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1)  backscattering enhancement
后向散射增强
1.
To investigate the backscattering enhancement effect of fractal rough surface,the method of moment associated with the tapering incident wave is adopted.
针对粗糙表面散射实验中的后向散射增强现象,采用锥形波束入射的矩量法定量计算了分形粗糙表面的后向散射增强效应,研究了波形参数和表面尺寸的匹配问题,分析了不同入射角下散射增强的角宽度,比较了不同分维数和表面模型下散射增强的幅值。
2)  backscattering ['bæk,skætəriŋ]
后向散射
1.
Influence of bubble concentration on lidar backscattering characteristic;
气泡浓度对海洋激光雷达后向散射特性的影响
2.
Study of bandwidth for suppressing seawater backscattering based on frequency filtering;
频域滤波抑制海水后向散射的带宽研究
3.
The light backscattering properties study of bubble film using Monte Carlo simulation;
气泡幕后向散射光信号特性的蒙特卡罗方法研究
3)  Backward scattering
后向散射
1.
This article introduces the measuring and the calculation of forward and backward scattering in some range of surface roughness and waviness of laser gyro mirror substrate and presents the effect of surface roughness and waviness on scattering.
研究了激光陀螺反射镜基片表面粗糙度和波度前、后向散射的测量计算及其对散射的影响。
2.
This paper is based on long-term experimental data by backward scattering lidar for visibility.
采用自行研制的后向散射式能见度测量仪进行能见度测试,基于长期的实验数据对多种大气条件下的测量误差进行分析。
3.
Basing on laser backward scattering method,the backward scattering signal of digital receiver is measured in the laser′s transmission.
文章采用后向散射能见度测量法,通过测量激光在大气传输过程中产生的后向散射信号,计算大气的消光系数,从而得出大气能见度值,从硬件和软件上设计,并进行了实验。
4)  Back scattering
后向散射
1.
Principle of the determination system for 180°back scattering characteristic of the turbid media;
混浊介质180°后向散射特性参数测定系统的原理
2.
Aiming the application to torpedo wake homing, a new method is presented to detect warships based on the laser back scattering characteristic of wake bubbles.
从应用于尾流自导角度出发,在实验基础上提出了一种利用尾流中气泡对激光的后向散射光特性探测舰船的新方法。
3.
After the spectral analysis of back scattering we can identify the bubbles by the differences between bubbles and water.
在实验的基础上提出了一种用激光后向散射信号的幅度谱进行探测和识别气泡的新途径。
5)  backscatter
后向散射
1.
Research of backscattered laser energy within the energy measurement for large caliber high energy lasers;
大口径高能量激光测量中后向散射能量研究
2.
To obtain the resolution of a rangegated imaging system in the laboratory, the optical backscatter of seawater arriving at a detector is calculated.
为了实现在室内测试距离选通成像系统的分辨力,建立了后向散射光模型。
3.
Taking the middle and north regions of Jiangsu Province as a test site,temporal changes of VV polarization backscatter for the rice paddy in this area was analyzed.
通过分析和比较稻田与其他地物的VV极化后向散射时域变化特征,选择合适的阈值和条件,利用阈值分类算法从多时相宽幅模式影像中提取稻田,并结合地面水稻样方,对稻田识别结果进行验证。
6)  back-scattering
后向散射
1.
Design of optical back-scattering flue-dust on-line metrical prototype;
光后向散射式烟尘在线测量样机的研制
2.
Back-scattering model and experiment of laser illuminating;
激光照明的大气后向散射理论模拟和试验研究
3.
Using these data and the formula of attenuation coefficient educing from the back-scattering lidar equation the attenuation coefficient of seawater could be calculated.
提出了一种基于后向散射式激光雷达方程的海水衰减系数现场快速测量方法。
补充资料:表面增强拉曼散射
分子式:
CAS号:

性质:化合物分子吸附于具有粗糙化的金属表面,会出现巨大的拉曼散射现象,这就是表面增强拉曼散射。其表面增强因子可达104~107。表面增强拉曼散射产生机理尚无完善的模型。多数物理模型认为是源于金属表面区域电场的增强;化学类模型则归因于金属表面的某些特殊位置和散射过程同电荷转移态的共振。表面增强活性载体和具有表面增强效应的物质包括金属电极、金属溶胶、模拟银溶胶、岛状膜、冷沉积膜等。

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