Pulse modulation method for LED lidar light source

Wenting Zhong; Jun Liu; Dengxin Hua; Fang Wang; Kejun Yan

doi:10.1117/12.2035607

10 October 2013 Pulse modulation method for LED lidar light source

Wenting Zhong, Jun Liu, Dengxin Hua, Fang Wang, Kejun Yan

Proceedings Volume 8916, Sixth International Symposium on Precision Mechanical Measurements; 89162U (2013) https://doi.org/10.1117/12.2035607
Event: Sixth International Symposium on Precision Mechanical Measurements, 2013, Guiyang, China

Abstract

A LED lidar system program was proposed for atmospheric aerosol detection. Compared with the conventional lidar using the laser, this system employs LED as the detection light source. Due to the wealth wavelength of LED, LED lidar achieves aerosol detection at a specific wavelength, and it makes the detection of aerosol particle size distribution easier. This paper presents a pulse modulation system for high-power LED light source. The system consists of pulse generator, narrow pulse driving circuit, and high-power LED array. A FPGA system is designed to generate the pulse whose frequency is adjusted by remote control. Using avalanche switching characteristics, the avalanche transistor circuit produces ultra-narrow pulses to drive the high-power LED array. Using U.S. standard atmospheric model, the detection capability of LED lidar system was simulated. Simulation result shows that the designed LED pulse light source used for lidar can meet the requirements of lower atmospheric aerosol detection.

Citation Download Citation

Wenting Zhong, Jun Liu, Dengxin Hua, Fang Wang, and Kejun Yan "Pulse modulation method for LED lidar light source", Proc. SPIE 8916, Sixth International Symposium on Precision Mechanical Measurements, 89162U (10 October 2013); https://doi.org/10.1117/12.2035607

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available