Optical Review
Print ISSN : 1340-6000
ISSN-L : 1340-6000
Geometrical Form Factor Improvement for Receiving System of Infrared Lidar
Kouki IKUTATsutomu KUDONoboru YOSHIKANENilesh J. VASAYuji OKIMitsuo MAEDA
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1999 Volume 6 Issue 5 Pages 464-470

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Abstract
Improvement of an infrared light detection and ranging (IR-lidar) system for a short range (0-1000 m) and with high resolution is studied to enhance a geometrical form factor. Theoretical modeling of Mie scattering echo signals agrees with the experimental results. Introduction of a lens in front of the detector is effective for increasing the geometrical form factor, and a significant improvement in the received signal intensity is achieved, especially for short-range measurements around 100 m. This is useful for the IR-lidar system with a detector diameter of less than 1 mm. In the theoretical model, a ray-tracing technique was applied and a transmitting laser beam with Gaussian profile was considered for better accuracy.
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© 1999 by the Optical Society of Japan
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