Remote Sensing | |
Deciphering the Precision of Stereo IKONOS Canopy Height Models for US Forests with G-LiHT Airborne LiDAR | |
Christopher S. R. Neigh3  Jeffrey G. Masek3  Paul Bourget2  Bruce Cook3  Chengquan Huang1  Khaldoun Rishmawi1  | |
[1] Department of Geographical Sciences, University of Maryland, College Park, MD 20742, |
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关键词: IKONOS; G-LiHT; forest; canopy height model; US; stereo; | |
DOI : 10.3390/rs6031762 | |
来源: mdpi | |
【 摘 要 】
Few studies have evaluated the precision of IKONOS stereo data for measuring forest canopy height. The high cost of airborne light detection and ranging (LiDAR) data collection for large area studies and the present lack of a spaceborne instrument lead to the need to explore other low cost options. The US Government currently has access to a large archive of commercial high-resolution imagery, which could be quite valuable to forest structure studies. At 1 m resolution, we here compared canopy height models (CHMs) and height data derived from Goddard’s airborne LiDAR Hyper-spectral and Thermal Imager (G-LiHT) with three types of IKONOS stereo derived digital surface models (DSMs) that estimate CHMs by subtracting National Elevation Data (NED) digital terrain models (DTMs). We found the following in three different forested regions of the US after excluding heterogeneous and disturbed forest samples: (1) G-LiHT DTMs were highly correlated with NED DTMs with
【 授权许可】
CC BY
© 2014 by the authors; licensee MDPI, Basel, Switzerland
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RO202003190028545ZK.pdf | 1381KB | download |