全光纤拉曼测温激光雷达系统集成方法与实验研究

项目名称： 全光纤拉曼测温激光雷达系统集成方法与实验研究

项目编号： No.61275185

项目类型： 面上项目

立项/批准年度： 2013

项目学科： 无线电电子学、电信技术

项目作者： 华灯鑫

作者单位： 西安理工大学

项目金额： 96万元

中文摘要： 项目依据已结题国家基金项目所取得的研究成果，针对空基与星基平台的激光雷达设计技术要求，提出全光纤可见波段拉曼测温激光雷达系统集成方法与实验研究。采用大气分子的转动拉曼测温原理，以研制成功的可见光波段窄带光纤布喇格光栅（FBG）为核心器件，重点研究系统集成过程中光机电系统的效率优化方法，全光纤的转动拉曼分光系统的设计方法， FBG滤光器间的杂散光隔离及FBG的旁瓣抑制与波长调谐技术，强背景噪声的抑制与极微弱信号提取及参数反演算法等技术与方法，以期构建全光纤分光的拉曼测温激光雷达实验系统。通过与现有拉曼测温激光雷达系统对比实验研究，验证系统所涉及的原理、方法及技术可行性，获得全光纤拉曼测温激光雷达的系统集成方法与技术。研究依托前期研究成果，特别融合了现代光纤传感、激光探测与系统集成等新技术与方法，其成果将为未来发展空基或星基平台的全光纤温度探测激光雷达提供新的思路、方法及系统集成技术。

中文关键词： 激光雷达；大气温度；拉曼散射；光纤布拉格光栅；全光纤分光

英文摘要： According to the research achievements obtained by NSFC closed, aimed at the technical requirements in lidar design for space-based and satellite-based platforms, the system integration methods and experimental research for an all-fiber Raman temperature lidar with the visible laser wavelength are proposed. Based on the temperature measurement principle of atmospheric molecular rotational Raman scattering, with the narrowband Fiber Bragg Grating (FBG) in the visible light as the core spectroscopic device, the research is focused on the key technologies and methods in the system intergration processing, such as the optical, mechanical and electrical system efficiency optimization method，spectroscopic system design of all-fiber rotational Raman, stray light isolation between the FBG filters, sidelobe suppression of FBG, wavelength tuning technology, suppression of intense background noise, weak signal extraction and inversion algorithm, and the ultimate goal is to establish an experimental system of all-fiber Raman temperature lidar. The calibration experiments will be carried out by comparing with the existing temperature lidar, and its feasibility of system performance parameters, including its principles, methods and technologies will be validated to obtain the system integration methods and techniques of all-f

英文关键词： lidar；atmospheric temperature；Ramna scattering；FBG；all-fiber spectroscope