查询词典 surface noise

For certificating the efficiency of this design method, Gaussian weighted median filters are adopted to remove well known channel noise, i.e., pepper and salt noise and uniform distributed impulse noise, in this framework.

该设计方法可以推广应用到其它具有适应性的去噪滤波器之上，使它们对不同类型、不同强度的信道噪声进行更柔性化的处理。

The algorithm demarcates impulse noise to separate the two kinds of noise in each part by noise detection.

采用自适应中值滤波算法滤除脉冲噪声，有效地克服了中值滤波的不足。

This research main of research the content aim at the system noise of the orbit conveyance namely it become grind to judge because of carrying on, and through analysis valuation, the draw-up derails the prevention and cure counterplan of orbit noise, and to part prevention and cure the result measurement of counterplan do an initial analysis ratio to, distinguish a counterplan and become because of theoretically and the result ratio on the actual situation to with provide the best project of noise prevention and cure.

本研究主要的研究内容即针对轨道运输系统噪音之成因进行研判，并经分析评估，拟定出轨轨道噪音的防治对策，并对部分防治对策的结果量测做一初步分析比对，厘清对策与成因在理论上及实务上之成效比对，以提供噪音防治之最佳方案。

The communication technology used in GPS is a direct sequence spread spectrum structure. Using C/A Gold codes, it can cope with wideband noise (such as thermal noise and channel noise) or low power narrowband interference by its processing gain. But DS-SS can not reject high power narrowband interference completely. So we need an anti-jamming filter to reject the narrowband interference by using adaptive filters prior to dispreading.

它是利用直接展频的一种架构，因此，此系统能藉由C/A码的展频处理增益，来对付ㄧ些宽频的干扰或是低能量的窄频干扰，但是它无法应付高能量的窄频干扰，因此我们需要一个抗干扰滤波器在解展频之前来先将干扰去除。

AR model is applied to identify the noise source for enigne. Through the results of noise signal process, it shows that it is practical and credible to use AR model to study engine noise. Through the theoretical analysis, according to the specific engine structure, the SEA equation is formulized. The method of SEA sensitivity is brought forward on the basis of the sound power function.

从理论分析入手，结合具体的发动机产品结构，建立了结构噪声分析的统计能量方程，提出了基于声功率函数的统计能量灵敏度分析方法，把发动机的外在表现和内在因素直接联系起来，分析了系统主要参数对系统声功率的影响程度，得出了一些实用性的定性结论。

In order to enhance the image with better anti-noise ability,this paper proposes a image pre-processing algorithm based on lateral inhibition and adaptive filter,which can not only outstands the image'outline,but also eliminates the noise by adaptively changing the model parameters accordingly to the local image's mean,variance and the noise variance.

为了既能增强图像，又具有较好抗噪性能，提出一种基于侧抑制网络和自适应滤波相结合的图像预处理算法，不仅突出了图像的轮廓，而且能根据图像的局部均值和方差以及噪声方差的不同，自适应地改变模型的参数来消除噪声。

This article introduces the structure, principles and performance of several low-noise gear pumps, analyses that gear pump is the noise source in the new internal combustion forklift and battery forklift, provides some methods which can reduce the gear pump noise, and establishes the matching relation between gear modulus and pressure angle of the gear pump, which is applied to the new internal combustion forklift and forklift battery.

摘 要：本文介绍几种低噪声齿轮泵的结构、原理和性能，分析了新型内燃叉车和电瓶叉车中齿轮泵是噪声源，给出了可降低齿轮泵噪声的方法，建立了该种齿轮泵的齿轮摸数和压力角匹配关系，并在某新型内燃叉车和电瓶叉车上得到应用。

Based on these theories, this paper discusses the method of the design of the low noise amplifier integrated active microstrip patch antenna, which considers the low noise amplifier and the microstrip antenna and takes both mutual matching into account. The size of the active integrated antenna and the circuit configuration of the low noise amplifier are obtained at the specified operation frequency.

根据这些理论，把低噪声放大器和微带天线结合起来，并考虑两者之间的匹配，讨论了一种集成低噪声放大器的有源微带贴片天线的设计，得到了在给定工作频率下的有源集成天线尺寸和低噪声放大器的电路结构。

Noise level tests shall be carried out in an anechoic room with background noise 20dB or less. Noise shall

噪音的测试是在背景噪音在20dB以下的消音室中进行的，在离机芯前面10cm的位置测

That is to say, the medicine effect of Astragals was longer and more stable than that of Rhodiola not only in low but also in high noise intensity. The medicine effect of Rhodiola was more stable in low noise intensity, but weaker in high noise intensity.

也就是说，黄芪的药效无论是在高强度噪声还是在低强度噪声下都比较持久、稳定，而红景天在低强度噪声下药效比较持久，在高噪声强度下的药效不如低强度。

Researches reveal that students who suffer from corporal punishment tend to resort to violence in their future life.

研究表明遭受过肉体惩罚的孩子倾向于在他们今后的人生中使用暴力。

Total sugar of sarcocarp and chlorophyll of pericarp increased firstly, and then decreased afterward along with altitude; Titratable acidity, ascorbicacid and anthocyanin of pericarp were increased along with altitude; The content of protein increased firstly and decreased afterward along with altitude; Carotenoid of pericarp were decreased along with altitude.

果肉总糖和果皮叶绿素含量随海拔高度升高先升高后降低；可滴定酸、维生素C和果皮花青苷含量均随海拔升高而升高；蛋白质在1720m处最大，1420m处最小；果皮类胡萝卜素随海拔升高而降低。