| 摘要: |
| 敌我识别模式5信号采用Walsh软扩频、MSK调制等技术，提高信息容量和安全性的同时也使得对模式5信号的个体识别变得困难。针对这个问题，利用模式5信号同步脉冲码元固定的特点，提出两种针对模式5信号的个体识别方法：基于同步脉冲瞬时相位特征的个体识别方法和基于同步脉冲互相关特征的个体识别方法。仿真试验结果表明，在信噪比12dB条件下，基于同步脉冲瞬时相位特征的个体识别方法正确率90.4%，基于同步脉冲互相关特征的个体识别方法正确率94.8%；且两种方法的性能都要优于传统个体识别方法。 |
| 关键词: 模式5信号 个体识别 同步脉冲 瞬时相位 互相关 |
| DOI： |
| 分类号:TN971 |
| 基金项目: |
|
| Specific Emitter Identification for Mode 5 Signals Based on Pilot pulse |
|
|
|
|
| Abstract: |
| Mode 5 signal used in the identification friend or foe (IFF) system adopts technologies such as Walsh spread spectrum and MSK modulation to improve information capacity and security, while also making Specific Emitter Identification(SEI) of the Mode 5 signals difficult. To address this issue, two SEI methods for Mode 5 signals are proposed based on the fixed symbols of pilot pulse: SEI method based on the instantaneous phase features of pilot pulses and SEI method based on the cross-correlation features of pilot pulses. The experimental results show that when the SNR is 12dB, the accuracy of the method based on the instantaneous phase features is 90.4%, and the accuracy of the method based on the cross-correlation features is 94.8%. Both SEI methods proposed by this paper outperform the traditional ones. |
| Key words: IFF mode 5 Specific Emitter Identification instantaneous phase cross-correlation |