Digital Elevation Estimation of Seminatural Forests Using Polarimetric Interferometric SAR Data
Parivash Lumsdon(1), Bryan Mercer(1) and Qiaoping Zhang(1)
(1) Intermap Technologies Corp., # 1200, 555 - 4th Ave., S.W. Calgary, AB T2P 3E7, Canada
The purpose of our work is to examine the practicability of using Polarimetric Interferometric SAR (PolInSAR) techniques on ALOS PALSAR data to extract forest canopy heights, and ‘Bald earth’ ground elevation height. We will focus our work on European semi-natural forest stands of GlenAffric. The PolInSAR RVoG model (Random Volume over Ground) proposed in  and elaborated in , permits a separation of ground and canopy scattering components of the interferometric phase. Through model inversion, the canopy height can be derived . We will examine of our findings of Alos data against that of E-SAR L-Band Airborne data of the test site acquired through ‘SHAC’ project.
In this work we primarily focus our research on the extraction of DEM underneath canopy and the estimation of tree height and other forest parameters. The principal research site is chosen to be GlenAffric, Scotland This will overlap the area covered in the SHAC airborne campaign. We use the ground measurements taken during the SHAC campaign and Intermaps X-Band Star3i data for validation and verification of our results.
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