[4] [4] PARRISH C E,JEONG I,NOWAK R D,et al. Empirical comparison of full-waveform lidar algorithms:range extraction and discrimination performance[J]. Photogrammetric Engineering & Remote Sensing, 2011,77(8):825-838.

[5] [5] DUONG V H. Processing and application of ICESat large footprint full waveform laser range data[D]. Delft,Holland:Delft University of Technology, 2010.

[8] [8] HILBERT C,SCHMULLIUS C. Influence of surface topography on ICESat/GLAS forest height estimation and waveform shape[J]. Remote Sensing, 2012,4(8):2210-2235.

[10] [10] ROB R,RAMYA R. Wideband A/D converter front-end design considerations―when to use a double transformer confi-guration[EB/OL]. (2006-07). http://www.analog.com/analogdialogue． http://opticsjournal.net/Articles/abstract?aid=OJ180314000062B9EadJ

[13] [13] GAIED D,HEGAZI E. Charge-pump folded noise cancelation in fractional-N phase-locked loop[J]. IEEE Transactions on Circuits and System II:Express Briefs, 2014,61(6):378-382.

[14] [14] MANIKANDAN R R,A MRUTUR B. A zero charge-pump mismatch current tracking loop for reference spur reduction in PLLs[J]. Microelectronics Journal, 2015,46(6):422-430.

[16] [16] Xilinx Corporation. Advanced ChipSync Applications[EB/OL]. (2006-10)[2007-08-05]. http://www.xilinx.com.

[17] [17] IEEE Standard for Low-Voltage Differential Signals(LVDS) for Scalable Coherent Interface(SCI)[S]. New York,USA: Institute of Electrical and Electronics Engineers, 1996.

[18] [18] Electrical characteristics of Low Voltage Differential Signaling(LVDS) interface circuits. ANSI/TIA/EIA-644[S]. New York, USA:Telecommunications Industry Association, 1996.