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)
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, manufacture...
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.
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.
* AI 자동 식별 결과로 적합하지 않은 문장이 있을 수 있으니, 이용에 유의하시기 바랍니다.
문제 정의
It can be seen that the mass of analog sun sensor is getting heavier as the accuracy increases. This study demonstrates how an ultra-light 1-axis and 2-axes analog sun sensors consisting of 2 detectors can be designed, manufactured and tested for small satellite applications. These sun sensors are developed based on the databases of various sun sensors implemented for small satellites since 1990s (Kim et al.
제안 방법
Figure lla, b show test module attached in rotary stage and test configuration of sun sensor characteristics, respectively. The tests were performed for 1-axis and 2-axes sun sensors possessing 2 detectors to compare the accuracy.
참고문헌 (7)
Chang, H. S., Kim, B. J., Lim, K. S., Sung, D. K., & Choi, S. D. 1996, JA&SS, 13, S173
Kim, S. J., Lee, M. H., & Chang, Y. K. 2004, in Proceedings of KSAS Spring Conference (Seoul: KSAS), p.860
Kim, S. O. 2004, MS Thesis, Hankuk Aviation University
Kim, Y. H. & Chang, Y. K 2003, in Proceedings of RAST (Istanbul: RAST), p.242
Ok, K. H. 1993, MS Thesis, Korea Advanced Institute of Science and Technology
Rhee, S. H., Lee, M. S., Lee, H. W., Lim, K. S., & Choi, S. D. 1996, JA&SS, 13, 254
Wertz, J. R. 1988, Spacecraft Attitude Determination and Control, ed. J. R. Wertz (Boston: Kluwer Academy Pub.), p.155
※ AI-Helper는 부적절한 답변을 할 수 있습니다.