mm
width
156 mm
length
164 mm
data interface
RS422
MIL-STD-1553B
MIL-STD-1553B
low frequency error (FOV error)
<15.6 arcsec (roll)
<3.3 arcsec( pitch & yaw)
<3.3 arcsec( pitch & yaw)
update rate
10Hz, 8Hz, 5Hz, 4Hz
field of view
20 deg
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