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Proceedings Paper

Correlation between LIDAR and radar reflux intensity and the accuracy of the associated elevation information
Author(s): G. Heidelmeyer; B. Eilmus; U. Klingauf
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Paper Abstract

Due to upcoming new data driven technologies in the aviation the impact of digital terrain data is growing conspicuously. Especially for ground near operations reliable terrain information is necessarily demanded. Based on modern earth observation technologies a new generation of elevation data is obtainable. However, it shall be analysed how far data derived from remote sensing techniques like INSAR (Interferometric Synthetic Aperture Radar) or LIDAR (Light Detection And Ranging) can be applied to aviation purposes. Typically, terrain data were represented in relation to the bare earth to obtain a "Digital Terrain Model" (DTM). For aviation purposes a "Digital Surface Model" (DSM) representing the real surface of the earth including all cover like vegetation and buildings is recommended (see Fig. 4). But due to the characteristics of active remote sensors the derived model always describes an in between of the two elevation representations. To satisfy these special requirements of the aviation the Institute of Flight Systems and Automatic Control (FSR) at the Technische Universität Darmstadt is dealing with the determination of the influencing factors which affect the quality of the terrain models being appropriate to be used as a DSM. Intention of this study is to identify how far the reflux intensity of LIDAR and radar beams affects the quality of the associated elevation model. By knowing the cause and the impact of the deviations a "Safety Buffer" will be determined in order to increase the integrity of the terrain data to allow the applicability for dedicated applications (Fig. 3).

Paper Details

Date Published: 4 May 2007
PDF: 10 pages
Proc. SPIE 6550, Laser Radar Technology and Applications XII, 655009 (4 May 2007); doi: 10.1117/12.719373
Show Author Affiliations
G. Heidelmeyer, Technische Univ. Darmstadt (Germany)
B. Eilmus, Technische Univ. Darmstadt (Germany)
U. Klingauf, Technische Univ. Darmstadt (Germany)

Published in SPIE Proceedings Vol. 6550:
Laser Radar Technology and Applications XII
Monte D. Turner; Gary W. Kamerman, Editor(s)

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