Finding Leaves in the Forest: The Dual-Wavelength Echidna Lidar

被引：64

作者：

Douglas, Ewan S. ^{[1
]}

Martel, Jason ^{[2
]}

Li, Zhan ^{[3
]}

Howe, Glenn ^{[2
]}

Hewawasam, Kuravi ^{[2
]}

Marshall, Robert A. ^{[4
]}

Schaaf, Crystal L. ^{[5
]}

Cook, Timothy A. ^{[2
]}

Newnham, Glenn J. ^{[6
]}

Strahler, Alan ^{[3
]}

Chakrabarti, Supriya ^{[2
]}

机构：

[1] Boston Univ, Dept Astron, Boston, MA 02215 USA

[2] Univ Massachusetts, Lowell, MA 01854 USA

[3] Boston Univ, Dept Earth & Environm, Boston, MA 02215 USA

[4] Stanford Univ, Dept Aeronaut & Astronaut, Stanford, CA 94305 USA

[5] Univ Massachusetts, Dept Environm Earth & Ocean Sci, Boston, MA 02125 USA

[6] CSIRO Land & Water, Acton, ACT 2601, Australia

来源：

IEEE GEOSCIENCE AND REMOTE SENSING LETTERS | 2015年 / 12卷 / 04期

基金：

美国国家科学基金会;

关键词：

Forestry; laser radar; vegetation mapping; PROFILES; AIRBORNE;

D O I：

10.1109/LGRS.2014.2361812

中图分类号：

P3 [地球物理学]; P59 [地球化学];

学科分类号：

0708 ; 070902 ;

摘要：

The dual-wavelength Echidna lidar is a portable ground-based full-waveform terrestrial scanning lidar for characterization of fine-scale forest structure and biomass content. While scanning, the instrument records the full time series of returns at a half-nanosecond rate from two coaligned 5-ns pulsed lasers at 1064 and 1548 nm wavelengths. Leaves absorb more strongly at 1548 nm compared to stems, allowing discrimination of forest composition at milliradian scales from the ground to the forest canopy. This work describes the instrument design and data products and demonstrates the power of two wavelength lidar to clearly distinguish leaves from woody material with preliminary field data from the Sierra Nevada National Forest.

引用

页码：776 / 780

页数：5

共 16 条

[1]

[Anonymous], 2007, DATA SERIES

[2] PRIMARY AND SECONDARY EFFECTS OF WATER-CONTENT ON THE SPECTRAL REFLECTANCE OF LEAVES [J].