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Proceedings Paper

Comparison of lidar's characteristics at different flying height
Author(s): Qiong Ding; Wu Chen; Bruce King; Yanxiong Liu
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Paper Abstract

As the cost of LiDAR equipment is high and different projects prefer different goals, the flying scheme needs to be strict planned to save cost and energy. In this study, LiDAR's ability at different flying height was tested. Two trials with different flying height are compared. Analysis was conducted by considering the relative accuracy, intensity and penetration ability to find out the difference of two trials. The result shows the relative accuracy between these two trials is 0.37 m. True relative accuracy is achieved when removing canopy as large interpolation errors often exist at places with great slope changes like the canopy. Intensity values decrease greatly with the increase of flying height due to the longer travel distance and more energy loss in atmosphere. Statistical results showed that in each trial high intensity is apt to be from low canopy and only return. LiDAR vegetation penetration ability decreased greatly at low vegetation due to the enlarged footprint and weakened energy, but it doesn't change on large vegetation.

Paper Details

Date Published: 24 October 2011
PDF: 9 pages
Proc. SPIE 8286, International Symposium on Lidar and Radar Mapping 2011: Technologies and Applications, 828607 (24 October 2011); doi: 10.1117/12.912611
Show Author Affiliations
Qiong Ding, The Hong Kong Polytechnic Univ. (Hong Kong, China)
Wu Chen, The Hong Kong Polytechnic Univ. (Hong Kong, China)
Bruce King, The Hong Kong Polytechnic Univ. (Hong Kong, China)
Yanxiong Liu, The First Institute of Oceanography (China)


Published in SPIE Proceedings Vol. 8286:
International Symposium on Lidar and Radar Mapping 2011: Technologies and Applications
Jonathan Li, Editor(s)

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