毫米波焦平面阵列的1/f噪声的小波处理方法
THE PROCESSING MEANS OF 1/F NOISE IN MILLIMETER WAVE FOCAL PLANE ARRAY WITH WAVELET TRANSFORM
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摘要: 文中在概要介绍毫米波焦平面阵列成象探测器中存在的1/f 噪声的特性的基础上，深入分析了小波变换与1/f 噪声的关系，提出用小波分解的方法对毫米波焦平面探测器的1/f 噪声进行去相关处理，推导了相应的表达式。仿真结果表明可得到满意的效果。Abstract: After briefly interoducing the characteristics of 1/f noise in millimeter wave focal plane array detectors, the paper analyses the relation of the wavelet transform and 1/f noise in detail and suggests the fashion of decorrelating 1/f noise using the wavelet transform., also deduces the relative expressions. The results of computer simulation show the good effect.
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Goldsmith P F, et al. Focal plane imaging systems for millimeter wavelengths. IEEE Trans. on MTT, 1993, MTT-41(10): 1664-1675.[2] Zah C, et al. Millimeter wave monolithic Schottky diode imaging arrays. Int. J. of Infrared and Millimeter-Waves, 1985, 6(11): 981-997.[3] Scribner D A, et al. Test and evaluation of stability in IR staring focal plane arrays after nomini-formity correction. SPIE, 1989, 1108: 255-264.[4] Deriche M, Tewfik A H. Signal modeling with filtered discrete fractional noise processes. IEEE Trans. on Signal Processing, 1993, SP-41(11): 2839-2849.[2]Wornell G W. Wavelet-based representations for the 1/f family of fractal processes[J].Proc. IEEE.1993, 81(10):1428-1450[3]秦前清,杨宗凯.实用小波分析.西安西安电子科技大学出版社,1995: 29-54.[7] Hosking R M. Modeling persistence in hydrological time series using fractional differencing. Water Resources Research, 1984, 20(8): 1898-1908. -
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