Retrieving Directional Gap Fraction, Extinction Coefficient, and Effective Leaf Area Index by Incorporating Scan Angle Information From Discrete Aerial Lidar Data

A novel physically based scan angle correction algorithm is developed to retrieve the effective leaf area index (LAIe) of a forest canopy using ALS and the effects of scan angle and the number of ALS overpass lines from adjacent flight paths over a Forest canopy on directional gap fraction (DGF) estimates are investigated.