交叉谱 meaning in English
cross spectrum
cross-spectrum
Examples
- Finally , to deal with the situation that the dimension of the signal subspace decreases , a new algorithm is proposed based on the idea of the cross spectral method
最后,根据降秩技术中的交叉谱思想,提出了一种新的对信号子空间维数减少时的处理算法。 - Cross spectrum analysis is made between aam , torque , sst and lod . it is found that significant correlations exist between those series on time scales of shorter than one year
交叉谱分析表明，在小于一年周期上，角动量、山脉和摩擦力矩、尼诺三区海温、日长间都存在着显著相关关系。 - The basic concepts of second - order coherence theory in describing wavefields are introduced . these concepts are the cross - spectral density function and spectral degree of coherence in the space - frequency domain , and the mutual coherence function and the complex degree of coherence in the space - time domain
介绍了二阶相关理论中描述光场相干性质的基本概念，包括空间-时间域中的互相关函数、复相干度和空间-频率域中的交叉谱密度函数、光谱相干度。 - Based on the propagation law of the cross - spectral density function in the space - frequency domain , the properties of polychromatic vector gsm beams through a paraxial optical abcd system are studied . the analytical propagation expressions for the cross - spectral density matrix of vector gsm beams passing through a paraxial optical abcd system are derived , which permits us to study the propagation properties of vector gsm beams , including the propagation - induced polarization changes , effect of the spectrum bandwidth and irradiance distributions in a unique way . there are some applications of the theoretical results
基于空间一频率域中交叉谱密度函数的传输理论，研究了多色矢量gsm光束通过abcd光学系统传输时偏振特性的变化规律，首次推出了矢量高斯一谢尔模刑fgsm )光束通过近轴abcd光学系统交叉谱密度矩阵的传输公式，并对矢量gsm光束传输中偏振的变化、谱宽的影响和强度的分布等进行了统一研究。 - Secondly , the correlations between el nino southern oscillation ( enso ) with the temperature and precipitation during the recent 50 years in heilongjiang are analysed by the bivariate wavelet transformation applying marr wavelet function . and some comparisons are made by applying both bivariate wavelet transformation and fourier cross spectral methods to the data
其次，选取marr小波函数，采用交叉小波变换方法分析了近50年来黑龙江省气温和降水与nino3区海温和南方涛动指数的相关关系，并与传统的交叉谱分析结果进行了对比分析。