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Analog Sun Sensor Array: 4 Quadrant Sensor for Missions Beyond LEO.
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DOI：10.1016/j.ifacol.2026.01.074.png)
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Abstract
En 中文
The Foresail-2 mission demands an enhanced radiation-tolerant sun sensor to withstand the high-radiation environment encountered in its Geostationary Transfer Orbit (GTO). The Analog Sun Sensor Array (ASSA) is developed to fulfill this requirement, providing attitude determination with an accuracy better than 1 degrees. Traditional analog sun sensors, reliant on position-sensitive diodes (PSDs), encounter challenges such as distinguishing Albedo and celestial bodies like the Moon from the Sun, resulting in an in-orbit accuracy limitation of approximately 5 degrees. ASSA utilizes four individual PSDs, each housed in a separate chamber equipped with its own pinhole to expand the field of view, thereby overcoming previous limitations. This design has built in triple hot redundancy. By using a STM32 controller and sufficient shielding the sensor can be used in high radiation environments. Copyright (c) 2025 The Authors. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0/)
Keywords:
Sensor Fusion
Sun Sensor
Radiation Tolerance
Position-Sensitive Diodes
CubeSat