Title :
Modelling the radiometric response of a dynamic, 3D structural model of Scots pine in the optical and microwave domains
Author :
Disney, M.I. ; Saich, P. ; Lewis, P.
Author_Institution :
Dept. of Geogr., Univ. Coll. London, UK
Abstract :
A dynamic 3D structural model is used to simulate the structural growth stages of a Scots pine canopy from age 5 to 50 years. The 3D structural output of the model agrees with observed measures of Scots pine canopy structure. Needles are added to the structural model according to measured density and phyllotaxy (distribution). The 3D structural models are used to drive both optical and microwave models of canopy radiometric response. Simulated canopy radiometric response is compared with airborne hyperspectral reflectance data (HyMAP) and airborne synthetic aperture radar (ASAR) backscatter data, recorded during the SAR and Hyperspectral Airborne Campaign (SHAC) conducted over the UK during 2000. Simulations are shown to agree well in general with observations. This method is shown to be suitable for exploring the impact of canopy structure on the measured remotely sensed signal.
Keywords :
forestry; radiometry; remote sensing by radar; vegetation mapping; 5 to 50 year; AD 2000; Hyperspectral Airborne Campaign; Pinus sylvestris; SAR; Scots pine canopy structure; airborne hyperspectral reflectance data; airborne synthetic aperture radar backscatter data; dynamic 3D structural model; microwave domains; microwave models; optical domains; optical models; phyllotaxy; radiometry; remote sensing; structural growth; Adaptive optics; Backscatter; Density measurement; Hyperspectral imaging; Hyperspectral sensors; Microwave radiometry; Needles; Optical recording; Optical sensors; Reflectivity;
Conference_Titel :
Geoscience and Remote Sensing Symposium, 2003. IGARSS '03. Proceedings. 2003 IEEE International
Print_ISBN :
0-7803-7929-2
DOI :
10.1109/IGARSS.2003.1294846
