Bradford Fine Sun Sensor (FSS)
Bradford Space
High-accuracy fine sun sensor with ±0.3° accuracy (3σ), 128×128° FOV, 375 g, >100 kRad TID tolerance for demanding missions.
Typed specifications25 values
Discloses 6 of 8 fields engineers filter by in this category (category median 4).
- Accuracy
- 0.3 ° EOL Bias error, whole 128° x 128° FOV · datasheet p.2 0.05 ° Noise equivalent angle | 0.03 ° Resolution | 0.3 ° max · EOL bias error (3 σ) in whole 128° x 128° FOV, after ground c…
- Mass
- 375 g nom. · approximately, per sensor unit · datasheet p.2 375 g per sensor unit
- Envelope (L×W×H)
- <108 x 108 x 52.5 mm, including all protrusions by mounting feet, connectors, alignment cube and bondpin, exclusive dowel pins. Floor space: 104 x 94 mm datasheet p.2
- Output type
- analog analogue voltages 0-5V per quadrant, multiplexed · datasheet p.2 analog quadrant outputs, sun presence output
- Field of view
- 128 ° nominal FOV 128° x 128° (COTS sensor version) · datasheet p.2 128 ° Nominal FOV, COTS sensor version | 138 ° Unobstructed FOV | 138 ° unobstructed FOV 138° x 138° (free of straylight sources)
- Supply voltage
- 15 V nom. · ±15 V secondary power · datasheet p.2
- Power consumption
- 0.25 W max · < 0.25 W from ±15 V secondary power · datasheet p.2 0.25 W max · from ±15 V secondary power
- Operating temperature
- -50–85 °C qualification · datasheet p.2
- Radiation tolerance (TID)
- 10 krad active element accumulated dose, with shielding (>3 mm of cov… · datasheet p.2 100 krad EEE parts rad tolerance, with shielding (>7.5 mm aluminium) | 100 krad min · EEE parts rad tolerance larger than 100 kRad, shielding > 7.5…
- Design lifetime
- 5 years Reliability for 5 years in orbit for a single unit · datasheet p.2
- Sensor class
- fine datasheet p.1
- Axes
- 2 two-axis measurement of solar aspect angles · datasheet p.1
- Sensing element
- quadrant photodiode quadrant detector · datasheet p.1
- Resolution
- 0.03 ° max · better than · datasheet p.2
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 supplier12 lines, in the manufacturer's own wording
- FOV
- 128 × 128°
- Accuracy
- ±0.3° (3σ) across mission lifetime
- Resolution
- < 0.03°
- Noise equivalent angle
- < 0.05° (3σ)
- Mass
- 375 g
- Power consumption
- < 0.3 W @ ±15 V
- Data interface
- Analogue voltage
- Reliability figure
- 70 FIT @ 30°C; single unit >0.997 over 5 years
- TID resilience
- > 100 kRad
- SEE resistance
- Insensitive to SEE
- Electrical interface
- 15-pin D-sub connector + dedicated test connector
- Mechanical interface
- 4× M4 mounting holes
About
Bradford’s Fine Sun Sensor (FSS) delivers high pointing accuracy across its entire mission lifetime with ±0.3° (3σ) accuracy and ±0.03° resolution across a 128×128° FOV. At 375 g with a 15-pin D-sub connector, it tolerates >100 kRad TID and is insensitive to SEE. Analogue voltage data interface, 70 FIT at 30°C giving >0.997 reliability over 5 years in orbit for a single unit. Rich heritage across many demanding missions.
Documentation
Need the full ICD, test reports or a specific revision? Ask the supplier directly.