[1] Tang T J,Cao X Q,Lin B. Optical Instruments,2005,27(1):90~91
[2] Dong L L,Xiong J W,Wan Q H. Optics Precision Engineering,2000,8(2) :198~200
[3] Yu Y W. Journal Nanjing Normal University,2003,3(1):34~35
[4] Yuji M,Nobuhiko T,Tomoharu N,et al. Highperformance absolute rotary encoder using multitrack and M-code.. Opt Eng,2003,42 (1) :124~131
[5] Luo C Z,Chen L Y,SuN Y,et al. Acta Photonica Sinica,2003,32(5):629~630
[6] Xu Z,Hu X D,Luo C Z,et al. Acta Photonica Sinica,2002,31(12):1497~1498
[7] Yan W M,Wu W M. Data Structure. Beijing: Tsinghua University Press,1996.79~84