Satellites and subsystems > Attitude > Attitude sensors > Sun sensors > Fine Sun Sensor // FSS-P4
Key highlights
The highly integrated fine sun sensor uses four photodiodes to estimate the sun direction vector with a precision of <1º (1 σ). The module has a built-in microcontroller which enables connectivity to a CSP network via CAN bus and readily integrates the fine sun sensor with an attitude determination and control system.
Key features
- 5 - 32.5V unregulated battery voltage supply input
- Data interface: CAN bus with CSP
- 2-axis sun direction sensor based on quad
photodiode array - Measurements (L, W, H): 40x20x10 mm
- <1º (1 σ) precision
- 55º half-cone FoV
Flight heritage
The system has achieved flight heritage.
Manufacturing
Supplier in-house facilities:
- Maker Lab (for prototypes, tool-making etc.)
- Production Labs
Testing & qualification
Supplier in-house facilities:
- Test Lab
- Cleanrooms for integration, test and checkout of complete satellites and flight hardware in general
- Climate chamber, vacuum, and shaker for environmental tests>/li>
Disclaimer: satsearch is not responsible for any mistakes on this page, although we do our best to ensure correctness. Please report any mistakes to us.
Last updated: 2026-01-08
Technical specs
length
40 mm
width
20 mm
height
10 mm
field of view
55 deg (half-cone)
field of view precision
1 deg (1σ)
input voltage
5 to 28 V (unregulated)
data interface
CAN bus with CSP2.0
Export
