Visibility相关论文
激光雷达方程求解时将后向散射消光对数比k作为假设值,推导了k与波长指数、探测波长及气溶胶消光系数之间的关系式,提出了一种确定......
气溶胶在大气光学、大气辐射、大气化学、大气污染和云物理学等领域具有重要研究意义, 是大气监测的重要要素。为了更好地研究大气......
在军事领域, 能见度是飞机和舰船安全航行、雷达、光电测量装备定标、军事目标打击等军事行动的重要依据之一。从能见度的定义入手......
当光源为高斯型光谱，非平衡光路中考虑介质色散时求出双光束干涉的光强度解析解。分析了干涉条纹可见度和可见范围与介质的厚度、色......
利用数值仿真和实验验证方法,解释用线光源作为光源的菲涅耳双棱镜干涉实验中,狭缝必须与双棱镜棱脊平行才能观察到清晰干涉条纹的......
在光子计数模式的激光雷达应用中,回波信号的动态范围大。激光雷达的远场回波信号处于探测器的线性输出区间,无需进行校准;近场信......
为了研究雾对自由空间量子通信的影响,根据雾滴谱分布函数和消光系数,研究了雾的能见度及传输距离对链路衰减、量子通信信道容量、......
运用米氏散射理论，分析了单个粒子散射特性，建立了1.06 μm激光近地面大气传输散射模型.通过该模型的仿真计算，得到了不同离轴距离条......
2017年11月1日~2018年5月15日在济南市泉城广场空气质量监测点位开展微脉冲激光雷达水平探测，实验期间能见度、常规污染物浓度以及P......
为解决光纤干涉仪输出条纹可见度受单模光纤双折射效应引起的偏振衰落影响,提出一种消除偏振衰落的简单方法,该方法可同时实现光纤......
基于一阶玻恩近似条件，分别得到了标量和电磁平面波经过准均匀(QH)介质散射的二阶强度相关场对比度解析式。解析结果显示，对于标量平......
激光能见度仪用于测量大气能见度,激光回波信号时间测量误差是影响能见度测量精度的重要因素,采用多模式高分辨率时间数字转换器解......
利用自行研制的大气细粒子谱分析仪、振荡天平、大气能见度仪和气象参数仪,对2008年北京奥运期间的主场馆区域大气质量状况进行了......
A novel hybrid instrument of contact and non-contact measurement with large range is developed, and both measure-ment sy......
A novel scalable architecture for coherent beam combining with hybrid phase control involving passive phasing and active......
中北大學 【Abstract】The cultural turn， started from the end of 1980s， pushed the translation study to a new orientatio......
文章从“虚实化意”的视角来探讨文学翻译问题。“虚化”与“实化”是事物的一对矛盾现象,但它们可以互相转化,以适应上下文的要求......
Fire simulations and sensors are widely used in building fires,various data such as temperature,CO and CO2 concentration......
Tests involving a large number of test cases and test scenarios are always time- and effort- intensive, and use ad hoc a......
This paper describes a routing algorithm for risk-scanning agents using ant colony algorithm in P2P(peer-to peer) networ......
Accessibility is a kind of important design feature of products, and accessibility analysis has been acknowledged as a p......
The aim of this work is to investigate the influence of rainy weather on traffic accidents of a freeway. The micro-scale......
华北平原大气污染与低能见度状况一直是人们关切的问题.本文通过分析2014-2017年PM2.5化学成分的浓度和消光效果,研究了华北平原典......
Humidity and PM2.5 composition determine atmospheric light extinction in the arid region of northwes
Atmospheric visibility can directly reflect the air quality.In this study,we measured water-soluble ions(WSIs),organic a......
As one of the four global satellite navigation systems,Compass not only enhances satellite visibility and availability f......
Aerosols in the atmosphere not only degrade visibility, but are also detrimental to human health and transportation. In ......
利用全球25个气象站点的实测水平气象能见度和同步MODIS气溶胶光学厚度数据,对影响Peter-son模型精度的参数——气溶胶标高进行反......
Aerosol scattering coefficients and major chemical compositions of fine particles observed at a rura
During November-December 2010 aerosol scattering coefficients were monitored using a single-waved (525 nm) Nephelometer ......
Simultaneous and continuous measurements of visibility,meteorological parameters and air pollutants were carried out at ......
基于1958~2015年郑州市太阳辐射和常规气象因子观测资料,分析该地区地面太阳辐射变化特征及其影响因素。结果表明,近60 a来郑州市......
文中对半导体激光器进行调制,用分束平片将被调制的激光束分成透射光束和反射光束,透射光束作为探测光束,反射光束作为参考光束。......
为了研究霾环境下应用紫外光通信的系统特性,研究了霾粒子的物理特性及谱分布特性,利用散射理论分析了霾粒子在日盲紫外光波段的散......
COMPREHENSIVE ANALYSIS OF THE MACRO- AND MICRO-PHYSICAL CHARACTERISTICS OF DENSE FOG IN THE AREA SOU
为探究吕家坨井田地质构造格局,根据钻孔勘探资料,采用分形理论和趋势面分析方法,研究了井田7......
A Study on the Relationship Among Visibility, Atmospheric Suspended Particulate Concentration, and M
为探究吕家坨井田地质构造格局,根据钻孔勘探资料,采用分形理论和趋势面分析方法,研究了井田7......
Comparison of Visibility Measurements over Horizontal Path by Micro-pulsed Lidar and Visibility Mete
为探究吕家坨井田地质构造格局,根据钻孔勘探资料,采用分形理论和趋势面分析方法,研究了井田7......
为探究吕家坨井田地质构造格局,根据钻孔勘探资料,采用分形理论和趋势面分析方法,研究了井田7......
为探究吕家坨井田地质构造格局,根据钻孔勘探资料,采用分形理论和趋势面分析方法,研究了井田7......
为探究吕家坨井田地质构造格局,根据钻孔勘探资料,采用分形理论和趋势面分析方法,研究了井田7......
为探究吕家坨井田地质构造格局,根据钻孔勘探资料,采用分形理论和趋势面分析方法,研究了井田7......
This paper considers the problem of planning the motion of a searcher in a polygonal region to eventually "see" an intru......
In this paper,we consider the problem of clustering Web images by mining correlations between images and their correspon......
A 3D visible evaluation of landslide risk degree under integration of GIS and artificial intelligenc
Artificial intelligence has been used to obtain background factors (basic environmental factors) from landslide speciali......
Prospective evaluation of small bowel preparation with bisacodyl and sodium phosphate for capsule en
AIM: To determine the effect of Prepacol?, a combination of sodium phosphate and bisacodyl, on transit and quality of ca......
The pollution of particulate matter less than 2.5 μm (PM2.5) is a serious environmental problem in Beijing. The annual ......
COMPREHENSIVE ANALYSIS OF THE MACRO- AND MICRO-PHYSICAL CHARACTERISTICS OF DENSE FOG IN THE AREA SOU
Using the composite field observational data collected in the area south of the Nanling Mts. and numerical modeling, the......
Performance Analysis for Regional Satellite Positioning System Based upon GEO/HEO Hybrid Constellati
Scheme of positioning constellation would greatly influence the positioning performance. In this paper, a GEO/HEO hybrid......
Comparison of Visibility Measurements over Horizontal Path by Micro-pulsed Lidar and Visibility Mete
As a powerful tool to scan the atmosphere, the 1idar can derive visibility values by directly collecting the backscatter......
Using the observed data from 184 stations over the Yunnan-Guizhou Plateau (YGP) from 1961 to 2005, the long-term trends ......
Aerosol scattering coefficients and major chemical compositions of fine particles observed at a rura
During November-December 2010 aerosol scattering coefficients were monitored using a single-waved (525 nm) Nephelometer ......
