[1] LIU B Q, ZHOU B, WU D SH, et al.. Dual-channel active laser detection system ［J］. Opt. Precision Eng., 2012, 20(2):241-246. (in Chinese)

[2] ZHANG CH, ZHOU B, SHEN X J, et al.. Study of the calculation method for accurately adjusting laser range finder′s three optic axes to parallel to each other ［J］. Opt. Precision Eng., 2002, 10(6): 650-654. (in Chinese)

[3] JIA F X, DING ZH L, YUAN F. Phase-shift laser range finder receiver system ［J］. Opt. Precision Eng., 2009, 17(10): 2377-2384. (in Chinese)

[4] WANG X G, GOU N Y, ZHANG K SH. Unbiased improvement of spectrum analysis phase discrimination for phase-shift laser range finder ［J］. Opt. Precision Eng., 2012, 20(4): 888-895. (in Chinese)

[5] LI Y, DONG X ZH, LIU R G, et al.. The study of high resolution phase detecting method in biological magnetic induction imaging ［J］. Beijing Biomedical Engineering, 2006, 25(4): 351-354. (in Chinese)

[6] LIU Z K, RAO ZH H. FPGA realization of high precise digital phase discrimination technology ［J］. Communications Technology, 2010, 12(43):177-179. (in Chinese)

[7] TANG SH SH. Design of high-resolution A/D converter in seismometer ［D］. Jinan: Shandong University, 2010. (in Chinese)

[8] LIU L H, WU ZH H, WANG D H, et al.. Research and experiment of high-speed comparing circuit with hysteresis ［J］. Electronic Measurement Technology, 2007, 30(2): 46-49. (in Chinese)

[9] YOU ZH. Phase detection using heterodyne interference technology ［J］. Measurement Technology, 1995, 5:2-4. (in Chinese)

[10] LIU ZH Y, SONG H X, XIA ZH Y. Analysis and application of MC4044 digital phase detector ［J］. Radio Communication Technology, 1982, 4: 20-29. (in Chinese)

[11] SUN G F, GU Q T, LIU X B. Principle and implementation of an MC4044-based phase locked loop for constant speed control ［J］. Tsinghua Science and Technology, 2000, 5(4): 409-413.

[12] ZHAO H ZH, ZHAO Y, WANG J, et al.. A wide-range processing method for optical heterodyne interference signal ［J］. Opt. Precision Eng., 1996, 4(4):130-133. (in Chinese)