The ACSS Rad Hard is a radiation-hardened sun sensor designed for reliable sun tracking and spacecraft attitude determination in demanding space environments.
Measuring the incident angle of sunlight across two orthogonal axes, the sensor provides high sensitivity through an optimized geometrical design. Its robust architecture is engineered to support missions where radiation tolerance and long-term reliability are critical.
Designed for LEO, MEO and GEO missions, the ACSS Rad Hard combines proven sun-sensing technology with enhanced resilience for challenging radiation environments.
Building on ACSS technology with flight heritage since 2019 and hundreds of flight units delivered, the ACSS Rad Hard benefits from an industrialized manufacturing process optimized for consistent quality and high-volume production.
| Industry | Space |
| Comm. Interface | Analog |
| Flight mode | Yes |
| Engineering mode | Yes |
| Field of View (º) | ±60, Custom |
| Power Supply (V) | 15-30V, 3 mA |
| Operating Temperature |
-45 to 85º degrees |
| Radiation test | 200 Krad (gamma) 8e11 10 MeV (protons) |
|
Mechanical test |
Shock 2000 g</br> |
| Endurance Test | 600 cycles from -55 to 105º C 2000h at 125º C |
|
EMC/ESD |
ECSS-E-ST-20-07C
MIL-STD-461F |
