AA-STR Autonomous Star Tracker
Leonardo SpA (Space Division)
The Leonardo AA-STR (Autonomous Star Tracker Advanced) is a next-generation star tracker using an HAS APS (CMOS Active Pixel Sensor) detector — the first star tracker with CMOS technology to achieve TRL 9. Approximately 2/3 the size, weight, power, and cost of conventional CCD units. Mass is 2.6 kg (including 26-degree baffle and GEO shielding); […]
Typed specifications57 values
Discloses 11 of 12 fields engineers filter by in this category (category median 8).
- Accuracy, cross-boresight
- 8.25 arcsec Bias (Gaussian distribution), pitch/yaw, 3sigma, EOL · datasheet p.4 8.25 arcsec pitch/yaw, 3sigma; EOL; full temperature range; 10Hz updated … | 3.3 arcsec max · Low Frequency Error (FOV error), pitch & yaw, 3sigma, EOL, 10Hz | 6 arcsec max · NEA (random error) @0.1°/sec tracking rate, pitch & yaw, 3sigma | 8.4 arcsec max · NEA (random error) @0.5°/sec tracking rate, pitch & yaw, 3sigma +5
- Mass
- 2 600 g with 26° SEA baffle GEO orbit radiation shielding · datasheet p.2 2 600 g with 26° SEA baffle, GEO orbit radiation shielding
- Accuracy, about boresight (roll)
- 11.1 arcsec Bias (Gaussian distribution), roll, 3sigma, EOL · datasheet p.4 11.1 arcsec roll, 3sigma; EOL; full temperature range; 10Hz updated rate | 68.2 arcsec roll, NEA @ 0.5°/sec tracking rate | 288 arcsec roll, NEA @ 2°/sec tracking rate | 15.6 arcsec max · Low Frequency Error (FOV error), roll, 3sigma, EOL, 10Hz +5
- Envelope (L×W×H)
- 164 x 156 x 348 mm (25 deg SEA baffle) product page 164mm x 156mm x 348mm with 25 deg SEA baffle
- Update rate
- 10 Hz 10Hz, 8Hz, 5Hz, 4Hz · datasheet p.4 8 Hz 10Hz, 8Hz, 5Hz, 4Hz | 5 Hz 10Hz, 8Hz, 5Hz, 4Hz | 4 Hz 10Hz, 8Hz, 5Hz, 4Hz
- Max tracking rate
- 2 °/s max · Tracking rate up to 2°/sec · datasheet p.4
- Sun exclusion angle
- 25 ° 25 deg SEA baffle (size line) · datasheet p.4 26 ° 26° SEA baffle (mass line)
- Field of view
- 20 ° 20 x 20° · datasheet p.4
- Lost-in-space acquisition time
- 9 s max · from Lost in Space, lower than 9 sec. · datasheet p.4
- Supply voltage
- 20–52 V 20V to 52V · datasheet p.4 60–110 V 60V to 110V | 20–52 V
- Power consumption
- 5.6 W 20°C · datasheet p.4 12.6 W 60°C
- Data interface
- MIL-STD-1553 MIL-STD-1553B · datasheet p.4 RS-422 RS 422 | MIL-STD-1553 Telecommand & Telemetry | RS-422 Telecommand & Telemetry
- Operating temperature
- -30–60 °C Operational temperature · datasheet p.4
- Design lifetime
- 18 years in GEO orbit · datasheet p.4
- TRL
- 8 datasheet p.1 9 The AA-STR is a high TRL-9 next generation product | 9
- Configuration
- single unit integrated in a single assembly · datasheet p.1
- Limiting star magnitude
- 5.5 Mv Dynamic range 1.5Mi to 5.5Mi · datasheet p.4
- Survival temperature
- -35–65 °C Storage temperature · datasheet p.4
- Random vibration
- 17.03 g RMS Qualification level, all axis · datasheet p.4 22 g RMS min · Design level Higher than 22g rms
- Flight heritage
- Applications in Bepi Colombo (ESA), Astro-G (JAXA), PRISMA, AlphaBus, SpaceBus 4000 datasheet p.3
- Satellite class
- GEO initially developed for a GEO telecommunication spacecraft · datasheet p.3
- Shock qualification
- 2 000 g datasheet p.4
- Baffle
- integrated SEA baffle · datasheet p.4
- Detector
- CMOS HAS APS (CMOS Active Pixel Sensor) · datasheet p.4
Each value is typed with its unit and measurement condition and cites the datasheet page it was taken from. Nothing is guessed: a field that is absent here has not been published by the manufacturer. machine-extracted ✓ checked by NewSpace Market ✓ manufacturer confirmed by the manufacturer.
As published by the supplier17 lines, in the manufacturer's own wording
- Detector
- HAS APS (CMOS Active Pixel Sensor)
- FOV
- 20 x 20 deg
- Dynamic range
- 1.5-5.5 Mi
- Max stars tracked
- 15
- Tracking rate
- Up to 2 deg/s
- Lis acquisition time
- <9 s
- Update rate
- 10/8/5/4 Hz
- Accuracy (bias, 3-sigma, EOL)
- 8.25 arcsec pitch/yaw; 11.1 arcsec roll
- Nea @ 0.1 deg/s
- <6 arcsec pitch/yaw; <49.4 arcsec roll
- Dimensions
- 164 x 156 x 348 mm (25 deg SEA baffle)
- Mass
- 2.6 kg (incl. baffle, GEO shielding)
- Supply voltage
- 60-110 V or 20-52 V
- Power
- 5.6 W @ 20 deg C; 12.6 W @ 60 deg C
- Interface
- MIL-STD-1553B, RS-422
- SEU tolerance
- Up to 170,000 protons/cm2/s
- Operating temperature
- -30 to +60 deg C
- Design lifetime
- 18 years GEO
About
The Leonardo AA-STR (Autonomous Star Tracker Advanced) is a next-generation star tracker using an HAS APS (CMOS Active Pixel Sensor) detector — the first star tracker with CMOS technology to achieve TRL 9. Approximately 2/3 the size, weight, power, and cost of conventional CCD units. Mass is 2.6 kg (including 26-degree baffle and GEO shielding); power is 5.6W at 20 deg C versus 8.9W for the A-STR. FOV is wider at 20×20 degrees, tracking up to 15 stars. Improved radiation tolerance versus A-STR (170,000 vs 17,000 protons/cm2/s SEU). Same 8.25 arcsec bias accuracy and MIL-STD-1553B/RS-422 interface. Qualified for GEO telecom, Bepi Colombo, ESA GOCE/PRISMA, AlphaBus, SpaceBus 4000 programs.
Documentation
Need the full ICD, test reports or a specific revision? Ask the supplier directly.