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偽碼-載波調(diào)頻偵察信號(hào)識(shí)別的譜相關(guān)方法(Ⅰ)偽碼-載波調(diào)頻信號(hào)的譜相關(guān)函數(shù)

熊剛,  趙惠昌,  林俊

熊剛, 趙惠昌, 林俊. 偽碼-載波調(diào)頻偵察信號(hào)識(shí)別的譜相關(guān)方法(Ⅰ)偽碼-載波調(diào)頻信號(hào)的譜相關(guān)函數(shù)[J]. 電子與信息學(xué)報(bào), 2005, 27(7): 1081-1086.
引用本文: 熊剛, 趙惠昌, 林俊. 偽碼-載波調(diào)頻偵察信號(hào)識(shí)別的譜相關(guān)方法(Ⅰ)偽碼-載波調(diào)頻信號(hào)的譜相關(guān)函數(shù)[J]. 電子與信息學(xué)報(bào), 2005, 27(7): 1081-1086.
Xiong Gang, Zhao Hui-chang, Lin jun. Reconnaissance Signal Recognition of PN Code-Carrier FM Based on Spectral Correlation Method(Ⅰ)Spectral Correlation Function of PN Code-Carrier FM[J]. Journal of Electronics & Information Technology, 2005, 27(7): 1081-1086.
Citation: Xiong Gang, Zhao Hui-chang, Lin jun. Reconnaissance Signal Recognition of PN Code-Carrier FM Based on Spectral Correlation Method(Ⅰ)Spectral Correlation Function of PN Code-Carrier FM[J]. Journal of Electronics & Information Technology, 2005, 27(7): 1081-1086.

偽碼-載波調(diào)頻偵察信號(hào)識(shí)別的譜相關(guān)方法(Ⅰ)偽碼-載波調(diào)頻信號(hào)的譜相關(guān)函數(shù)

Reconnaissance Signal Recognition of PN Code-Carrier FM Based on Spectral Correlation Method(Ⅰ)Spectral Correlation Function of PN Code-Carrier FM

  • 摘要: 研究了偽碼-載波調(diào)頻信號(hào)的譜相關(guān)函數(shù)（SCF），具體針對(duì)偽隨機(jī)二相編碼（PRBC）信號(hào)及其與正弦調(diào)頻和線性調(diào)頻復(fù)合信號(hào)進(jìn)行了研究。從譜相關(guān)函數(shù)和模糊函數(shù)（AF）的關(guān)系出發(fā)，利用平穩(wěn)隨機(jī)過(guò)程的線性周期時(shí)變變換定理，詳細(xì)推導(dǎo)了3種復(fù)合信號(hào)的譜相關(guān)函數(shù)表達(dá)式，分析了其特性。通過(guò)對(duì)頻率f截面和循環(huán)頻率截面譜相關(guān)特征分析表明，譜相關(guān)函數(shù)不僅能體現(xiàn)載波調(diào)制信息和與偽碼有關(guān)的各項(xiàng)參數(shù)，而且對(duì)于高斯白噪聲有很好的抑制作用，這為進(jìn)一步通過(guò)譜相關(guān)方法對(duì)偽碼-載波調(diào)頻信號(hào)的調(diào)制分類和參數(shù)識(shí)別奠定了理論基礎(chǔ)。
    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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  • Gini F, Giannakis G B. Frequency offset and timing estimation in slowly-varying fading channels: A cyclostationary approach[J].IEEE Trans. on Comm., 1998, COM-46(3): 400-411.[2]Serpedin E, Giannakis G B, et al.. Blind joint estimation of carrier frequency offset and channel using non-redundant periodic modulation procedures[A]. Statistical Signal and Array Processing, 1998, Proceedings Ninth IEEE SP Workshop[C].Beijing, 1998:288-291.[3]Mazzenga F, Vatalaro F. Parameter estimation in CDMA multiuser detection using cyclostationary statistics[J]. Electronics Letters, 1996(2): 179- 181.[4]Gardner W A, Spooner C M. Detection and sources location of weak cyclostationary signals: simplication of the maximumlikelihood receiver[J]. IEEE Trans. on Comm., 1993, COM41(6): 905-916.[5]Chin-Kang C, Gardner W A. Signal-selective ime-difference-ofarrival estimation for passive location of man-made signal sources in highly corruptive environments, part Ⅱ: Algorithms and performance[J]. IEEE Trans. on SP, 1992, SP-40(5):1185-1197.[6]朱曉華,是湘全.脈位調(diào)制脈沖串雷達(dá)信號(hào)理論與應(yīng)用研究.[博士論文],南京:南京理工大學(xué),2002,11.[7]Gardner W A. The spectral correlation theory of cyclostationary time-series. SignalProcessing, 1986, 11:13-36.[8]王宏禹著.非平穩(wěn)信號(hào)分析與處理.北京:國(guó)防工業(yè)出版社,1999.1.1.
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出版歷程
  • 收稿日期:  2004-01-12
  • 修回日期:  2004-09-27
  • 刊出日期:  2005-07-19

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