Development of Ultra-Light 2-Axes Sun Sensor for Small Satellite

Journal of Astronomy and Space Sciences

卷:22

Hwa-Suk Oh¹  Su-jeoung Kim²  Byoung-Young Moon²  Sun-ok Kim²  Young-Keun Chang² 

[1] Department of Aerospace and Mechanical Engineering, Hankuk Aviation University, Goyang 412-791, Korea;

[2] Space System Research Lab, Hankuk Aviation University, Goyang 412-791, Korea;

关键词: ultra-light;    field of view;    analog sun sensor;    micro/nano satellite;   

DOI  :  10.5140/JASS.2005.22.1.047

来源: DOAJ

【 摘 要 】

This paper addresses development of the ultra-light analog sun sensors for small satellite applications. The sun sensor is suitable for attitude determination for small satellite because of its small, light, low-cost, and low power consumption characteristics. The sun sensor is designed, manufactured and characteristic-tested with the target requirements of ±60° FOV (Field of View) and pointing accuracy of ±2°. Since the sun sensor has nonlinear characteristics between output measurement voltage and incident angle of sunlight, a higher order calibration equation is required for error correction. The error was calculated by using a polynomial calibration equation that was computed by the least square method obtained from the measured voltages vs. angles characteristics. Finally, the accuracies of 1-axis and 2-axes sun sensors, which consist of 2 detectors, are compared.

【 授权许可】

Unknown