The experiments show that it can be used to filter a narrow bandwidth laser light to obtain a narrower output spectrum.
初步实验表明，用它对窄带的光源进行滤波，可以获得线宽更窄的光谱。
Based on the ray trace method, an expression for output spectrum of the two-segment semiconductor lasers has been derived.
用射线法导出了两段式半导体激光器的端面输出谱。
The output spectrum of FBG-ECL in different peak reflectivity was practically measured. The result of experiment is accordant with theoretical analysis' conclusion.
最后根据实测在不同反射率下外腔激光器的激射光谱，发现理论分析结果和实验数据是吻合的。
The fundamental principle of direct digital synthesis (DDS) is introduced in this paper. Based on signal analysis, the ideal output spectrum characteristic of DDS is analyzed briefly.
对DDS基本原理进行了简要介绍，利用信号分析的方法对DDS理想输出进行频谱分析。
At first, this paper described the basic structure, working principle, sources of spurious signals and characteristics of output spectrum, of direct digital frequency synthesizer (DDS).
首先分析直接数字频率合成器(DDS)的基本结构、工作原理、杂散来源、输出频谱特性。
For example, the peak at 20 MHz in the spectrum is caused by the parasitic oscillation due to the output capacitance of the MOSFET and the leakage inductance of the transformer.
举例说明，20兆赫兹的峰点是钳位过程结束后主要由场效应晶体管输出电容和变压器漏感引起的寄生振荡产生的。
Spectrum analysis diagnosis system (SADS) is composed of user interface, data management, KBM, reasoning facility, self-learning adjusting, remote fault diagnosis and system output modules etc.
油液光谱分析诊断系统(SADS)由人机交互、数据管理、知识库管理、推理机、自学习调整、远程故障诊断和系统输出等模块组成。
The relations between spectrum densities of system output responses and frequency were obtained by assuming input functions to be ergodic and stable stochastic processes.
假设输入函数为各态历经的平稳随机过程，得出各输出响应的谱密度与频率的关系。
We can monitor many parameters and characteristics by measuring TEN, such as surge frequency, spectrum width, threshold current, mode jump and stability of output light power.
通过对激光的电噪声的测量可以监测激光器的诸多参数和特性，如弛豫频率，谱线宽度，阈值电流，模式跳变及输出光功率是否稳定等。
The vertical spectrum displacement in the output pulse is calculated and shown quantitatively as function of the Angle between the grooves.
计算了输出脉冲的垂直谱位移，并将其作为刻线夹角的函数进行了分析。
The memory simulated annealing approach is presented for designing an optical FIR filter based on crystal birefringence, which is able to provide arbitrary spectrum output with double channels.
提出了利用记忆型模拟回火退火算法来进行基于晶体双折射的光学有限脉冲响应滤波器设计的新方法，用以实现任意光谱响应双通道输出。
It is established on the expected value of the theoretical spatial spectrum over the joint posterior density function of the array output signal and noise parameters.
它是建立在阵列输出信号和噪声参数联合后验概率密度基础上的空间谱估计。
For a linear array CCD in a push-bloom imaging system, on condition that the input signal is a sine pattern with single frequency, the output signal spectrum is analysed.
假定输入为单频正弦光栅，对刷扫工作状态下线列CCD输出信号的频谱进行了分析。
The results of circuit simulation are given, and we compare the spectrum of output signal of the coupled circuit with that of modified Colpitts circuit.
给出了基本改进型和两级耦合后的信号产生电路仿真结果，并对这种混沌雷达信号源和单级考必兹混沌电路的输出信号频谱进行了比较。
The filter is put on the power spectrum before applying the inverse Fourier transform to yield the correlation output. This technique can be used in pattern recognition of grey level input image.
将这种滤波器放置在傅里叶反变换产生相关输出之前的联合功率谱面上，该技术可以应用在具有不同灰度图像的模式识别中。
Laser compared to other lights has the characteristics of higher power, less divergence Angle, better monochromaticity, shorter light pulse and continuously tunable spectrum output.
激光与其它光相比，具有功率高、发散角小、单色性好，输出的光脉冲窄和输出光谱可连续调谐的特点。
The frequence response or the load spectrum of a machine can be extracted from the output signal by homomorphic signal processing.
而同态滤波可以从响应信号中识别机器的结构转递特性或载荷谱。
A VI-based spectrum analysis instrument using CVI software is designed and it is used to test and analyze sensor output signal of jet loom vibration. The whole testing system is established.
使用CVI软件设计了一种基于虚拟仪器的频谱分析仪，并将其运用于喷气织机振动传感器输出信号测试与分析中，建立了整个测试系统。
The present invention relates to a method for raising output power of fibre-optic laser and quality of its optical spectrum and beam, belonging to the field of laser and optoelectronics.
一种提高光纤激光器的输出功率、光谱和光束质量的方法，属于激光及光电子学领域。
For the effective suppression of DDS spur, the paper has discussed three main origins of DDS spur and analyzed influence of the spur to the DDS output frequency spectrum.
为了能有效的抑制DDS的杂散，讨论了DDS杂散的三个主要来源并分析了部分杂散对DDS输出频谱的影响。
Theoretically, the expected output of impulse deconvolution is a spike, whose frequency spectrum can be considered as that of white noise.
从理论上说，脉冲反褶积的希望输出信号是一个尖脉冲，其频谱可以看成是一个白噪信号的频谱。
The output of the old spectrum instrument usually was the single value or diagram, can' t meet many demands of modern analytical technical experiment.
早期光谱仪器输出的往往是单个数值或图谱，不能满足现代实验分析技术的许多需要。
Note: 1 master data input, output of basic statements 2 master data zeros programming requirements 3 grasp the real signal spectrum Symmetry Principle.
注意：1掌握数据输入、输出基本语句；2掌握数据补零的编程要求；3掌握实信号频谱对称性原理。
When wave length scanning is carried out, three output white light interference spectrums of the interferometer and a transmission spectrum of the etalon and the fiber grating are probed.
扫描波长时，探测干涉仪的三路输出白光干涉光谱，以及标准具和光纤光栅的透射谱。
A novel two-stage Er-doped ase broadband light source with two output bands, i. e. C-band and L-band was designed and demonstrated based on the analysis of the principle of the L-band ase spectrum.
在分析L波段放大自发辐射(ase)谱产生原理的基础上，设计出一种新颖的双级结构掺铒光纤ase宽带光源，该光源可在两个端口分别输出高功率的C波段和L波段的ASE谱。
The testing results show that the vibration control system can accurately compensate the frequency response of the shaker system so that any output with desired spectrum can be achieved.
试验结果表明，依照文中所给出的方法构成的振动控制系统，可以精确地补偿激振系统本身的频响特性影响，从而能够使激振器或振动台输出具有任意目标频率特性的波形。
The frequency response characteristic of the tested system can be easily obtained just by giving a chaotic input and analyzing the spectrum of the output.
该方法仅需将混沌信号作为激励信号作用于被侧系统，通过计算系统偷出信号的频谱，便可获得被浏系统的颇率回应特性。
The function of spectrum analysis is to filter the signals and to add the window function on it, then to output the processed signals. It also analyzes time…
频谱分析模块主要是对上述信号进行滤波和加窗函数处理，输出处理后的波形，同时进行时域分析、频域分析以及谐波分析。
The function of spectrum analysis is to filter the signals and to add the window function on it, then to output the processed signals. It also analyzes time…
频谱分析模块主要是对上述信号进行滤波和加窗函数处理，输出处理后的波形，同时进行时域分析、频域分析以及谐波分析。
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