You are here: Home
/ Publication Information
Title: Accuracy of an IFSAR-derived digital terrain model under a conifer forest canopy.
Author: Andersen, Hans-Erik; Reutebuch, Stephen E.; McGaughey, Robert J.;
Source: Canadian Journal of Remote Sensing. 31(4): 283-288
Publication Series: Miscellaneous Publication
Description: Accurate digital terrain models (DTMs) are necessary for a variety of forest resource management applications, including watershed management, timber harvest planning, and fire management. Traditional methods for acquiring topographic data typically rely on aerial photogrammetry, where measurement of the terrain surface below forest canopy is difficult and error prone. The recent emergence of airborne P-band interferometric synthetic aperture radar (IFSAR), a highresolution, microwave remote sensing technology. has the potential to provide significantly more accurate terrain models in forested areas. Low-frequency, P-band radar energy physically penetrates through the vegetation canopy and reflects from the underlying terrain surface, allowing for accurate measurement of the terrain surface elevation even in areas with dense forest cover. In this study, the accuracy of a high-resolution DTM derived from P-band IFSAR data collected over a mountainous forest area in western Washington State was rigorously evaluated through a comparison with 347 topographic checkpoints measured with total station survey equipment and collected under a variety of canopy densities. The mean DTM error was -0.28 ± 2.59 m (mean ± standard deviation), and the root mean squared error (RMSE) was 2.6 m. DTM elevation errors for four canopy cover classes were -0.67 ± 1.20 m (RMSE = 1.38 m) for clearcut, -0.62 ± 1.00 m (RMSE = 1.18 m) for heavily thinned, -0.41 ± 2.32 m (RMSE = 2.36 m) for lightly thinned, and 0.20 ± 3.3 1 m (RMSE = 3.32 m) for uncut.
- We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
- This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.
- You may send email to email@example.com to request a hard copy of this publication. (Please specify exactly
which publication you are requesting and your mailing address.)
XML: View XML
Andersen, Hans-Erik; Reutebuch, Stephen E.; McGaughey, Robert J. 2005. Accuracy of an IFSAR-derived digital terrain model under a conifer forest canopy. Canadian Journal of Remote Sensing. 31(4): 283-288
Get the latest version of the Adobe Acrobat reader or Acrobat Reader for Windows with Search and Accessibility