Reconnaissance Signal Recognition of PN Code-Carrier FM Based on Spectral Correlation Method(Ⅱ)--The Modulation Recognition and Parameter Estimation of PN Code-Carrier FM
伪码-载波调频侦察信号识别的谱相关方法(Ⅱ)——伪码-载波调频信号的调制识别和参数估计

The reconnaissance signal recogniton of PN code-carrier FM based on Spectral Correlation (SC) method is studied, especially for Pseudo-Randorm Bi-phace Code (PRBC), SFM-PRBC and LFM-PRBC. Based on the character-extraction and analysis of the a-section of SC, the auto-classification of modulation class is investigated, and the carrier frequency and the parameter of FM are estimated. Further, the parameter of PN code are estimated. The influence of the noise and the limited-time of sampling is analyzed. Finally, the simulation shows the advantage of SC in the recognition of reconnaissance signal.