The Development of Lidar technology for pollution and wind measurements.

• Main Authors: Ming-Ju Yu, 余明如
• Other Authors: Shu-Huang Sun
• Format: Others
• Language: zh-TW
• Published: 2014
• Online Access: http://ndltd.ncl.edu.tw/handle/k6td3m

碩士 === 崑山科技大學 === 機械工程研究所 === 102 === The objectives of this thesis are to monitor air pollution and measure wind profiles by using Lidar (Light Dection and Ranging) system. The Lidar has the function of remote measurement, due to it receives the backscatter signals from scatter without any additional reflective device. Generally speaking, there are 2 information offered by the backscatter signals, one is the phase of the signals, and other is the intensity of signals. The former contains the properties of position and velocity. The latter are used as the basis of component analysis. As the backscatter signals contain the interactive information of light and medium, therefore, the physical characteristics (such as absorption, refractive index, particle size and concentration etc.) and chemical composition or atmospheric parameters (such as wind speed, temperature, visibility, cloud height, etc.) can be known through the appropriate instrument to receive, process and analyze. In fact, there are many different mechanisms used, the Lidar system are so different. How to find out appropriate mechanisms between the properties of medium and the intensity of received backscatter signals are the principles of design and application. The thesis focus on the 2 studies, the first is to measure pollution by 3-D scanning Lidar, and the second is to develop Lidar system for the study of wind measurement.