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- energy spectrum density 能谱密度
- The energy spectrum and the radius of the single ion microbeam were measured. 测试了单离子束能谱和束斑。
- The amplitude frequencies and distribution interval of power spectrum density of road surface depend on the roughness coefficient. 路面不平度系数的大小决定了幅值频次和路面功率谱密度的分布区间。
- This method resolves the problem of signal detection with high side lobe levels, but loses information of the power spectrum density. 这样解决了高旁瓣下信号检测的问题,但却丢失了功率谱密度信息。
- With its attacking traffic pattern, obvious difference was found between the power spectrum density (PSD) of legitimate and attack traffic samples. 分析发现,合法流量和包含攻击包流量采样在功率谱密度上存在显著差异。
- Methods of PSD(power spectrum density),ARMA,and Allan variance were federally used to study of the error speciality and modeling technology of the FOG(fiber optic gyroscope). 提出应用ARMA;A llan方差分析法及功率谱密度PSD(Power Spectrum Density)分析法联合对光纤陀螺FOG(Fiber Optic Gyroscope)的误差特性及建模技术进行了研究.
- Study on X-ray energy spectrum microanalysis chemical element of root tuber tissue in Potentilla anserina L. X-射线能谱微区分析法对鹅绒委陵菜块根组织的化学元素分析研究
- On the basis of the principle of the linear predictive coding(LPC), an weighting overlaps average LPC power spectrum density estimation algorithm is proposed. 基于线性预测编码(LPC)原理提出了一种加权交叠平均的LPC谱估计算法,同时给出了支持向量机解决多类分类问题的一对多方法。
- The properties of thecatalysts have been examined using XRD; SEM, BET . Energy spectrum analysis, etc. 采用了XRD、SEM、BET比表面积测定以及能谱等手段对催化剂的性能进行了表征。
- The tensile and impact section of the pangolin’s scale were examined with SEM and an energy spectrum analyzer. 利用扫描电镜及能谱仪对材料的拉伸、冲击断口及成分进行了分析。
- In chapter two, first we get the spectrum of synchrotron radiation then obtain the electron energy spectrum. 第二章通过理论计算得到同步加速辐射谱以及电子能谱;
- Energy spectrum and function of Hartmann potential[J].Chin.J.Atomic Molecular Phys., 1999, 16:443. HARTMANN势的能谱和波函数[J].;原子和分子物理学报;1999;16:443
- Hadronic interactions showed new characteristics after “knee" of energy spectrum of original cosmic rays. 原初宇宙线能谱“膝”以上能区,强子相互作用显示出新的特征。
- Studies of Energy Spectrum Analysis on the Absorption and Distributive Laws of Nutrient Elements in Sucking Roots of Ginkgo biloba L. 银杏吸收根营养元素吸收及分配规律的能谱分析。
- Quasi-periodic variations of the sea surface temperature (SST) field from Huanghai Sea are analysed by using the energy spectrum method. 本文用能谱方法分析了黄海的海表面水温(SST)场的准周期变化。
- Then,the classical spectral representation method based on power spectrum density functions is applied,and Davenport spectrum is used to generate wind speed histories of a given field. 然后,应用经典的基于功率谱密度函数的谱表现方法,结合D avenport谱生成了目标场地的风场;
- The existence of a negative energy spectrum presents some conceptual problems which can only be overcome in a many particle formalism. 负能谱的存在暴露了一些仅能在微粒论中才得以克服的概念上的困难。
- It is necessary to build the random error model of gyros. Several methods can be used to analyse random error model of ring laser gyro (RLG), such as power spectrum density (PSD), ARMA, and Allan variance. 在环形激光陀螺仪(RLG)随机误差模型分析方法中,有功率谱密度(PSD)分析,时序ARMA模型,及Alan方差分析。
- Moreover the question of the energy spectrum hardening and the photon scattering is one of important bottleneck to restrict the improvement of ICT. 而其中射线的能谱硬化和散射问题,又是制约工业CT各项性能指标提高的重要瓶颈之一。
- By the relation between the Allan variance of signal noise and power spectrum density (PSD), the sources of some kinds of noise and its properties are analyzed and calculated using fitting algorithm in the least square method(LSM). 根据光纤陀螺信号漂移和噪声的Allan方差与功率谱密度(PSD)关系,在Allan标准差模型的基础上采用最小二乘法(LSM)进行样本数据拟和,有效地分离和辨识出了光纤陀螺零漂信号中的各项误差源随机误差系数和误差贡献大小。