cross-spectral density
英 [krɒs ˈspektrəl ˈdensəti]
美 [krɔːs ˈspektrəl ˈdensəti]
网络 互谱密度; 互功率谱密度; 交叉谱密度
双语例句
- For the superposition of the intensity R is less sensitive to turbulence than that for the superposition of the cross-spectral density function.
光强叠加时R受湍流的影响比交叉谱密度函数叠加时小。 - Starting from the polarization matrix and propagation equation of the cross-spectral density matrix, a detailed study of the influence of hard-edge aperture on the spectral switch of polychromatic vector Gaussian-Schell model beams is performed.
从偏振矩阵和交叉谱密度传输公式出发，分析了硬边光阑对多色矢量高斯-谢尔模型光束轴上光谱开关的影响。 - The fuse makes use of an underwater sound intensity vector which can be measured by the cross-spectral density of two hydrophone signals rather than sound pressure which usually was used before, so that it can utilize more ship's information.
该引信使用的是水下声强矢量而不是以前通常使用的声压，并且采用双水听器信号的互谱方法测量水下声强矢量。 - Starting from the geometrical-imaging law and the propagation law of the cross-spectral density function, the phenomena of spectral changes of polychromatic Schell-model beams diffracted by a slit were theoretically and experimentally investigated.
从几何成像规律和交叉谱密度函数的传输定律出发，从理论和实验两方面研究多色谢尔模型光束经单缝衍射后光场的光谱变化现象。 - Systematic errors in acoustic intensity measurement using the cross-spectral density of two microphone signals
双传声器互谱法声强测量的系统误差 - The propagation formula of the cross-spectral density of partially coherent flattened Gaussian Beam ( PCFGB) through ABCD optical system was derived using Huygens-Fresnel diffraction integral formula.
利用惠更斯-菲涅尔衍射积分公式导出了部分相干平顶高斯光束（PCFGB）通过ABCD光学系统的传输公式。 - However, when the strength of turbulence increases, R for the superposition of the cross-spectral density function may be larger, equal to or even smaller than that for the superposition of the intensity.
随着湍流逐渐增强，交叉谱密度函数叠加的R可能大于、等于或者小于光强叠加时的R。 - Furthermore, analytical expressions are derived for the elements of the cross-spectral density matrix of a stochastic electromagnetic beam truncated by a slit aperture and passing through the turbulent atmosphere.
进一步推导得到了经过狭缝光阑截取的随机电磁光束通过湍流大气传输，输出平面内交叉谱密度矩阵元的解析表达式。 - Analytical formulas for the elements of the cross-spectral density matrix of the stochastic electromagnetic Gaussian Schell-model beam truncated by rectangular apertures with different sizes and passing through the axially nonsymmetrical optical system are derived.
接着推导了受不同大小矩形光阑截取的电磁高斯谢尔模光束通过轴向非对称光学系统传输的交叉谱密度矩阵元解析表达式。 - The analytical expression for the cross-spectral density function of the scattered field is derived, which provides an effective and convenient way to investigate the scattering of the polychromatic plane wave by Gaussian-correlated, quasi-homogeneous, anisotropic media.
该表达式为我们研究多色平面波经由高斯关联的准均匀各向异性介质的散射问题提供了有效而又便捷的途径，计算结果反映了介质的各向异性对散射场光谱密度和光谱相干度的影响。 - 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。 - By use of the cross-spectral density matrix, the properties of the scattered field, including the spectral density, the spectral degree of coherence, and the spectral degree of polarization are discussed.
根据散射光波的交叉谱密度矩阵，研究散射场的光学特性，包括光谱强度、光谱相干度以及光谱偏振度。 - In free space R for the superposition of the cross-spectral density function is always larger than that for the superposition of the intensity.
自由空间中，交叉谱密度函数叠加时R比光强叠加时的大。 - Furthermore, we study the scattering of the polychromatic plane wave by the system of anisotropic particles with deterministic locations and obtain the analytical expression for the cross-spectral density function of the scattered field.
我们进一步考虑了多色平面波经由具有固定分布位置的各向异性粒子组成系统的散射，获得了散射光场交叉谱密度函数的解析表达式。 - Firstly, the description of the scattering of vector light waves is discussed and the cross-spectral density matrix of the scattered field is introduced.
首先，讨论矢量光波经过介质散射后的描述方法，并给出矢量光波散射过程中的交叉谱密度矩阵。 - We measured relative value of spectral density and the spectral degree of coherence with CCD. And then the cross-spectral density matrix were obtained by means of fitting.
利用CCD测量了光谱密度相对值以及光谱相干度，采用拟合的方法得到了交叉谱密度矩阵。