HARDWARE / PRODUCTUpdated 24 Jul 2026

TensorFSS-15M Fine Sun Sensor

Tensor Tech
TensorFSS-15M Fine Sun Sensor

The TensorFSS-15M is a 2-axis digital fine sun sensor for satellite attitude determination, offering 0.2-degree accuracy and low power consumption, with an optional embedded tri-axis magnetometer.

Typed specifications5 values

Discloses 2 of 8 fields engineers filter by in this category (category median 4).

Mass
3 g
product page
Envelope (L×W×H)
22 x 15 x 5.3 mm3
product page
Field of view
120 °
product page
Supply voltage
3.3 V
product page
Radiation tolerance (TID)
24 krad
min · product page

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 supplier11 lines, in the manufacturer's own wording
Field of view (FOV)
120 deg
Current (ACTIVE)
17.1 mA operated in continuous mode, 8 Hz
Interface
RS-485
Accuracy, 1-sigma
< 0.2 deg, < 0.1 deg upon request
Radiation tolerance
> 24 krad
Dimensions
22 x 15 x 5.3 mm3
Data rate
4, 8, 16 Hz
Supply voltage
3.3 V
Embedded tri-axis magnetometer range
± 800 uT
Embedded tri-axis magnetometer noise
2.5 nT/√Hz (typical)
Mass
3.0 g

About

The TensorFSS-15M fine sun sensor is a satellite attitude determination system utilizing an advanced photodiode quadrant detector shielded by an aperture mask, ensuring sun incidence measurements up to 0.1-degree accuracy. It features an embedded error correction table, derived from thorough in-house calibration, to deliver top-class performance. The sensor consumes 5.5 mA at 16 Hz and is compliant with GEVS and ECSS testing standards, combining reliability and efficiency. Key features include a 2-axis digital fine sun sensor, 0.2 deg (1-sigma) sun determination accuracy (or < 0.1 deg upon request), lower power consumption, a robust and autonomous recovery mechanism, and an RS485 interface. The TensorFSS-15M also offers configurable magnetometer functionality, which can be enabled or disabled based on mission requirements. When enabled, the magnetometer enhances measurement accuracy and reliability by providing additional magnetic field data to complement sun vector readings. This dual-source sensing improves attitude determination, especially in scenarios with limited sun visibility or environmental uncertainties. For accurate magnetometer performance, the unit should be installed at least 10 cm away from potential magnetic interference sources like Control Moment Gyroscopes (CMGs), motors, or high-current wiring. Enabling the magnetometer transforms the TensorFSS-15M into a more versatile and robust sensor, supporting higher-precision orientation awareness for satellite missions.

Documentation

No public datasheet yet — request the datasheet / ICD from the supplier.

Source: tensortech.co ↗

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