[1] [1] FANG W, WANG Y P, GONG CH H, et al.. Solar irradiance absolute solar irradiance measurement meter and on spacecraft ［J］. Chinese Optics and Applied Optics, 2009, 2 (1): 23-28.(in Chinese)

[2] [2] LEE C, CHOU P, CHIANG C, et al.. Sun tracking systems: a review ［J］. Sensors, 2009, 9: 3875-3890.

[3] [3] CONSCIENCE C, MEFTAH M, CHEVALIER A, et al.. The space instrument SOVAP of the PICARD mission ［J］. SPIE, 2011, 8146: 81463.

[4] [4] YU B X, FANG W, WANG Y P. Radiation exchange and temperature response function of the absolute radiometer with wide field of view mounted for satellites. ［J］. Opt. Precision Eng., 2004, 12(4): 353-358.(in Chinese)

[5] [5] YANG D J, FANG W, YE X, et al.. High precision sun-tracking of solar irradiance monitor for satellites［J］. Opt. Precision Eng., 2014, 22(9): 2483-2490.(in Chinese)

[6] [6] ABDALLAH S, NIJMEH S. Two axes sun tracking system with PLC control［J］. Energ. Convers. Manage, 2004, 45: 1931-1939.

[7] [7] BELAND S, HARDER J, WOODS T. 10 years of degradation trends of the SORCE SIM instrument ［J］. SPIE, 2013, 8862: 88620O.

[8] [8] DOMINGO V, FLECK B. SOHO: the solar and heliospheric observatory ［J］. Space Science Reviews, 1995, 72(1): 81-84.

[9] [9] FANG W, WANG H R. Total solar irradiance monitor for Chinese FY-3A and FY-3B satellites-instrument design［J］. Solar Physics, 2014, 289(12): 4711-4726.

[10] [10] WANG H R. Total solar irradiance monitor for Chinese FY-3A and FY-3B satellites-space experiments and primary data correction［J］.Solar Physics, 2015, 290(2): 645-655.

[11] [11] FANG W, WANG Y P. Effects of ultraviolet irradiation on the cavity of absolute radiometer absorption rate ［J］. Opt. Precision Eng., 2006, 14(5): 775-780.(in Chinese)

[12] [12] YANG ZH L, FANG W, WANG K, et al. Field of view measurement and correction term calculation for small-field radiometer［J］. Opt. Precision Eng., 2013, 21(4): 870-875.(in Chinese)