Space Inventor Star Tracker
State of the art report 2023
1U and larger satellites

STR-P4

Star Tracker unit for mini- and microsatellites.

The star tracker is based on advanced star-tracking algorithms developed by Space Inventor. The embedded computer processing unit is built on highly reliable COTS components. The compact rad-hard camera’s optics collect enough signal to track across the entire celestial vault with full performance up to 0.3º/s. 
 

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GNC

MSRP

€85.000

Specifications

Description

High precision star tracker unit for mini and microsatellites.

The star tracker is based on advanced star tracking algorithms developed by Space Inventor. The embedded computer processing unit is built on highly reliable COTS components. The compact rad-hard camera’s optics collect enough signal to track across the entire celestial vault with full performance up to 0.3º/s.

The standard baffle provides an impressive Sun exclusion half-angle of 30º. The optical head is based on a CMOS Active Pixel Sensor with global shutter read-out, which presents itself as ideal for star tracking purposes. With a design based on very few components, this star tracker provides a supreme combination of high reliability and low recurrent cost.

The integrated processing unit accommodates the star catalogue and the software algorithms providing autonomous attitude determination, both during initial acquisition (lost-in-space) and continuous tracking.
 

Features

Accuracy (1 sigma)
Pitch/yaw:
< 1.5 arcsec
Roll
< 10 arcsec
Timing Max Update rate
5 Hz
Slew-rate
Up to 0.3º/s (full performance)
Slew-rate
Up to 1.5º/sec (reduced performance)
Sun exclusion angle
30º (half cone)
Mass
300 g
Interface
CAN or RS422
Connector
High reliability Harwin M80
Power consumption
2W
Supply voltage
5V regulated or 7-28V unregulated
Radiation total dose tested COTS parts
Vibration rated for all launch vehicles
5 years design lifetime

Mechanical drawing

Space Inventor Star Tracker Blueprint

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