On variation of visibility and air pollution in Meizhou Bay;
湄洲湾沿海能见度和大气烟尘污染的变化
Lanzhou Aerosol Optical Depth in Winter and Their Relation with Visibility;
兰州冬季大气气溶胶光学厚度及其与能见度的关系
Analyses on Variation Trends of Atmospheric Visibility and Its Effect Factor in Muilt-Cities in Central Liaoning;
辽宁中部城市群大气能见度变化趋势及影响因子分析
So using continuous spectrum sun-photometer and forward scatter visibility sensor, we measured the atmosphere column optical characteristic and plan extinction coefficient on earth on the base of two experiments, respectively.
利用连续光谱的太阳辐射计和前向散射能见度仪,测量了大气柱光学特性以及近地面层的大气水平消光系数,获得了可见光波段的大气气溶胶标高的变化特征:随着波长值的增加,气溶胶标高减小;对于实验当地的情况,一般冬季气溶胶标高要大于夏季的气溶胶标高。
The intensity of forward-scattered light is measured by the forward-scattering visibility sensor, which determines the extinction coefficient of the air, then the visibility can be obtained.
前向散射能见度仪测量前向散射光强度,确定大气的消光系数,进而获得大气的能见度值。
Based on these data,the paper derived and analyzed the regional visibility distributions for each season over Shanghai area from seasonal AOD distributions.
利用气象站点能见距的历史资料和NASA的MODIS卫星遥感手段获取10km*10km分辨率的气溶胶光学厚度资料,建立二者之间的季节平均关系,得到了上海地区季节变化的气溶胶标高,并利用标高数据和气溶胶光学厚度的季节分布,反演出上海地区季节变化的区域能见距分布,研究近地层大气气溶胶与地面能见距的关系,分析上海市能见度时空分布特征,结果显示:上海城区在冬春季平均能见距较差,市区中心能见距在10km以下;低能见距中心分布明显,且主要分布在杨浦、桃浦、吴淞等工业区范围。
Low-visibility occurrence at Chengdu Shuangliu Airport covers almost one third of a year.
双流机场全年近 1/ 3的日子有低能见度天气出现 ,最多的冬季平均日数达到总数的 80 % ,而且低能见度有明显的季节变化和日变化。
Among them, the influence of the low-visibility processes caused by fog, rainfall and other weathers on transportation have been special great.
近年来,我国的公路、航空、铁路、水上运输、城市交通等迅猛发展,各种气象灾害对交通运输质量和安全的影响受到全社会的广泛关注,尤其是因雾、强降水等引起的低能见度天气对交通的影响更大。
This enhancement technique is effective especially for images with poor visibility or low resolution.
这种增强技术尤其对能见度差、分辨率低的图像有很好的效果,因此适合于对遥感图像的增强处理。
Application research of visibility meter in laser-ranging ability test;
能见度仪在激光测距能力检测中的应用研究
In order to improve the technology in atmosphere detection and explore new,faster,and more accurate methods to retrieve atmosphere visibility,the atmosphere visibility was simultaneously measured in Qingdao with a micro-pulsed lidar,designed by Ocean Remote Sensing Laboratory,Ocean University of China,and a NQ-1 commercial visibility meter respectively.
为了改进乃至革新大气能见度的探测技术,探索新型、快速、准确测量大气能见度的方法,采用自行研制的能见度微脉冲激光雷达,进行了水平大气能见度测量实验,并同已经商品化的能见度仪NQ-1进行了同步对比测量。
Automatic detection of airfield runways in forward-looking aerial images with low visibility;
低能见度前下视航拍图像中机场跑道的自动检测
Climatic characteristics of low visibility in Urumqi City in recent 30 years;
乌鲁木齐近30年低能见度气候特征
In this paper,the working principle,installation configuration and data collection of the monitoring equipments working under low expressway visibility conditions are introduced through analysis and research on the special climate conditions in southern China and with reference to the low visibility influence of the harsh climate conditions such as fogs,storms,ices,snows,etc.
通过对我国南方地区特殊气候条件的分析与研究,结合在大雾、暴雨、冰雪等恶劣天气条件下低能见度对高速公路行车安全的影响,介绍高速公路低能见度监测设备的工作原理、布设及数据采集,并阐述高速公路监控系统在低能见度天气条件下其预警、应急指挥、预案发布等方面所采取的措施及技术方法。