[1] M A Lefsky, W B Cohen, S A Acker. Lidar remote sensing of the canopy structure and biophysical properties of Douglas-Fir western hemlock forests. Remote Sens Environ, 70, 339-361(1999).

[2] M A Wulder, J C White, G Stinson. Implications of differing input data sources and approaches upon forest carbon stock estimation. Environmental Monitoring and Assessment, 166, 543-561(2010).

[3] L I Duncanson, K O Niemann, M A Wulder. Integration of GLAS and Landsat TM data for aboveground biomass estimation. Canadian Journal of Remote Sensing, 36, 129-141(2010).

[4] T Markus, T Neumann, A Martino. The ice, cloud, and land elevation Satellite-2 (ICESat-2): Science requirements, concept, and implementation. Remote Sensing of Environment, 190, 260-273(2017).

[5] D Xie, G Li, Y Zhao. U. S. GEDl space-based laser altimetry system and its application. Space International, 480, 41-46(2018).

[6] [6] Singh U N, Sugimoto N, Jayaraman A, et al. Lidar remote sensing f envirmonitingXVOverview status of vegetation lidar mission MOLI[C]Lidar Remote Sensing fEnvironmental Moniting XV. Lidar Remote Sensing f Environmental Moniting XV, 2016: 987908.

[7] [7] Abshire J B, Smith J C, Schutz B E. The geoscience laser altimeter system (GLAS)[C]AIP Conference Proceedings. AIP, 1998, 420(1): 3337.

[8] G Sun, K J Ranson, D S Kimes. Forest vertical structure from GLAS: An evaluation using LVIS and SRTM data. Remote Sensing of Environment, 112, 107-117(2008).

[9] M A Lefsky, D J Harding, M Keller. Estimates of forest canopy height and aboveground biomass using ICESat. Geophysical Research Letters, 32, L22S02(2005).

[10] [10] Pang Y. Fest parameters inversion using spacebne InSAR Lidar technology[D]. Beijing: Institute of Remote Sensing Applications, Chinese Academy of Sciences, 2005.（in Chinese）

[11] Y Xing, A D Gier, J Zhang. An improved method for estimating forest canopy height using ICESat-GLAS full waveform data over sloping terrain: A case study in Changbai mountains, China. International Journal of Applied Earth Observation and Geoinformation, 12, 385-392(2010).

[12] H Chi, J Huang, J Qiu. Estimation of forest above ground biomass using ICESat/GLAS data and Landsat/ETM+imagery. Science of Surveying and Mapping, 43, 9-16(2018).

[13] [13] Hieu D, Nbert P, Roderik L. Full wavefm analysis: ICESat laser data f l cover classification[C]Proceedings of the ISRRS term Symposium, Remote Sensing: From Pixels to Processes, 2006: 811.

[14] V H Duong, R Lindenbergh, N Pfeifer. Single and two epoch analysis of ICESat full waveform data over forested areas. International Journal of Remote Sensing, 29, 1453-1473(2008).

[15] J Zhang, Gier A De, Y Xing. Full waveform-based analysis for forest type information derivation from large footprint spaceborne lidar data. Photogrammetric Engineering & Remote Sensing, 77, 281-290(2011).

[16] R Wang, Y Xing, H You. Forest basal area estimation based on spaceborne LiDAR waveform Data. Journal of Northwest Forestry University, 29, 156-162(2014).

[17] D J Harding, C C Carabajal. ICESat waveform measurements of within-footprint topographic relief and vegetation vertical structure. Geophysical Research Letters, 32, 741-746(2005).

[18] A L Neuenschwander, T J Urban, R Gutierrez. Characterization of ICESat/GLAS waveforms over terrestrial ecosystems: Implications for vegetation mapping. Journal of Geophysical Research, 113, G02S03(2008).

[19] S Luo, C Wang, X Xi. Forest leaf area index estimationusing combined ICESat/GLAS and optical remote sensing image. J Infrared Millim Waves, 34, 243-249(2015).

[20] Paul R Stysley, Coyle D Barry, Richard B Kay. Long term performance of the high output maximum efficiency resonator (HOMER) laser for NASA’s global ecosystem dynamics investigation (GEDI) lidar. Optics & Laser Technology, 68, 67-72(2015).

[21] P M Montesano, J Rosette, G Sun. The uncertainty of biomass estimates from modeled ICESat-2 returns across a boreal forest gradient. Remote Sensing of Environment, 158, 95-109(2015).

[22] A Neuenschwander, K Pitts. The ATL08 land and vegetation product for the ICESat-2 Mission. Remote Sensing of Environment, 221, 247-259(2019).

[23] J Zhang, J Kerekes. An adaptive density-based model for extracting surface returns from photon-counting laser altimeter data. IEEE Geoscience and Remote Sensing Letters, 12, 726-730(2014).

[24] [24] Nie S. Study on the estimation method of fest canopy parameters using LiDAR data[D]. Beijing: University of Chinese Academy of Science(Institute of Remote Sensing Digital Earth), 2017.（in Chinese）

[25] J Huang, Y Xing, H You. Particle swarm optimization-based noise filtering algorithm for photon cloud data in forest area. Remote Sensing, 11, 980(2019).

[26] S Nie, C Wang, X Xi. Estimating the vegetation canopy height using micro-pulse photon-counting LiDAR data. Optics Express, 26, 520-540(2018).

[27] S C Popescu, T Zhou, R Nelson. Photon counting LiDAR: An adaptive ground and canopy height retrieval algorithm for ICESat-2 data. Remote Sensing of Environment, 208, 154-170(2018).