该文从原理上分析了相乘器在频率变换中的应用及过程。
This article analyses the applications and procedures in frequency transformation of multiplier from principle.
这项技术把非线性的视觉的水晶用于镭射光的频率变换。
This technology USES nonlinear optical crystals for the frequency conversion of laser light.
该电路作放大和分频时，工作稳定、同步范围宽，频率变换增益高。
Utilized as an amplifier or divider, it has good stability, wide synchronous range and high translation gain.
该文系统地讨论二极管工作在开关特性下所组成电路的频率变换的工作原理。
This paper tries to discuss the work principle of frequency transformation on the circuit where diodes work on on-off speciality.
本发明公开了一种基于光纤受激布里渊散射的微波信号频率变换方法及装置。
The present invention discloses method and apparatus of microwave signal frequency transformation based on optical fiber stimulated Brillouin scattering.
相乘器是由非线性元件组成，可以实现两个信号的相乘，完成频率变换的电路。
Multiplier is the circuit which is conformed of nonlinear elements and can make two signal multiplied so that it can implement frequency transformation.
然后采用正交数字上变频（DUC）技术进行基带信号数字域调制和频率变换。
Then, a solution based on Digital Up Converter(DUC) was proposed, which implemented the conversion of a complex digital baseband signal to a real passband signal.
对多横模全固态激光器使用正交频率变换进行了分析，计算了频率转换效率与激光发散角的关系。
The effect of multi transversal mode on quadrature frequency conversion in a solid-state laser was analyzed, and the relation between the conversion efficiency and the divergent angle was conducted.
本文在对相位噪声的概念、产生及其相关测量方法研究的基础上，设计出一种低噪声频率变换电路。
This paper presents a new type of low noise frequency conversion circuit based on the research of phase noise conception, generation as well as relativity measurement method.
本文介绍一种基于频率变换的时间放大技术，可用于正弦周期信号的相位精确测量或延迟时间测量。
This article introduces a technology of time amplifier based on frequency converter. It can be used for phase detection of sine period signal or determination of time delay.
拓宽激光输出波长的范围最常用最有效的方法之一是利用非线性晶体在相位匹配条件下的频率变换技术。
One of the most effective and feasible ways of broadening the range of the output wavelength is using frequency conversion of non-linear Crystal under the condition of phase matching.
频率合成技术，就是将一个(或多个)基准频率变换成一个(或多个)合乎质量要求的所需频率的技术。
The frequency synthesizes a technique, be become a basis frequency tra formation a (or many) conforms to a quality request of the technique of frequency needed.
本文介绍计算双轴晶体二阶有效非线性系数的严格理论，适用于双轴晶体非线性光学频率变换器件的设计。
We present an accurate route, which is suitable for the design of nonlinear optical frequency translator of biaxial crystals, to calculate the effective second-order nonlinear coefficients.
目前，该波段的全固态激光光源主要是利用频率变换技术，通过倍频、和频、受激拉曼频移的方法来获得。
Presently, an all-solid-state laser in this spectral range was obtained by frequency conversion, such as frequency-doubling, sum frequency, stimulated or Raman frequency-shifted.
双线性时间-频率变换在时间域与频率域都具有较高的分辨率，有利于复杂背景条件下微弱瞬时信号的探测。
Bilinear time-frequency transform possesses a high resolution both in the time domain and the frequency domain. It can be utilized to detect weak transient signal in complex background.
因此，采用AD器件和数字滤波器技术实现混频等频率变换功能，是一种比较先进和新颖并且实际可行的方法。
Therefore, taking advantage of AD device and digital filtering technique to realize mixing and other frequency transformation function is a comparatively advanced, novel and practical method.
以前的可调谐紫外激光器是基于可见光区域的可调谐激光，经过非线性频率变换得到。 结构复杂、可靠性差。
The majority of known tunable UV sources were complicated devicescomprising some tunable laser in visible region and subsequent nonlinear frequency conversion.
当我们说“频率变换”或者说“代表频率”是我们通常所说的傅里叶变换，如离散傅里叶变换dft实现，或。
When we say "frequency transform" or talk about "representing frequency" we are usually talking about the Fourier transform, implemented as the DFT, or discrete Fourier transform.
本文提出采用AD和DSP软件编程的方法实现信号的混频功能，作为AD和数字滤波器实现频率变换的一个典型应用。
In the paper, we advanced the method of mixing function by means of AD and DSP software programming, which is a typical application of frequency transformation with AD and digital filter.
本文利用数字梯形滤波器的设计原理，以离散微分器作为积木块，利用频率变换方法，设计出数字LDD梯形高通滤波器。
Based on the design fundamental of digital LDI ladder filter, a digital LDD ladder high-pass filter is designed by using the frequency transformation in this paper.
利用多传感器对切削力和振动信号进行监测，通过频率变换提取切削力特征量，采用小波包分解技术提取振动信号特征量。
Signals of cutting force and vibration are measured with multi-sensor and features in frequency domain and time-frequency domain are extracted by using wavelet package decomposition.
采用电压频率变换和频率电压变换技术处理模拟信号，有效的克服了光电耦合器的非线性，实现了模拟信号的线性光电隔离。
Analog signal linear photo-isolation is carried out by using voltage-frequency conversion and frequency-voltage conversion technique so as to effectively overcome nonlinearity of the photocoupler.
在总结激光频率变换的原理和非线性光学晶体的相位匹配理论的基础上，可以根据相位匹配理论进行晶体的相位匹配角的计算。
The principles of laser frequency transformation and the theory of phase matching in nonlinear optic crystals are also discussed. Based on this theory, Angle of phase match is calculated.
最常见的数字信号处理技术之一是离散傅立叶变换（DFT），它把一个信号分解成它的组成频率，并表示成一个矩阵。
One of the most common digital-signal-processing techniques is the discrete Fourier transform (DFT), which breaks a signal into its component frequencies and can be represented as a matrix.
当他们把测量结果通过傅立叶变换分解成一组波时，这组波随着频率减小而增幅巨大。
When they turned these measurements into a series of waves using a mathematical trick called a Fourier transform, the waves increased in magnitude as their frequency decreased.
或许我们可以寻找序列的Fourier变换中的高频率成分。
Maybe we could look for high frequency components in Fourier transforms on the sequences.
本文采用基于傅立叶变换(DFT)的频谱分析方法，计算流量信号的频率和相位差。
This paper presents calculation of frequency and phase difference of flow signals with spectrum analysis on basics of Fourier transform (DFT).
频率域滤波方法虽然可解决时变滤波问题，但这种方法是基于傅里叶变换，在窗口与窗口之间的接合部位会出现假异常。
Although the filtering method in frequency domain can solve the time variant filtering problem based on Fourier transform, the method may appear a false anomaly in conjunct part between Windows.
小波变换作为频率和时间的二元函数，使之可以很方便地在频率和时间域中同时进行地震波能量的吸收衰减补偿。
Wavelet transform involves the two-variate function of frequency and time, which makes it convenient to simultaneously compensate for attenuation of seismic energy in frequency and time domains.
时频分析方法是利用小波变换原理，从地震波的时间域和频率域同时对其作出分析。
Time frequency analysis method is used to analyze the time domain and frequency domain of seismic waves at the same time according to the principle of wavelet transformation.
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