查询词典 brightness temperature

Maize canopy ; directional brightness temperature; field measurement ; thermal camera mounted on crane platform

玉米冠层；方向亮温；田间测量；基于起重机平台的热像仪观测系统

The equation is a Fredholm integral equation of the first kind which is extremely unstable. The solution of this equation is the brightness temperature of target.

本文建立天线模型得到天线温度方程，它是病态的第一类Fredholm积分方程，求解目标亮度温度也即求解这个积分方程。

The model of multi-layers dense media is developed for numerical simulation of polarized brightness temperature from layering lunar soil and rock. Numerical simulations show the functional dependence of relevant physical parameters.

提出模拟的亮温和多层月壤月岩的多层密集粒子介质辐射传输模型为理论观测，反演月球表面参数，讨论了月壤厚度等参数反演可予以实施的方法。

And it can be regarded as a helpful attempt to improve the physical algorithm applied in China with which the rainfall intensity and hydrometeor structures can be retrieved from brightness temperature.

综上，研究所确立的物理算法是成功的，可作为发展适用于我国的由微波亮温反演地面雨强和水凝物廓线的物理方法一次有益尝试。

The results of cloud image analysis show that the TBB is lower than 230K (-44℃) when the convection grows most prosperously and the area with the brightness temperature difference of lower than -4℃ corresponds to the place where is most affected by the strong thunderstorm. The center of low value with T≤-7℃ corresponds to the strong echo of radar. There is a good correspondence between the strong convective weather and maximum gradient of TBB, which distributes along the moving cloud cluster. The moving path of strong storm is similar to that of the maximum positive gradient of T.

FY-2C卫星云图定量分析结果表明这次飑线过程对流最旺盛期TBB低于230K(-44℃)；长波红外分裂窗双谱组合T≤-4的低值区与强风暴天气影响区域相对应，T≤-7低值中心与强雷达回波区相对应；强对流天气区域与分布在沿对流云团前进方向的TBB梯度最大区域有很好的对应关系，强风暴天气发生区的移动路径与T正梯度最大区域的移动路径相似。

However,if we use the conventional technology,once the spatial resolution reaches a certain level,the small resolution cell will limit the sensitivity of the brightness temperature measurement due to very short integration time at each of the cell.In this paper,a new technology,so called interferometric radiometry or synthetic aperture radiometry,is summarized.

但是传统的微波辐射成像技术在分辨率达到一定高度时，由于波束在每个分辨像元的驻留时间越来越短，以致对辐射亮温的测量分辨率产生了影响，这就使得采用传统扫描成像技术来提高空间分辨率的技术路径成为不可能。

Directional Brightness Temperature of 3D row crop canopy generated by the Clumped Architecture Model of Plants were calculated efficiently and accurately based on the Persistence of Vision Raytracer software. Clumping index, average leaf angle and leaf area index are main parameters of CLAMP model. By analyzing the sensitivity of these parameters to DBT, the changing rules of DBT were found.

利用POV-ray光线追踪方法，对植被真实结构模型生成的复杂行播场景下的方向亮温进行快速演算，并针对CLAMP模型中集聚指数，平均叶倾角和叶面积指数，对冠层方向亮温的影响做敏感性分析，得到在不同参数输入条件下DBT的一些规律。

The GPI method assumes that the cloud with brightness temperature below 235K would be rainy, then the area of rain is equal to the coverage of cold cloud below 235K. It may be suitable for most part of China at tropic and subtropic area. But for northern part and plateau area of China, the GPI overestimates precipitation due to lack of enough water vapor.

4GPI方法假定云顶亮温低于235K时，将产生降水，降水区的面积就等于低于235K亮温覆盖的区域，这在热带和中纬度大部分地区可能是适用的，但对我国北方干旱地区以及高原地区，则存在明显的高估，表明有云不一定会有雨，为了修正西北部降水的系统性高估，引入相对湿度修正因子，即在一定温度条件下，加上一定的湿度条件，才能形成降水。

The MODTRAN3.7 is used to calculate the top of atmosphere radiance and brightness temperature using the water surface temperatures measured by auto hydrometeorological buoy system in Qinghai Lake and atmospheric profiles of NCEP reanalyzed data.

利用青海湖自动浮标系统测得的水表温度和NCEP再分析资料的大气廓线，利用MODTRAN3.7计算大气层顶辐亮度和亮温，获得FY-2B热红外通道绝对辐射定标系数，从而计算等效黑体温度。

Because thedetecting of the metal object is important in both military and civil applications, wefocused on the aim and do lots of measurement of the radiometric characteristic ofseveral objects correlating to the metal detecting and got the datum. We also completedthe inversion algorithm of retrieving the brightness temperature from the measureddatum.2 The radiometer is the apparatus of incepting the MMW radialization and is the key partof all passive MMW detecting and imaging system. Our emphasis of radiometerresearch was on a kind of AC radiometer, we discussed its principium, composing andthe recovery of its distorted output signal. Finally we gave out the design of the ACradiometer.3 The focal plane system is the main passive MMW detecting and imaging system atpresent.

由于对金属目标的探测在军民应用两方面都很重要，因此文中围绕着对金属目标探测这一中心，对几种相关物体的毫米波辐射特性进行了大量测量实验，获得了相关数据，并进行了亮温反演，给出了计算结果。2毫米波辐射计是接收物体毫米波辐射的高灵敏度接收机，是所有被动毫米波探测成像应用的核心部件，因此文中对毫米波辐射计进行了相关研究，重点研究了用于扫描探测的交流辐射计的原理、构成及其失真信号的补偿问题，并完成了一种交流辐射计的系统设计。3毫米波焦平面系统是当前被动毫米波探测成像的主流系统。

They weren't aggressive, but I yelled and threw a rock in their direction to get them off the trail and away from me, just in case.

他们没有侵略性，但我大喊，并在他们的方向扔石头让他们过的线索，远离我，以防万一。

In slot 2 in your bag put wrapping paper, quantity does not matter in this case.

在你的书包里槽2把包装纸、数量无关紧要。