frequency sweeping

The key of this part is to verify that the structured singular value of a one-unknown matrix function is not equal to one . This work can be accomplished by a frequency sweeping test method .

后者的核心是判定某个以频率为变元的矩阵的结构奇异值不等于1，这一问题由频率扫描测试法解决。

In addition , in the dynamic state characteristic test of electro-hydraulic servo vale and proportional valve , frequency sweeping method is adopted to gain more ideal degree of accuracy .

在电液伺服阀、比例阀的动态特性测试中，采用了扫频法进行测试，获得了理想的准确度。

Frequency sweeping and statistics are applied in frequency characteristic test .

并在频率特性的测试中，我们用扫频法、统计法两种方法进行了测试。

A Design of Frequency Sweeping Signal Generator Based on Sawtooth Signal

基于锯齿波信号控制的扫频信号发生电路的设计

To obtain the desired structure information , a frequency sweeping method is presented .

为得到这个结构信息，在这章提出了一种频域扫描方法。

Frequency Sweeping Method for Scattering Matrix Measurement

散射矩阵的扫频测量方法

Error in the Measurements of Amplitude-Frequency Characteristics by Means of Frequency Sweeping

扫频法测量幅频特性的误差

Frequency Sweeping Interference Suppressing in DSSS System Using Chirp-Fourier Transform

DSSS系统中基于Chirp-Fourier变换的扫频干扰抑制算法

A Fast Frequency Sweeping Method for RCS of Dielectric Cylinders Computation Based on AWE Technique

AWE应用于介质柱宽带RCS频率响应的快速计算

Measurement of Ultra-Low Loss Mirrors by Cavity Ring-Down Technique with Laser Frequency Sweeping

用扫描激光频率腔衰荡对超低损耗镜片的测量

In the dynamic state characteristic test , frequency sweeping and statistic methods are used and their results are compared with 1250 frequency response analyzer .

在电液伺服阀动态测试实验中，采用了扫频法和统计法这两种不同的方法进行测试，并对实验结果与1250频响分析仪所测的结果作了对比，发现二者基本一致。

When frequency sweeping method being used properly for measuring amplitude-frequency characteristics , the analysis and estimation of errors in measurement results could be avoided .

正确使用扫频法测量幅频特性，可以避免大量测量结果中误差的分析与估算。

The amplitude-frequency characteristics measured by means of frequency sweeping are dynamic characteristics and those measured by means of point-to-point method are static characteristics .

用扫频法快速测量各种系统的幅频特性是动态特性，按逐点描绘法取得的幅频特性是静态特性。

It adopts sequential radio frequencies to drive a phase modulator to achieve synchronous frequency sweeping for both probe light and local oscillator .

它通过时序的射频信号控制相位调制器从而实现对探测光和本振光的同步扫频。

Based on a discussion of these concepts , this paper describes the methods for calculating the parameters of dynamic amplitude-frequency characteristics , which are very useful for aligning receivers and for designing frequency sweeping signal generator and spectrum analyser .

本文在阐述这些问题的基础上，介绍了动态幅频特性的参量计算方法，这对设计扫频仪、频谱分析仪、扫频接收机很有用处。

Testing method of transfer properties for systems by frequency - sweeping

系统传递特性的扫频测试方法

The frequency of sweeping varies from once to eight times daily , depending on the need in each area .

清扫次数由每日一次至八次不等，视乎个别地区的需要而定。

This platform can simulate the ray tracing for a fixed frequency or sweeping frequencies , also can calculate the group path and the covered region of rays .

当平台否实现订频或许扫频射线轨迹演示，盘算各射线群道径，覆揭区域等功能。

The study of a scheme with low frequency digital frequency - sweeping

一种数字式低频扫频方案

Principle and Practice of Testing Frequency Response of Audio System with Frequency Sweeping Method

扫频法测量音频系统频率响应的原理及实践

Accurate measurement of frequency response of high-speed optical intensity modulator using frequency sweeping method

扫频法精确测量高速光调制器频率响应

In this paper , the concept of frequency response is introduced , and the principle of testing system frequency response with frequency sweeping method is analysed . Finally , a example of testing frequency response of Audio Console using audio test instrument is given .

介绍了系统频率响应的概念，详细分析了扫频法测量系统频响的原理，最后给出了音频测试仪测量调音台单机频响曲线的实例。

This paper introduced the design and development of a virtual frequency sweeper based on DDS technology . The DDS technology and the method to design the frequency sweeping generator were illustrated .

介绍了基于DDS技术的虚拟扫频仪的硬件与软件设计，并详述了DDS技术以及用该技术实现扫频信号源的方法。