TY - GEN
T1 - DWEL
T2 - 32nd IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2012
AU - Douglas, Ewan S.
AU - Strahler, Alan
AU - Martel, Jason
AU - Cook, Timothy
AU - Mendillo, Christopher
AU - Marshall, Robert
AU - Chakrabarti, Supriya
AU - Schaaf, Crystal
AU - Woodcock, Curtis
AU - Li, Zhan
AU - Yang, Xiaoyuan
AU - Culvenor, Darius
AU - Jupp, David
AU - Newnham, Glenn
AU - Lovell, Jenny
PY - 2012
Y1 - 2012
N2 - The Dual-Wavelength Echidna® Lidar (DWEL), a ground-based, full-waveform lidar scanner designed for automated retrieval of forest structure, uses simultaneously-pulsing, 1064 nm and 1548 nm lasers to separate scattering by leaves from scattering by trunks, branches, and ground materials. Leaf hits are separated from others by a reduced response at 1548 nm due to water absorption by leaf cellular contents. By digitizing the full return-pulse waveform (full-width half maximum, 1.5 m) at 7.5 cm intervals, the scanner can identify the type of scattering event, as well as identify and separate multiple scattering events along the pulse path to reconstruct multiple hits at distances of up to 100 m from the scanner. Scanning covers zenith angles of 0-119° and 360 azimuth with pulse centers spaced at 4, 2, and 1 mrad intervals, providing spatial resolutions of 4-40, 2-20, and 1-10 cm respectively at 10 and 100 m distances. The instrument is currently undergoing integration and testing for field deployment in July-August, 2012.
AB - The Dual-Wavelength Echidna® Lidar (DWEL), a ground-based, full-waveform lidar scanner designed for automated retrieval of forest structure, uses simultaneously-pulsing, 1064 nm and 1548 nm lasers to separate scattering by leaves from scattering by trunks, branches, and ground materials. Leaf hits are separated from others by a reduced response at 1548 nm due to water absorption by leaf cellular contents. By digitizing the full return-pulse waveform (full-width half maximum, 1.5 m) at 7.5 cm intervals, the scanner can identify the type of scattering event, as well as identify and separate multiple scattering events along the pulse path to reconstruct multiple hits at distances of up to 100 m from the scanner. Scanning covers zenith angles of 0-119° and 360 azimuth with pulse centers spaced at 4, 2, and 1 mrad intervals, providing spatial resolutions of 4-40, 2-20, and 1-10 cm respectively at 10 and 100 m distances. The instrument is currently undergoing integration and testing for field deployment in July-August, 2012.
KW - Forestry
KW - Laser radar
KW - Vegetation
UR - https://www.scopus.com/pages/publications/84873139364
UR - https://www.scopus.com/pages/publications/84873139364#tab=citedBy
U2 - 10.1109/IGARSS.2012.6352489
DO - 10.1109/IGARSS.2012.6352489
M3 - Conference contribution
AN - SCOPUS:84873139364
T3 - International Geoscience and Remote Sensing Symposium (IGARSS)
SP - 4998
EP - 5001
BT - IGARSS 2012 - 2012 IEEE International Geoscience and Remote Sensing Symposium
PB - Institute of Electrical and Electronics Engineers Inc.
Y2 - 22 July 2012 through 27 July 2012
ER -