雷達目標一維距離象多分辨特征描述和快速匹配法研究
RESEARCH OF MULTI-RESOLUTION FEATURE DESCRIPTION AND FAST MATCHING FOR RADAR TARGET ONE DIMENSIONAL RANGE PROFILES
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摘要: 文中首先闡述了信號奇異性與小波變換模極大值的關(guān)系、含噪非平穩(wěn)信號在小波變換下信號與噪聲的不同特性;然后提出了可用于高距離分辨力雷達目標識別的一維距離象多分辨分解和目標結(jié)構(gòu)特征的多分辨描述方法.根據(jù)目標結(jié)構(gòu)特征的多分辨描述,定義了距離象的相異度概念,利用相異度可以實現(xiàn)目標的快速匹配識別.
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關(guān)鍵詞:
- 小波變換; 雷達目標識別; 距離象; 特征描述
Abstract: This paper,at first ,expounds the relation between the singular singal and the modular maximum for wavelet transform,and the different features of singal and noise in wavelet transform.Then,in the light of high-resolution radar target one dimensional range profiles,it is decomposed in multi-resolution and the multi-resolution feature description are obtaiend.According to the multi-resolution feature description of radar target,the conception of difference degree for the range profiles is defined.Using the difference degree,the fast matching for target recognition can be obtained. -
Mallat S. Multifrequency channel decomposition of images and wavelet models. IEEE Trans. on ASSP, 1989, ASSP-37(12): 2091-2110.[2]張亮.毫米波導(dǎo)引頭目標識別與實時處理研究:[博士學位論文].國防科技大學研究生院.1997. -
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