本文介绍根据辐射噪声的平均功率谱的形状识别两种不同型号的船舶目标的方法。
This paper discusses methods of recognizing different kinds: of ship objects by the shape of averaged power spectrum of radiated noise. This paper considers the pre-processing of data first.
给定具体的数字调角形式，用这种方法可在计算机上计算所给信号的平均功率谱密度。
Giving concrete digital-modulated form, the mean power spectrum density of the signals discussed can be obtained in this way. The calculation can be done on computers.
介绍了所用的二维光子计数斑点像探测系统的性能，分析了探测系统的光子噪声、附加噪声和其它更复杂的噪声对斑点图的平均功率谱和重谱的影响。
Then the influence on the average power spectrum and bispectrum of specklegrams caused by the photon noise, additive noise and more complex noises of other kinds in the detecting system .
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。
The average power reflection coefficient, directivity, power spectrum are obtained for different edge plasma densities and for different phasings between main waveguides.
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。
The average power reflection coefficient, directivity, power spectrum are obtained for different edge plasma densities and for different phasings between main waveguides.
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