| 摘要: |
| 雷达辐射源脉间PRI调制识别一直是电子侦察领域的热点和难点问题。针对这一问题提出了一种基于多特征量的综合识别处理算法，根据固定、抖动、参差、组变等7种雷达脉冲常见的PRI调制方式特点，从时域及频域的角度出发，有针对性地提取了零交叉密度、PRI序列差分零点密度等多个特征量，通过建立特征量与对应门限之间的逻辑关系，有效实现了对7种常见PRI调制方式的识别输出，一定程度解决了现阶段部分识别算法工程实践性不强及可识别PRI调制方式较少的问题。 |
| 关键词: 雷达辐射源 调制识别 脉间PRI调制 多特征量 |
| DOI：DOI:10.3969/j.issn.1672-2337.2019.05.008 |
| 分类号:TN957.51 |
| 基金项目: |
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| A Method for Radar Emitter Interpulse PRI Modulation Recognition Based on Multiple Characteristics |
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HAN Guoqiang，ZHAO Yang，JI Zhiqiang，LI Jinliang
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Luoyang Electronic Equipment Testing Center，Luoyang 471003，China
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| Abstract: |
| In the field of electronic reconnaissance，the radar emitter interpulse PRI modulation recognition is a hot and difficult topic. According to the characteristics of seven common radar pulse PRI modulation modes，such as fixed mode，jitter mode，jagged mode，and group change mode. For this problem a comprehensive recognition algorithm based on multiple characteristics is proposed. Starting from time domain and frequency domain，the various characteristics that include zero crossing density，PRI sequence difference zero density and others are extracted. By establishing the logical relation between the characteristics and the corresponding thresholds，the identification outputs of seven common PRI modes are effectively realized. To some extent，both the deficient practical application problem and the insufficient PRI modulation problem are solved. |
| Key words: radar emitter modulation recognition interpulse PRI modulation multiple characteristics |
