[3] [3] Richard M Marino, W R Davis, G C Rich, et al.High-resolution 3D imaging laser radar flight test experiments [J]. Proc. of SPIE,2005, 5791: 138-151.

[4] [4] Joseph Buck, Andrew Malm, Andrew Zakel, et al. High-resolution 3D Coherent Laser Radar Imaging [J]. Proc. of SPIE, 2007,6550(2)：1-9.

[5] [5] Hofton M A, Minster J B, Blair J B. Decomposition of laser altimeter waveforms [J]. IEEE Transaction on Geoscience and Remote Sensing, 2000, 38(4):1989-1996.

[8] [8] Scott Budge, Brad Leishman, Robert Pack. Simulation and modeling of return waveforms from a ladar beam footprint in USU LadarSIM [J]. Proc. of SPIE，2006， 6214.

[9] [9] S Tan, R M Narayanan.A Multiwavelength Airborne Polarimetric Lidar for Vegetation Remote Sensing: Instrumentation and Preliminary Test Results [J]. IEEE，2002.

[10] [10] D Marquardt.An algorithm for least squares estimation of nonlinear parameters[J]. J. Soc. Indust. Appl. Math., 1963 (11): 431-441.

[12] [12] Craig B Markwardt. Curve Fitting in IDL Using MPFIT. http://cow.physics.wisc.edu/craigm/idl/idl.html.