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exer1

于 2011-06-20 发布 文件大小:112KB
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  用阵列光电传感器实现空间窄带陷波功能时,采用右图所示的空间权重结构:共有N=2M+1个敏感元件,各敏感元件宽为w,间距为p,中心处敏感元件的权重为+2M,其他2M个敏感元件的权重皆为-1。求此权重函数的傅立叶变换及空间功率谱,并绘图说明当N=7,p=1mm,w=1/3mm时的空间功率谱的零点特征及其应用意义。(With a photoelectric sensor array to achieve narrow-band notch function space, with the weight shown on the right of the space structure: a total of N = 2M+1 a sensitive element, the sensor width w, spacing p, the center of the sensitive components of weight+2 M, 2M a sensitive element of the other weights are all-1. This function find the Fourier transform of the weight and space power spectrum, and the drawing shows that when N = 7, p = 1mm, w = 1/3mm space power spectrum at zero characteristics and application significance.)

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