雷达目标一维距离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: 文中首先阐述了信号奇异性与小波变换模极大值的关系、含噪非平稳信号在小波变换下信号与噪声的不同特性;然后提出了可用于高距离分辨力雷达目标识别的一维距离象多分辨分解和目标结构特征的多分辨描述方法.根据目标结构特征的多分辨描述,定义了距离象的相异度概念,利用相异度可以实现目标的快速匹配识别.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.
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Mallat S. Multifrequency channel decomposition of images and wavelet models. IEEE Trans. on ASSP, 1989, ASSP-37(12): 2091-2110.[2]张亮.毫米波导引头目标识别与实时处理研究:[博士学位论文].国防科技大学研究生院.1997. -
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