Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
6346225 | Remote Sensing of Environment | 2015 | 15 Pages |
Abstract
Simulation results of the bright daylight and low vegetation reflectivity conditions for collecting photon counting LiDAR with no topographic relief show that 1-2 photons are returned for 79%-88% of LiDAR shots. Signal photons account for ~ 67% of all LiDAR returns, while ~ 50% of shots result in 1 signal photon returned. The proportion of these signal photon returns do not differ significantly (p > 0.05) for AGB intervals > 20 Mg · haâ 1. The 50 m link-scale approximates the finest horizontal resolution (length) at which photon counting LiDAR collection provides strong model fits and minimizes forest structure uncertainty in the synthetic Larix stands. At this link-scale AGB > 20 Mg · haâ 1 has AGB error from 20-50% at the 95% confidence level. These results suggest that the theoretical sensitivity of ICESat-2 photon counting LiDAR measurements alone lack the ability to consistently discern differences in inferred AGB at 10 Mg · haâ 1 intervals in sparse forests characteristic of the taiga-tundra ecotone.
Related Topics
Physical Sciences and Engineering
Earth and Planetary Sciences
Computers in Earth Sciences
Authors
P.M. Montesano, J. Rosette, G. Sun, P. North, R.F. Nelson, R.O. Dubayah, K.J. Ranson, V. Kharuk,