基于时域调制域特征的 IFF 模式5信号识别
龙慧敏
【期刊名称】《电讯技术》 【年(卷),期】2014(000)007
【摘要】According to the new Mark XIIA Identification Friend or Foe(IFF) System Mode 5 signal pro-cessing requirement,the format and features of Mode 5 are analyzed and a new IFF Mode 5 identification method is proposed based on time and modulation domain characteristics of Mode 5. Through Mode 5 pulse width(PW) parameter extraction and MSK demodulation,this method combines with the PW parameter and inherent 16 bit MSK code 0111100010001001 of Mode 5 preamble pulse
to
complete
the
preamble
pulse
recognition.
Furthermore,according to the stagger of preamble pluses,an optimized algorithm is used to re-alize pulses frame matching. Both the simulation and experimental results verify the correctness and validi-ty of the method,and the correct identification rate is up to 100% under a given signal-to-noise ratio (SNR) condition.%针对 Mark XIIA 系统模式5信号处理的需求，对模式5信号的格式和基本特征进行了分析，提出了一种基于模式5信号时域和调制域特征的识别方法。该方法通过提取模式5信号脉冲时域参数和对脉冲进行 MSK 解调，获取模式5前导脉冲时域参数脉宽和前导脉冲固有的16位 MSK 解调结果0111100010001001来完成模式5信号前导脉冲识别，并根据前导脉冲偏移值特点优化了模式5信号框架匹配算法流程，实现了
基于时域调制域特征的 IFF 模式5信号识别
