高分辨一维距离像的雷达目标识别方法  

Radar Target Recognition based on High Range Resolution Profile

作　　者：樊萍[1] 景占荣[1] 

机构地区：[1]西北工业大学,陕西西安710072

出　　处：《火力与指挥控制》2008年第11期112-115,共4页Fire Control & Command Control

基　　金：航天科技基金资助项目(2007CH080004)

摘　　要：提出了一种基于高分辨一维距离像的宽带雷达目标识别方法。首先使用零相位描述对雷达回波进行预处理,实现距离像的绝对对准,解决了平移敏感性问题。然后根据多分辨分析构造出3次Battle-Lemarie小波函数和尺度函数,对预处理后的一维距离像进行小波变换提取目标特征矢量,在显著降低特征存储空间的同时保留了主要散射点。最后对3类不同目标的雷达实测数据进行识别试验,结果表明本算法不但具有较高的正确识别率,而且能够有效降低加性高斯白噪声对识别率的影响。A new approach to the wideband radar target identification using the high range resolution profile is proposed. Firstly, the pretreatment of zero phase representation is applied to the HRRP, which leads to the absolute rang alignment and eliminates the translation sensitivity. According to the multiresolution analysis, the 3rd Battle-Lemarie scale function and wavelet function are constructed. Then the wavelet transformation of HRRP is performed to extract the target feature, which can greatly reduce the stored data and keep the major scattering centers. The performance of the present approach is examined through classification experiments. The results show that this approach has good target classification capability while significantly reducing the effect of additive Gauss white noise.

关 键 词：目标识别 一维距离像 零相位描述 特征提取 Battle—Lemarie小波 

分 类 号：TN95[电子电信—信号与信息处理]