A design method for low phase noise agile X-band frequency synthesizer is presented, the theoretic analysis and calculation is performed and the test results are given.
介绍一种低相噪、捷变频x波段频率综合器设计方法，并进行理论分析、计算，最后给出测试结果。
In this model, running state of transmission line is divided into four states, and calculation method of state probability, state frequency and state duration in balanced state are given.
该模型将输电线路的运行状态划分为四种状态，给出了每种平稳状态的状态概率、状态频率和状态持续时间的计算方法。
The conception of transient frequency and calculation method of wavelet packet are introduced, and time frequency distribution about simulation and actual seismic signals is given.
介绍了瞬时频率的概念和瞬态谱的小波包计算方法，并结合时间域模拟信号给出了其时频分布。
In this article, a calculation method is put forward for free vibration frequency of a pipe which contains flow fluid.
本文提出了对包含有流动流体的管道自由振动频率的一个计算方法。
The kinetic parameters in the models, including pseudo activation energy and apparent frequency factor were obtained by using Monte Carlo numerical calculation method.
利用随机试验法等数值计算方法求得了模型中的表观活化能和视频率因子等动力学参数。
The L-moment method has theoretical advantages in hydrologic frequency analyses, but less practical application because of its complexities in calculation.
线性矩法在水文频率分析中具有理论优势，但因为计算复杂而实际应用较少。
The main calculation results are parameters of X, CV and CS for line fitting method and designed value XP of any assignment frequency.
主要计算结果为适线法确定的参数X、CV和CS，以及任何指定频率的设计值XP。
About theoretic calculation for lightning electromagnetic field, two analytical methods are raised, which are dipole method in time domain and time-varying field method in frequency domain.
在雷电电磁场的理论计算方面，提出了两种方法，即时域中的偶极子方法和频域中的时变场方法。
Matrix step is low by using the finite element transfer matrix method. Natural frequency by calculation approaches to actual natural frequency and the error is allowable.
用有限元传递矩阵法分析火炮身管固有振动特性，矩阵阶次低，计算所得的固有频率与实际固有频率接近，误差在允许的范围内。
In study of constant force grinding, a calculation method, which could calculate frequency range of frequency feature parameter automatically, is presented based on generic algorithm in this paper.
本文结合恒力磨削的研究，基于遗传算法提出了一种可自动地确定测试信号频域特征参数频率计算范围的方法。
Because the calculation method is accomplished by MATLAB Tool, it is in favor of realizing design and simulation of high-frequency chain switch power supply circuit.
由于该计算方法是在MATLAB环境下进行，有利于进一步实现高频链开关电源电路的设计和仿真。
Presents the transmission matrix of heat transfer of multilayered spherical walls and introduces the calculation procedure of frequency-domain regression (FDR) method.
给出了多层球形墙体的热传递矩阵，提出了用频域回归(FDR)方法计算球形墙体瞬时传热的方法。
With the stiffness value of the damper, using cascade spring connection calculation method, the three direction rigidity and resonant frequency of the pod were calculated again with damper installed.
并根据减振器刚度值，利用弹簧串联刚度的计算方法计算了使用减振器系统的三向刚度和谐振频率。
The amount of calculation is greatly decreased over high frequency zones by using high-frequency approximation method.
采用相对相位叠加的高频近似方法，处理天线阵高频区散射的计算，大幅减少了计算量。
The spectral leakage caused by the truncated signals results in frequency calculation error and slows frequency tracking. A Hanning windowed recursive DFT method is introduced.
但由于截断信号会产生频谱泄漏，使得相位和频率计算结果有一定误差，采用该方法跟踪频率，实时计算电网变化的频率速度较慢。
The traditional method for amplitude-phase frequency characteristic calculation is first to solve the numerator polynomials and denominator polynomials of a transfer function.
频域计算的传统方法是先求出传递函数的分子多项式和分母多项式。
Using direct calculation method can easily change in acceleration and deceleration time, maximum start frequency, maximum operating frequency in order to adapt to different processing conditions.
采用直接计算的方式可以方便的改变加减速的时间、最高启动频率、最高运行频率以适应不同的加工状况。
According to mechanism of low frequency broadband noise of the propeller, theoretical analysis method is given and numerical calculation of the noise is carried out as well.
在分析螺旋桨低频宽带噪声成因的基础上得到了理论计算方法，并作了数值计算。
According to mechanism of low-frequency broadband noise of the propeller, theoretical analysis method is given and numerical calculation of the noise is worked out as well.
在分析螺旋桨低频宽带噪声成因的基础上得到了理论计算方法，并作了数值计算。
Using finite difference method, we carry out the numerical calculation of the electric field induced by a low frequency magnetic field in a two dimensional stratified biological medium.
采用有限差分法对低频磁场在二维分层生物媒质中诱发的电场进行了数值计算。
The frequency domain analysis can take into account the characteristics of atmospheric turbulence, and the calculation is simple, so this method have been widely used.
频域分析法能全面考虑大气湍流的特性，且计算简便，因而得到了广泛的应用。
The formula for the parameter relative phase difference of the pseudo-random tripe-frequency IP method is draw through calculation and analysis of a established RC model, and a proof is given.
通过对建立的RC模型计算分析，引出了伪随机三频激电法的参数相对相位差的计算公式，并加以论证。
A new algorithm of analysing FM (frequency modulation) interferogram is described. Compared with the Fourier method, it is time saving and suitable for real-time calculation.
本文提出一种无需滤波处理的调频条纹分析算法，该算法与傅里叶技术相比具有省时、便于进行快速、实时位相测量等优点。
Field-Path model and calculation method are set up for dynamic performance to be accurately calculated in a system of PWM frequency conversion and speed regulation in the paper.
建立了PWM变频调速系统动态性能精确计算的场―路模型和计算方法。
The arrangement calculation method is the direct inquiring ways in the data base, it can arrange the documents according to the quoted frequency and count the sources of the articles.
本文实现的排序算法是迭代法和数据库的直接查询法，它可有效实现将文献按引文被引频次排序，以及对文献的刊物来源的统计。
An improved higher order method was used in calculating the natural frequency of a laminated composite plate because general calculation method was complicated.
针对一般的计算层合板振动特性的方法过于繁复的问题，采用了一种高阶改进方法来计算复合材料层合板的固有频率。
After the analyses of circuit theory of analogue voltage-to-frequency ratio converter, the design requirement of component parameters and the calculation method are presented.
分析了模拟电压一频率比变换电路原理，给出了元件参数的设计要求及其计算方法。
The lower-middle frequency range power flow calculation method of the double-layer vibration isolation system on flexible base is established.
多层隔振系统是隔振降噪一项重要的技术，而功率流方法是评价隔振系统隔振效果的有效方法。
The lower-middle frequency range power flow calculation method of the double-layer vibration isolation system on flexible base is established.
多层隔振系统是隔振降噪一项重要的技术，而功率流方法是评价隔振系统隔振效果的有效方法。
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