Before storm to identify, the radar volume scan data will be pretreatment by mid-filtering, which can smooth data and filter out some clutter noise.
在进行风暴识别和水平风场反演之前，对雷达体扫描数据作了中值滤波预处理，平滑数据，滤除一些杂乱的数据点。
Every time you open your web browser, your brain must filter out that noise. Your attention and focus have to push past this clutter.
每次你打开你的浏览器，你的头脑都必须滤掉这些杂音，你的注意力和焦点都得首先压制这些混乱。
The world of stresses and worries and errands and projects and noise that we must all endure inflicts upon us a mind full of clutter and chaos.
我们把这个世界的压力、困扰、琐事、工作和嘈杂照单全收，却被自己混乱不堪的思绪苦苦折磨。
In a realistic radar detection scenario, the disturbance power generated by thermal noise and clutter is unknown.
在实际的雷达检测环境中，杂波、热噪声等产生的干扰功率通常是未知的。
But the signal environment that includes external noise, different kinds of clutter and interference will significantly limit the detection performance and system capability.
但是，包含外部噪声、各种不同杂波和干扰的信号环境将大大限制探测性能和系统能力。
In the thesis, the video echo of the airborne PD radar was simulated. The simulated echoes include the signals of the target, the ground clutter and the noise.
本文研究的雷达视频回波信号模拟与仿真是针对机载下视脉冲多普勒雷达，包括目标信号、地杂波信号和噪声信号的模拟与仿真。
The clutter is predicted exactly and subtracted from the input signal by RLS adaptive filter, leaving components of the target signal in the residual noise.
通过RLS自适应滤波器，背景杂波分量被准确地预测并从输入信号中去除，从而只剩下目标信号与残留噪声。
Correlated random series is the mainly tool for describing the property of random noise, clutter and jamming, which is widely used in satellite communications, normal radar and spaceborne radar.
相关随机序列是描述随机噪声、杂波和干扰的主要工具，在卫星通信、常规雷达及星载雷达中有着重要应用。
This paper also studies the statistics characteristic of signal, clutter and noise after the system disposal, and generates target data and detecting background noise using the simulated system.
研究了信号及杂波、噪声在信号处理之后的统计特性，并通过仿真系统产生了目标回波数据及检测背景噪声。
In this paper, wavelet is used to erase speckle noise in radar PPI, and the principle of morphology is used for building structure element to filter off the speckle noise and clutter.
提出了利用小波来去除雷达平面位置图像(PPI)的散点噪声，然后利用形态学原理构造目标结构元来滤除斑点噪声和杂波。
The fundamental method used to prevent electromagnetic noise is obtained through analyzing the birth and transmission of electromagnetic clutter interference and some related cases.
分析电磁杂波干扰的产生、传输过程极其相关事例，可以得出防止杂波干扰的基本方法。
Also, the sources and the methods of video echo signal, clutter and noise are introduced.
阐述了视频回波信号、杂波及噪声的产生依据及方法。
After correlation detection step, noise pixels in the image sequences are almost suppressed, and only target pixels and a few clutter pixels can pass the detection threshold.
经过相关检测后，图像序列中的噪声几乎完全被门限所抑制，只有极少数噪声像素、全部目标像素和一小部分杂波像素可以通过相关检测门限。
Sea clutter is the backscatter from fluctuant sea surface. Sea clutter is the major noise interference of seaborne radar.
海杂波指雷达波束照射到海面上后引起的后向散射杂波，是海防预警雷达的主要噪声干扰。
This paper realize the radar echo signal analysis and modeling from three aspects: contain the target echo, sea clutter, rain clutter and noise.
着重从目标回波、海杂波、噪声三个方面对雷达回波信号进行了分析和建模。
Firstly, a background estimation method based on small window and two dimension median filter is presented after detail analysis of the model of small infrared target, noise and clutter.
首先分析了红外小目标、噪声及其杂波特性，提出了用小窗口的二维中值滤波进行背景估计；
According to the imaging difference of target, background clutter and noise, a moving small target detection method based on spacial high-pass filtering and N-frame track accumulating is presented.
根据目标、背景干扰和噪声在红外序列图像中的差异，提出了一种基于空间高通滤波和时间域上N帧轨迹积累的运动小目标检测方法。
Because there is speckle noise in SAR image and the background clutter of water is usually very complex, weak target detection is a big challenge for conventional methods.
SAR图像存在相干噪声以及水面背景杂波的复杂性，传统方法对于弱目标检测存在困难。
The experimental result shows that modified algorithm can filtrate effectively the noise and the clutter from the images.
试验表明改进后的算法具有较好噪声、杂波抑制性能。
By comparing the effect between pre-and post clutter reduction, the clutter reduction method increases the signal-to-noise ratio (SNR) of the radar images and improves the detection performance.
从比较结果可以看出，采用该方法抑制这类杂波的效果较明显，通过杂波抑制可以获得更好的图像质量。
The results show that when the millimeter wave radar has the short-distance detection, signal-to-clutter ratio is more than signal-to-noise ratio. So rainfall is an important impact factor.
结果表明：在毫米波雷达近距离探测时，信杂比大于信噪比，雨杂波是重要的影响因素。
The results show that when the millimeter wave radar has the short-distance detection, signal-to-clutter ratio is more than signal-to-noise ratio. So rainfall is an important impact factor.
结果表明：在毫米波雷达近距离探测时，信杂比大于信噪比，雨杂波是重要的影响因素。
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