[2] H. J. Juranek, R. Sand, J. Schweizer, et al.. Off axis telescopes-the future generation of earth observation telescopes [C]. SPIE, 1998, 3439: 104-115.
[3] G. Moretto, J. R. Kuhn. Off-axis systems for 4-m class telescopes [J]. Appl Opt, 1998, 37(16): 3539-3546.
[4] D. E. Lencioni, C. J. Digenis, W. E. Bicknell, et al.. Design and performance of the EO-1 advanced land imager [C]. SPIE, 1999, 3870: 269-280.
[5] D. Chesters, D. Jenstrom. GATES-A small imaging satellite prototype for GOES-R [C]. SPIE, 1996, 2812: 30-37.
[6] Li Xuyang, Li Yingcai, Ma Zhen, et al.. Optical design of three-mirror-anastigmat with fold mirror for space camera [J]. Chinese J. Lasers, 2009, 36(2): 335-340.
[8] Xue Qingsheng, Huang Yu, Lin Guanyu. Optical system design of wide-angle and high-resolution spaceborne imaging spactrometer [J]. Acta Optica Sinica, 2011, 31(8): 0822001.
[11] K. Seidl, J. Knobbe, H. Grüger. Design of an all-reflective unobscured optical-power zoom objective [J]. Appl Opt, 2009, 48(21): 4097-4107.
[12] T. S. Turner. Vector aberration theory on a spreadsheet analysis of tilted and decentered systems [C]. SPIE,1992, 1752: 184-195.
[14] A. Yabe. Representation of freeform surfaces suitable for optimization [J]. Appl Opt, 2012, 51(15): 3054-3058.