Geometrical Form Factor Improvement for Receiving System of Infrared Lidar

Kouki IKUTA; Tsutomu KUDO; Noboru YOSHIKANE; Nilesh J. VASA; Yuji OKI; Mitsuo MAEDA

doi:10.1007/s10043-999-0464-y

Kouki IKUTA, Tsutomu KUDO, Noboru YOSHIKANE, Nilesh J. VASA, Yuji OKI, Mitsuo MAEDA

Author information

Kouki IKUTA
Department of Electronic Device Engineering, Graduate School of Information Science and Electrical Engineering, Kyushu University, 6–10–1, Hakozaki, Fukuoka, 812–8581 Japan
Tsutomu KUDO
Department of Electronic Device Engineering, Graduate School of Information Science and Electrical Engineering, Kyushu University, 6–10–1, Hakozaki, Fukuoka, 812–8581 Japan
Noboru YOSHIKANE
Department of Electronic Device Engineering, Graduate School of Information Science and Electrical Engineering, Kyushu University, 6–10–1, Hakozaki, Fukuoka, 812–8581 Japan
Nilesh J. VASA
Department of Electronic Device Engineering, Graduate School of Information Science and Electrical Engineering, Kyushu University, 6–10–1, Hakozaki, Fukuoka, 812–8581 Japan
Yuji OKI
Department of Electronic Device Engineering, Graduate School of Information Science and Electrical Engineering, Kyushu University, 6–10–1, Hakozaki, Fukuoka, 812–8581 Japan
Mitsuo MAEDA
Department of Electronic Device Engineering, Graduate School of Information Science and Electrical Engineering, Kyushu University, 6–10–1, Hakozaki, Fukuoka, 812–8581 Japan

Keywords: lidar, laser radar, ray tracing, light detection system, Mie scattering, geometrical form factor, short-range detection

JOURNAL FREE ACCESS

1999 Volume 6 Issue 5 Pages 464-470

DOI https://doi.org/10.1007/s10043-999-0464-y

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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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