本文提出了抑制大气噪声的强度调制激光束探测法。
In this paper, the soundex using laser bean modulated in intensity is advanced to suppress the atmospheric noise.
要得到真正的随机数，计算机不得不依赖外部资源，比如测量大气噪声的设备。
To get true random numbers, computers have to rely on external sources, such as devices to measure atmospheric noise.
真随机数发生器的熵源通常来自于真实的物理世界，如热噪声，大气噪声，放射性衰减甚至掷硬币。
TRNGs are usually based on physical phenomena such as thermal noise, atmospheric noise, radioactive decay and even coin-tossing.
就特定海域分析和计算了大气噪声的功率谱密度，同时计算了在保证较高测量精度条件下所需要的最低场强，继而给出了无线电导航系统所需辐射功率的计算方法。
Radiant power of atmospheric radio noise and electric field intensity is computed precisely for given maritime space, and then the computational way of radiant power is given.
比如，新生恒星是异常活跃的，它们不断变化的外层大气至少会导致背景噪声。
For one, nascent stars are incredibly active and their changing outer atmospheres can at the very least make for background noise.
但由于小城镇自身的规模偏小，产业结构不合理等诸多原因，造成的水、大气、噪声等污染依然存在。
Due to the small scale of small towns and unreasonable industrial structure, there are pollutions of water, gas and noise.
环境污染包括大气污染，水污染，垃圾废弃物污染，土壤污染和噪声污染。
The pollution of the environment includes the air pollution, water pollution, garbage wastes contaminative, the soil pollution is contaminative with the noise pollution.
分析了低空目标声源的产生机理、目标辐射噪声在大气中的传播特性以及影响其传播的几个主要因素。
The mechanism of the produce of target noise, its transmission characteristics in air and several main factors that influence the sound transmission are analyzed.
随机噪声，如接收器中的碎啪声或电视屏幕上的光斑，是由信号的大气干扰造成的。
Random noise, such as crackling in a receiver or specks on a television screen, produced by atmospheric disturbance of the signal.
这种双通道比值指数和NDVI一样具有衰减仪器噪声和抵消常规大气影响的优点。
Like NDVI, This dual-channel ratio index has the advantages that could attenuate conventional equipment noise and atmospheric effects.
本文首先采用灰色系统评价方法、空气污染综合指数等方法对中国西部河谷型城市大气、地表水、噪声环境质量进行了客观评价。
The grey system assessment method, air pollution integrated index are applied to evaluate the atmosphere, surface water, noise environmental quality of valley cities in western China.
介绍了福建地区大气无线电噪声测量结果。
The measured results of the atmospheric radio noise in Fujian regions is also described.
城市交通污染已经上升为我国城市大气和噪声污染的主要污染源之一。
Urban traffic pollution has risen to one of the major sources of China's urban air and noise pollution.
城市环境治理包括城市大气污染治理、城市水污染治理、城市固体废物污染治理、城市噪声污染治理等四类。
Urban environment treatment includes urban air pollution treatment, urban water pollution treatment, urban solid waste pollution treatment and urban noise pollution treatment, etc.
大气湍流引起的相位噪声会严重地影响系统的性能，而自适应光学补偿可使问题得到很好的解决。
System performance is influenced seriously by the phase disturbance caused by atmospheric turbulence and the problem may be solved by using the adaptive optics compensation.
第三部分，根据历年环境监测资料对芜湖市城市边缘区的大气、水、土壤和噪声环境进行评价。
Using previous references of environmental monitoring, part 3 estimates the environmental quality of atmosphere, water, soil and noise in the fringe of Wuhu City.
实际星地光通信系统的发射光束为高斯型的情况下，跟瞄误差和大气闪烁是星地激光链路中的主要信道噪声源。
The transmitter beam is Gaussian for real satellite-ground laser communication system. The pointing jitter and atmospheric scintillation are the main noise sources for satellite-ground laser link.
除了失重之外，大气成分(二氧化碳浓度)、环境噪声等级、压力水平等都不一样。
In addition to weightlessness, the atmospheric composition (CO2 levels), ambient noise levels, stress levels, etc.
研究了影响目标噪声传播的因素：空气温度、湿度、风速、风向及大气中的雨雪等。
Study on several factors influent the targets acoustic signal's transmission such as: air temperature, air humidity, wind velocity, wind direction, rain and snow.
假设大气湍流为弱起伏湍流，用高斯噪声模拟了大气湍流的影响。
The atmosphere turbulence was seen as weak fluctuation turbulence, and Gaussian noise was used to simulate influence of atmosphere turbulence on transmission of laser beam.
这就是说，在全球任何一个背景噪声较低的地点设置一个舒曼共振台站，可由这一台站纪录的舒曼共振幅度的明显变化推断全球热带大气气温的细微变化。
It means that we can diagnose subtle change of global atmosphere temperature by using Schumann resonance data recorded at any single station with low noise background.
这就是说，在全球任何一个背景噪声较低的地点设置一个舒曼共振台站，可由这一台站纪录的舒曼共振幅度的明显变化推断全球热带大气气温的细微变化。
It means that we can diagnose subtle change of global atmosphere temperature by using Schumann resonance data recorded at any single station with low noise background.
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