四象限差动式模拟太阳敏感器设计

Design of Four-Quadrant Analog Sun Sensor

设计了一种面向皮卫星应用的模拟式太阳敏感器。本设计采用四象限硅太阳能电池片来测量太阳的角度信息,视场角为90°,具有精度高(1σ测量误差为0.58°)、体积小(25 mm×25 mm×5 mm)、抗干扰能力强等优点。详细分析了敏感器遮光罩的误差模型和输出电流特性,同时对敏感器做了标定、温度、外场等实验,实验结果表明该敏感器能够很好地满足皮卫星的实际应用要求。

An analog sun sensor is proposed for the pico-satellite. The sensor is based on a four-quadrant silicon photo cell to measure the sun angel,which has high accuracy（ lo＇=0.58） ,small volum（25 ram25 ram5 mm） and anti-interference performance, and the field of view（FOV） is expected to be 90. This paper describes about the error model of the aperture mask and the cell current in detail. In order to measure the actual performance of the sensor, the relevant experiments are executed. The test shows that the design of sun sensor can meet the requirements of the pico-satellite.