子波高分辨譜估計方法及其在毫米波雷達目標一維距離成像中的應用
WAVELET HIGH RESOLUTION SPECTRUM ESTIMATION METHOD AND ITS APPLICATIONS IN mmW RADAR TARGET PROFILE
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摘要: 文中研究了一種子波譜估計方法。將該方法用于實際的毫米波雷達目標一維距離成像背景之下,在信號采樣頻率、采樣數(shù)據(jù)長度相同時,可以獲得像分辨率高于相同條件下FFT方法的一維距離像,從而可以對一維距離像進行高分辨地分析,在實際應用中具有一定的意義。Abstract: This paper studies a method using wavelet transform to estimate the signals spec-trum.The method is applied to the practical MMW radar targets echo signals,and on the condition of the same sampling frequency and sampling data length,it can achieve one dimen-sional range profile with profiles resolution superior to FFTs,so the one dimensional range profile of targets can be analyzed with high resolution,there is certain significance in the prac-tice.
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張亮.毫米波導引頭目標識別與實時處理研究:[博士學位論文].長沙:國防科技大學研究生院,1997.[2]王建忠.小波理論及其在物理和工程中的應用.數(shù)學進展, 1992,21(3),289316.[3]趙松年.子波變換與子波分析.北京:電子工業(yè)出版社, 1996,第二章,第三章.[4]Combes J M,Grossman A,Tchamitchian P.Eds.,Wavwlets:Time-Frequency Methods and Phase Space.Berlin:Springer,IPTI,1989,298-304. -
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