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

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

Mar 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005jass...22...47k&link_type=abstract

Journal of Astronomy and Space Sciences. Vol. 22, no. 1, 47-58

Astronomy and Astrophysics

Astronomy

1

Ultra-Light, Field Of View, Analog Sun Sensor, Micro/Nano Satellite

Scientific paper

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.

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