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DEVELOPMENT OF ULTRA-LIGHT 2-AXES SUN SENSOR FOR SMALL SATELLITE

Kim, Su-Jeoung    (Space System Research Lab, Hankuk Aviation University, Department of Aerospace and Mechanical Engineering, Hankuk Aviation University   ); Kim, Sun-Ok    (Space System Research Lab, Hankuk Aviation University, Department of Aerospace and Mechanical Engineering, Hankuk Aviation University   ); Moon, Byoung-Young    (Space System Research Lab, Hankuk Aviation University, Department of Aerospace and Mechanical Engineering, Hankuk Aviation University   ); Chang, Young-Keun    (Space System Research Lab, Hankuk Aviation University, Department of Aerospace and Mechanical Engineering, Hankuk Aviation University   ); Oh, Hwa-Suk    (Department of Aerospace and Mechanical Engineering, Hankuk Aviation University  );
  • 초록

    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 ${\pm}60^{\circ}$ FOV (Field of View) and pointing accuracy of ${\pm}2^{\circ}$ . 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.


  • 주제어

    ultra-light .   field of view .   analog sun sensor .   micro/nano satellite.  

  • 참고문헌 (7)

    1. Chang, H. S., Kim, B. J., Lim, K. S., Sung, D. K., & Choi, S. D. 1996, JA&SS, 13, S173 
    2. Kim, S. J., Lee, M. H., & Chang, Y. K. 2004, in Proceedings of KSAS Spring Conference (Seoul: KSAS), p.860 
    3. Kim, S. O. 2004, MS Thesis, Hankuk Aviation University 
    4. Kim, Y. H. & Chang, Y. K 2003, in Proceedings of RAST (Istanbul: RAST), p.242 
    5. Ok, K. H. 1993, MS Thesis, Korea Advanced Institute of Science and Technology 
    6. Rhee, S. H., Lee, M. S., Lee, H. W., Lim, K. S., & Choi, S. D. 1996, JA&SS, 13, 254 
    7. Wertz, J. R. 1988, Spacecraft Attitude Determination and Control, ed. J. R. Wertz (Boston: Kluwer Academy Pub.), p.155 

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