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An automatic seismic signal detector based on a fast algorithm of energy spectrum has been developed for digital accelerograph.

我们在能量谱快速计算的基础上,研制成功了用于数字化加速度仪的自动地震信号检波器。对一个连续系统进行了不变数字模拟,该系统被认为是作为单自由度系统加速度计的转换函数。

Different photodissociation spectra, the action spectrum as function of laser wavelength, and ratio curve of different channels were obtained.

得到了反应的光解谱和作为波长函数的光解行为光谱以及各反应通道的分支比。

In this paper,a systematic direct perturbation method of dark solitons is found.Having analyzed the mistakes in earlier works on perturbation method for dark solitonsand essence of the direct perturbation method for bright solitons,we notice that to in-troduce the adjoint solutions of the squared Jost solutions and to prove the completenessare crucial to the problem.Giving up the unnecessary scheme of introducing the adjointoperator in the bright soliton case,we directly find the adjoint solutions by meetingthe demand for the orthogonality that inner product of the squared Jost solutions andits adjoint should be proportional to a δ function in the case of continuous spectra.The corresponding adjoint operator is thus found.Taking into account the reductiontransformation,we find a correct description for the completeness of the squared Jostsolutions and directly verify its validity with explicit expressions of the squared Jostsolutions.

本论文建立了系统的暗孤子直接微扰方法,在对前人关于暗孤子微扰方法的错误以及亮孤子直接微扰方法的本质作了充分的分析后,认识到引入平方Jost解的伴随解和证明完备性是问题的关键,撇开过去亮孤子情况首先引入伴随算子的非必要作法,直接从平方Jost解与其伴随解的内积在连续谱时正比于δ函数这一正交性要求出发,找出了伴随解,同时得出了应有的伴随算子,在考虑到约化变换性后,得到了暗孤子情况的平方Jost解的完备性的正确表述,并在单个暗孤子的情况利用平方Jost解的显式直接验证了它的正确性。

The Airy function is used to calculate the plasma impedance and the grill-plasma scattering matrix is deduced, then the coupling properties of the HT-7 LHCD MJ launcher are studied with the antenna scattering matrix and the grill-plasma scattering matrix based on the liner coupling theory. The average power reflection coefficient, directivity, power spectrum are obtained for different edge plasma densities and for different phasings between main waveguides.

采用线型耦合理论,用艾黎函数计算了等离子体阻抗,推导出常规波导阵对等离子体的散射矩阵,并利用它和天线自身的散射矩阵研究了HT-7装置低杂波多结波导阵天线的耦合特性;计算了其平均功率反射系数、方向性系数和功率谱与等离子体边缘密度和主波导相位差等参数的关系。

Comparing EMD method with traditional FFT method in the analytical process, Hilbert-Huang transformation is found to be superior in performance. Structural response of the warship subjected to underwater explosion is simulated numerically, and EMD method is applied to analyzing the structural impulse signals.

该方法不把信号分解成正弦或余弦函数,因此既能分析线性稳态信号又可用于非线性非平稳信号的分析,且避免了高频干扰结果的出现,被认为是近年来对以Fourier变换为基础的线性和稳态谱分析的一个重大突破。

Initial growths of disturbances are measured by means of hot-wire anemometry. Due to the detected signals with low signal to noise ratio, the coherence function is used to eliminate background noise during data reduction.

在扰动增长的初始阶段,信号的信噪比非常地低,根据相关谱分析方法,应用相干函数,将扰动信号有效地提取出来,测量了初始扰动的增长。

Studies of the angular correlation functions and vibrational properties of zirconium nanowire have farther proved such novel structural growth order.

角关联函数和振动谱研究进一步证明了这种奇特的纳米线结构生长序。

The basic theory of cyclic statistics and the demodulation principle of cyclic autocorrelation function are introduced.

论文提出了利用循环统计量诊断往复式压缩机的方法,介绍了循环统计理论和循环自相关函数解调原理,利用仿真技术检验了循环统计方法的有效性,并分别对仿真信号和实测信号建立了循环谱密度三维图。

Some important characteristics of functions which have balancedness, correlation inimunityc propagation criterion or strict avalanche criterion are pointed out respectively; For example, presents the feature of the Walsh spectrum and the algebraic normal forms of functions with balanced correlation immunity.

分别指出了满足平衡性、相关免疫性、扩散性和严格雪崩特性等的布尔函数的一些重要特征,如关于平衡相关免疫函数的谱特征和其代数标准型的结构特征。

Digital Signal Processing Module, including convolve, deconvolve, correlate, Signal Generator, Hartley Transform, Fourier Transform, Windows Function, Finite and Infinite Impulse Response Filter.

通用软件平台主要由六类软件开发包来实现,包括: 1。数字信号处理软件包:负责基础的数据处理,针对仪器所分析的信号从单独离散量,到一维谱图、二维图像及动态分析系统的多维数据等,提供信号生成、时域处理、频域处理、窗函数和滤波器设计等功能函数。

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推荐网络例句

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务,乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐,因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。

Closes the eye, the deep breathing, all no longer are the dreams as if......

关闭眼睛,深呼吸,一切不再是梦想,犹如。。。。。。