A method of FM noise measurement is introduced.

分析了一种微波源调频噪声测量方法的原理。

Aircraft ground support equipment - General requirements - Part 4: noise measurement methods and reduction.

飞行器地面支持设备。一般要求。第4部分：噪声测量方法和噪声降低。

This paper describes some methods, steps and attentions using a spectrum analyzer in phase noise measurement.

本文叙述了用频谱分析仪测量相位噪声的方法，步骤和应注意的问题。

The NA-37 system is designed based on long-term experience and technology of Rion in noise measurement field.

在北美- 37系统设计基于长期的经验和里翁噪声测量技术领域。

In addition, the noise measurement system and method are discussed in the paper and some Suggestions are given.

另外，水文对噪声测量系统和测试方法进行了讨论，并提出了一些建议。

This paper reports the results of temperature rise tests, noise measurement and energy consumption calculations.

报告了温升试验、噪声测定和能耗计算的结果。

In this paper, a new variance used in the phase noise measurement, called deformed high difference variance, is presented.

本文提出一种用于相位噪声测量的新型方差——变形高阶差分方差，其传递函数具有无旁瓣、谐波少等优点。

The influence of wind velocity on noise measurement of sound level has been introduced and the permitted wind velocity has been determined.

介绍了风速对噪声声级测量的影响，确定了噪声测量的风速允许值。

The noise components estimation of semiconductors is the precondition of reliability screening of semiconductor devices using noise measurement.

半导体的噪声成分估计是利用噪声进行器件可靠性筛选的前提条件。

By analogy with the method of gunpoint noise measurement. reasonable indexes for assessing the size and intensity of gunpoint flash are put forward.

类比于枪口噪声测试方法，较科学地提出了评价枪口火焰强弱的评价指标。

The comparison method in phase noise measurement system is introduced by means of the advanced way in interlaboratory comparison and proficiency testing.

通过采用国际上先进的实验室比对和能力验证方法，提出了相位噪声测试系统的比对方案。

Its core is a microcomputer in which a data acquisition card is installed. The system can perform noise measurement by using hardware resources of computer.

该系统以声级计和微机为核心，装上由信号调理和模数转换两部分组成的数据采集卡，完成对风机噪声的测量。

In this paper, the definition and the field of application of noise resistance for the electronic noise measurement in communication testing system are discussed.

本文探讨噪声电阻的定义方法及其在通讯检测系统中的应用范围和局限性。

A new method of low intensity radiated noise measurement is shown using acoustic combined sensor and combined signal processing with pressure and particle velocity.

本文研究运用组合传感器和声压、振速联合信号处理技术进行低噪声通过特性的测量。

An example for measuring the conversion loss and noise temperature of mixers in millimeter wave band by using the noise measurement method is discussed in this paper.

讨论了一种利用噪声测量的方法来确定毫米波段混频器的变频损耗和噪声温度的一个实例。

The bearing characteristics of the magnetic suspension rotor system were validated based on the result of the analyse of the vibration and the noise measurement experiment.

在振动与噪声测量实验基础之上分析总结了磁悬浮转子系统振动和噪声的分布情况，从而进一步验证了磁悬浮转子系统的支承特性。

Sound-level meter by its simple, convenient, the cost is low, the precision higher a series of merits, become one of aircraft noise measurement aspect main metering equipment.

声级计以其简单，方便，成本低，精度高等一系列优点，成为航空器噪音测量方面主要的测量仪器之一。

The courses of the responses to irradiation in both traditional measurement and low-frequency noise measurement are analyzed. The interpretations are also worked out in the meantime.

分析了传统电学参量和低频噪声参量对辐照的响应过程，解释了它们的表征原理。

By using the basic method of noise measurement, traffic noise values were measured, and different types of vehicle flow data were gained in a certain section of the Southwest Road in Dalian.

运用噪声测量基本方法，测量了大连市西南路某路段交通噪声值并统计出不同类型的机动车流量数据。

A new method was advanced for calculating 3-d noise expediently. The method has the practical merit for 3-d noise measurement and quality evaluation of discrete low-light-level imaging system.

为了方便地计算三维噪声，提出了一种新的三维噪声计算方法，该方法对离散型微光成像系统三维噪声测量和质量评价具有十分重要的实用价值。

On the research of traditional phase noise measurement methods, a new phase processing and phase noise measurement method based on Equivalent phase Comparison Frequency is proposed in this paper.

本论文在对传统相位噪声测量方法研究的基础上，提出了基于等效鉴相频率的相位处理和相位噪声的测量。

This article is concentrated on data processing, mainly including spectrum estimation and error compensation, and system software developing which applied in a kind of phase noise measurement system.

本文重点介绍了应用于一种相噪测试系统中的频谱估计及误差校正等数据处理方法，以及该系统相噪测试主机系统软件的研制。

Measurement of the signal is usually vibration and noise, temperature, pressure, current, voltage, etc to one or more of the signal.

测量的信号通常是振动、噪声、温度、压力、电流、电压等信号中的一种或几种。

The ultimate limit of resolution in an electrical measurement is defined by Johnson or thermal noise.

在电子测量中分辨率的最终极限是由约翰逊噪声或者热噪声来决定的。

The fundamental limit to measurement is Johnson noise in the source resistance.

对测量的基本限制是源电阻中的约翰逊噪声。

Meanwhile, to suppress external interference and measurement noise, a filter is added into control system.

同时，为抑制系统外部干扰和测量噪声，在控制系统中加入了滤波环节。

Johnson noise is uniformly distributed over a wide frequency range, so reducing the noise bandwidth effectively decreases the noise in the measurement.

约翰逊噪声在很宽的频率范围内呈均匀分布，所以减小噪声带宽能够有效地降低测量中的噪声。

When the results of multiple hearing tests were averaged, more than half of the apparent noise induced hearing losses disappeared, a finding consistent with measurement error.

当多组听力测试结果平均下来，超过一半的明显噪音性听力损失(现象)消失了，这一发现验证了(前述的)测量误差的存在。

Of course, real world structures have all kinds of measurement problems with respect to noise, linearity, time variability, etc.

当然，真实结构具有关于噪声、线性、时变等等方面的各种测量问题。