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| Reconnaissance Signal Recognition of PN Code-Carrier FM Based on Spectral Correlation Method(Ⅰ)——Spectral Correlation Function of PN Code-Carrier FM |
| Xiong Gang①;Zhao Hui-chang①;Lin jun② |
| ①Department of Electronic Engineering, Nanjing University of Science and Technology, Nanjing 210094, China;②Communication Academy, PLA University of Science and Technology, China |
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Abstract The spectral correlation function of PN code-carrier FM is studied, especially for PRBC, SFM-PRBC and LFM-PRBC. Based on the relation between SCF and AF, and LPTV theory of stationary stochastic process, in detail, the SCF of the above three compound signals is derived respectively, whose characterization is also exploited. By the characteristic analyse of SCF of/-section and a -section, it shows that the SCF includes the information of carrier FM and PN code while the WGN is well suppressed, and all of those establish theoretic foundation for the signal recognition and parameter estimation of PN code-carrier FM based on the SC method.
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Received: 12 January 2004
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2005, Vol. 27 
