The research of the laser facula of laser ranger finder in the far distance

Rongguo Fu; Chula Su; Mengxi Li; Yiliang Guo; Yu Cheng; Benkang Chang

doi:10.1117/12.873565

3 March 2011 The research of the laser facula of laser ranger finder in the far distance

Rongguo Fu, Chula Su, Mengxi Li, Yiliang Guo, Yu Cheng, Benkang Chang

Proceedings Volume 7912, Solid State Lasers XX: Technology and Devices; 79121Z (2011) https://doi.org/10.1117/12.873565
Event: SPIE LASE, 2011, San Francisco, California, United States

Abstract

This article describes the generation of the laser facula, and analyzes the energy characteristics of the facula. A testing device is designed to measure the facula of the laser light in the far distance, and the system can collect and analyze the laser facula. The testing system sets by the laser ranger finder, thousands of meters away from the target. A near infrared CCD (Charge Coupled Device) camera of high sensitivity is used to collect the facula of 1.06μm laser. Add a filter of 1.06μm before the CCD camera to get more accurate infrared information. A beam of the laser ranger finder shoots to the target. A infrared CCD and the laser ranger finder is synchronizing triggered. For real-time observation of the background, the system use another ordinary CCD and telephoto lenses. A series of laser facula which is collected by the infrared CCD is stored into computer as the form of bitmaps. The testing device uses median filter to denoise the facula pictures and use image processing to analyze the gray-scale of facula, thus the device can get the intensity distribution, the centroid position and its variation with the spot. The device uses image fusion to realize the background integration of white-light CCD and infrared CCD images.

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Rongguo Fu, Chula Su, Mengxi Li, Yiliang Guo, Yu Cheng, and Benkang Chang "The research of the laser facula of laser ranger finder in the far distance", Proc. SPIE 7912, Solid State Lasers XX: Technology and Devices, 79121Z (3 March 2011); https://doi.org/10.1117/12.873565

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KEYWORDS

Infrared radiation

Charge-coupled devices

Pulsed laser operation

Infrared imaging

Optical filters

CCD cameras

Infrared cameras

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