Abstract
脉内无意调制特征是雷达特定辐射源识别的基础和关键。该文在考虑多普勒效应的条件下，对工程中常用的脉内无意调频与无意调相特征进行了可分性比较。首先给出了高斯白噪声以及中、高信噪比条件下，脉内信号相位的简化观测模型；在分析以往关于两种待比较特征的提取流程的基础上，给出了特征定义；然后利用基于离散度矩阵的可分性判据对两种特征进行了理论的可分性比较。结果显示，脉内无意调相特征对噪声的鲁棒性相对更强。仿真实验以及104个实测雷达的个体识别试验验证了上述结果。
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