摘要
在电子侦察中,需要判断截获的雷达信号的调制方式和调制参数。利用Kay瞬时测频结合聚类分析的方法,可检测LFM、FSK和PSK信号。对相位编码信号,利用单脉冲多重相关积累算法从信号中提取相位跳变规律,并在此基础上给出了相位编码序列恢复方法。该处理方法在信噪比较高时,计算速度优于短时傅里叶变换(STFT)等方法。最后,通过计算机仿真显示了该方法具有较好的精度和处理结果。
The modulation mode and parameters of radar signal are required connaissance. The LFM, FSK and PSK signals can be detected by Kay＇ s urement and clustering method. For phase code signal, the rules of phase - to determine instantaneous in electronic re- frequency meas- shifting from signal are picked - up by using coherent integration of single pulse, and the method of recovering phase code sequence is proposed. The speed of new method is prior to the Short- Time Fourier Transform （STFT） method when the SNR is high. Finally, the computer simulation shows that this method has better precision and processing result.
出处
《电讯技术》
2008年第12期52-55,共4页
Telecommunication Engineering
关键词
电子侦察
信号处理
Kay方法
瞬时测频
相关积累
相位编码
electronic renaissance
radar signal processing
Kay＇ s method
instantaneous frequencymeasurement
coherent integration
phase code
