白天工作条件下大气激光雷达探测的实验研究  

Experimental Researches of Atmosphere Lidar System Working by Day

作　　者：宋小全[1] 刘智深[1] 贺岩[1] 刘金涛[1] 

机构地区：[1]青岛海洋大学海洋遥感研究所

出　　处：《青岛海洋大学学报（自然科学版）》2001年第4期593-599,共7页Journal of Ocean University of Qingdao

基　　金：国家863-308重点项目 (86 3- 30 8- 14- 0 3(5 ) );国家自然科学基金课题 (4 980 5 0 0 1)资助

摘　　要：作者在已完成大气激光雷达系统夜间工作的基础上 ,对白天工作条件下的各种环境背景光的干扰进行了理论与实验分析 ,得出太阳直射光和天空光为白天工作的主要背景干扰。实验结果表明 ,经过激光发射与接收视场角严格匹配及使用干涉滤光器 (2 .6 nm和 0 .15nm)进行窄带滤波 ,背景干扰被明显地剔除 ,可进一步压低背景干扰约 2 0倍。证明采取视场匹配及干涉滤光器的措施可基本保证激光雷达系统在白天条件下工作。Based on the finished atmosphere lidar system work by night, theoretical and experimental analysis is done in this paper as lidar system works by day with various environmental background interferes. It is found that the direct solar radiation and sky radiation are the primary background interferes. Measurement results show that background interferes are eliminated markedly via matching the laser emission and receiving field angle strictly and by using narrowband filters (2.6nm & 0.15nm). Background interfere can be depressed more than twenty times. It is proved that the lidar system can work by day when the field angle is matched and interference filters are used.

关 键 词：大气激光雷达 背景干扰 回向散射 太阳直射光 太阳光 接收视场角 干涉滤光器 

分 类 号：P412.25[天文地球—大气科学及气象学]