The algorithm of retrieving the horizontal visibility based on lidar was developed in this paper.
激光雷达测量能见度是激光雷达的一个重要应用,水平能见度的反演在线性区的选取上存在的不确定因素制约了激光雷达的应用。
By analyzing difference in horizontal visibility observed by Eyes and measurements by FD12 in No.
利用2004年4月22日至5月29日塔克拉玛干沙漠腹地气象自动站水平能见度观测资料,通过对器测和目测值的数据对比分析得出:①水平器测值约是目测的2倍,变化趋势基本一致;②目、器测值的差异导致沙尘暴发生的等级概率产生偏移;③随着沙尘暴等级减弱,目测值与器测值的平均误差值不断减小,平均绝对误差值和均方误差量级接近甚至达到沙尘暴等级划分标准的量级。
The horizontal visibility distribution of lower atmosphere and the vertical distribution of the cloud mixing ratio are calculated based upon the model outputs, the results indicates that, the shape of fog area , the time when fog formed and dissipated, as well as the thickness of the fog which derived from the simulation agrees with the observation data well.
然后利用RAMS(Regional Atmospheric Modeling System)模式模拟了本次大雾过程,计算得出了大气的水平能见度分布和云水混合比的垂直分布,结果表明,在雾区形状、雾生消时间以及雾的厚度上,模拟结果与观测资料比较一致。
In this article, the correlation between MODIS (Moderate Resolution Imaging Spectroradiometer) spectral data and atmospheric horizontal visibility (AHV) was analyzed over the South China coastal area during October 2002 to August 2003.
将MODIS影像分为:晴空(Ⅰ);雾和低云(Ⅱ);有降水积云(Ⅲ)和其它(Ⅳ)4类,并按照通道间相关性最小和与大气水平能见度相关最大的原则进行通道筛选。
To determine the influence of luminance uniformity on visibility levels,and to study methods of visibility design,we carried out experiments having different luminaire collocation modes.
为了比较亮度均匀度对可见度水平的影响,深化可见度的设计方法,选取了截光型、半截光型道路照明灯具,以不同的灯具布置方式进行实验研究;利用小目标物可见度计算方法,研究亮度均匀度与计算点可见度水平分布的关系。
Studies on the Application of Empirical Formulae to the Calculation of Horizontal Visibility in Qingdao Coastal Area
水平能见度经验公式在青岛沿海地区的应用
The Opinion on Improving the Teen-age Physical Functional Level;
改善青少年身体机能水平的对策性意见
creative level [IT competency of teachers]
高级程度〔教师的信息科技能力水平〕
comfortable level [IT competency of teachers]
中级程度〔教师的信息科技能力水平〕
basic level [IT competency of teachers]
基本程度〔教师的信息科技能力水平〕
competent level [IT competency of teachers]
中上程度〔教师的信息科技能力水平〕
Soil compaction may limit horizontal root extension.
土壤的紧密度能限制水平根的扩展。
Analysis and Treatment of Common Failure Causes of Temperature Measurement System for Pumped Storage Power Station
抽水蓄能电站温度测量系统常见故障原因分析
horizontal velocity of the scanning spot
水平扫描点的水平速度
It was the best time for snorkeling, since the visibility at high tide is not good enough and the water is too shallow at low tide.
这是潜水的最好时候，因为涨潮时能见度不够高，而潮落时水又太浅。
The limpid sea water with high visibility and the magical marine world are the favorite of amateur divers.
能见度极高的海水和五彩斑斓的海底世界更是潜水爱好者的最爱。
Bends and gradients, where necessary, should always be slight. Visibility should be unimpeded. They should be well and clearly signposted.
弯度和坡度不可避免时,要尽可能平缓；能见度要好；路标设置完备醒目；
Yes. The visibility was excellent all the way.
能够。一路上能见度极好。
An aspiration psychrometer could destroy a delicate moisture balance.
抽吸式干湿球温度计能够破坏细微的水分平衡。
Local Ultimate Strength and Reliability Study of Deep Water Platform;
深水浮式平台局部承载能力及可靠度研究
The Relationship Analysis of City Innovation Capability and City Informatization;
城市创新能力与城市信息化水平测度研究
Analyzing the Relation of Competitive Times of Speed Skating and the Capacitive Level of Athletes;
速度滑冰竞赛次数与运动员体能水平关系分析
The performance of MFP localization with a horizontal line array at different depths in shallow water
浅海中不同深度水平阵的匹配场定位性能