Abstract：A time-frequency analysis method for reconnaissance signal recognition of PN and LFM is studied. Wigner time-frequency distribution function for PRBC-LFM reconnaissance signal is deduced. By WVD analysis，features related to carrier frequency, FM slope and PN parameters such as sub-pulse width, code-length and pulse cycle are extracted. Then a method for the parameter evaluation is presented. Finally, analysis results are simulated under Gaussian noise conditions. Simulation show the method is superior to spectral correlation method on PRBC-LFM signal recognition and not limited to relations between bandwidth of FM and spectral width of PN.
林俊, 熊刚, 王智学. 基于时频分析的伪码与线性调频复合体制侦察信号参数估计研究[J]. 电子与信息学报, 2006, 28(6): 1045-1048 .
Lin Jun, Xiong Gang, Wang Zhi-Xue. Study on Reconnaissance Signal Parameter Evaluation of PN and LFM Based on Time-Frequency Analysis. , 2006, 28(6): 1045-1048 .
2006, Vol. 28 
