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Proceedings Paper

Improving the quantification of georeferenced images in the airborne scanning laser ranging-imaging sensor (ASLRIS)
Author(s): Yihua Hu; Rong Shu; Yongqi Xue
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Paper Abstract

Today, it becomes more and more important to provide high quantification of remote sensing information to study and utilize earth resources. Georeferenced images, as advanced remote sensing information, consist of ground images with their 3D positioning coordinates and play a key role in earth observation. So, the quantification of georeferenced images is attracting people's attentions. In this paper, an airborne sensor called the ASLRIS system for producing georeferenced images is introduced first. In succession, the fundamental and quantification of georeferenced images is analyzed, where the positioning quantification as well as its limiting factors is especially discussed on the system. Then some technical methods applied in the ASLRIS system to improve the positioning quantification of georeferenced images are studied emphatically. The technique of waveform digitization for precise time-of-flight discrimination and the technique of tapped delay line for precise time interval measurement are accomplished to improve the accuracy of airborne scanning laser ranging. Some mechanic calibrations and parameter measurements are implemented to synthetically improve the positioning accuracy. The conic scanning technique is applied to improve the horizontal positioning resolution. Finally, some test results of the ASLRIS system are described. It is indicated that the quantification level of georeferenced images is improved obviously.

Paper Details

Date Published: 15 December 2000
PDF: 8 pages
Proc. SPIE 4130, Infrared Technology and Applications XXVI, (15 December 2000); doi: 10.1117/12.409864
Show Author Affiliations
Yihua Hu, Shanghai Institute of Technical Physics (China)
Rong Shu, Shanghai Institute of Technical Physics (China)
Yongqi Xue, Shanghai Institute of Technical Physics (China)

Published in SPIE Proceedings Vol. 4130:
Infrared Technology and Applications XXVI
Bjorn F. Andresen; Gabor F. Fulop; Marija Strojnik, Editor(s)

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