Wei Minsong, Xing Fei, You Zheng
Opt Express. 2013 Dec 30;21(26):32524-33. doi: 10.1364/OE.21.032524.
Stringent attitude determination accuracy through a high bandwidth is required for the development of the advanced space technologies, such as earth observation and laser communication. In this work, we presented a novel proposal for a digital sun sensor with high accuracy, large Field of View (FOV) and ultra-high data update rate. The Electronic Rolling Shutter (ERS) imaging mode of an APS CMOS detector was employed and an "amplifier factor" was introduced to improve the data update rate significantly. Based on the idea of the multiplexing detector, a novel mask integrated with two kinds of aperture patterns was also introduced to implement its distinctive performance of high precision and large FOV. Test results show that the ERS based sun sensor is capable of achieving the data update rate of 1 kHz and precision of 1.1″ (1σ) within a 105° × 105° FOV. The digital sun sensor can play an important role in precise attitude determination and provide a broader application for high accuracy satellites.
先进空间技术（如地球观测和激光通信）的发展需要通过高带宽来实现严格的姿态确定精度。在这项工作中，我们提出了一种新颖的数字太阳传感器方案，该传感器具有高精度、大视场（FOV）和超高数据更新率。采用了APS CMOS探测器的电子卷帘快门（ERS）成像模式，并引入了“放大因子”以显著提高数据更新率。基于复用探测器的理念，还引入了一种集成两种孔径图案的新型掩膜，以实现其高精度和大视场的独特性能。测试结果表明，基于ERS的太阳传感器能够在105°×105°视场内实现1 kHz的数据更新率和1.1″（1σ）的精度。这种数字太阳传感器在精确姿态确定中可发挥重要作用，并为高精度卫星提供更广泛的应用。
