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。利用递归式短时
傅里叶变换(STFT)和相参积累的分析方法,可对相位编码信号进行检测和解码。与一些常规
方法相
比,该方法在较低信噪比时也可以得到较好的分析结果。最后,通过计算机仿真验证了该
方法的有效性。 |
关键词: 电子侦察 信号处理 时频分析 短时傅里叶变换 相参积累 |
DOI:10.3969/j.issn.1001-893X. |
|
基金项目: |
|
Phase Coded Signal Analysis Based on STFT |
DONG Hai |
(Southwest China Institute of Electronic Technology, Chengdu 610036,China) |
Abstract: |
The modulation feature parameter recognition of radar signal is import
ant in electronic reconnaissance.The phasecoded signal can be detected and dec
oded by using recursive shorttime Fourier transform(STFT) and coherent integra
tion. Compare
d with routine ways, the new method can obtain preferable analytic result in low
er SNR. Finally the validity of the method is proved by computer simulation. |
Key words: electronic reconnaissance signal processing time frequency analysis short time Fourier transform(STFT) coherent integration |