| 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 |
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| 引用本文： | 熊刚,赵惠昌,王李军.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[J].电子与信息学报,2005,27(7):1087-1092. |
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| 作者姓名： | 熊刚 赵惠昌 王李军 |
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| 作者单位： | 南京理工大学电子工程系,南京,210094;南京理工大学电子工程系,南京,210094;南京理工大学电子工程系,南京,210094 |
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| 摘 要： | 研究了伪码-载波调频侦察信号识别的谱相关方法,具体针对伪随机二相编码(PRBC)信号及其与正弦调频和线性调频复合信号作了研究。通过3种复合信号循环谱截面谱相关特征的分析和提取,完成了调制类型的自动识别,估计了载频和载波调频参数,对伪随机码信号的各项参数进行了估计。分析了噪声环境和有限采集时间对参数估计的影响,最后对调制识别和参数估计进行仿真分析,表明了谱相关方法在伪码-载波调频信号识别中的优势。
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| 关 键 词： | 调制识别 参数估计 谱相关 线性调频 |
| 文章编号： | 1009-5896(2005)07-1087-06 |
| 收稿时间： | 2004-1-12 |
| 修稿时间： | 2004年1月12日 |
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 |
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| XIONG Gang,ZHAO Hui-chang,Wang Li-jun.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[J].Journal of Electronics & Information Technology,2005,27(7):1087-1092. |
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| Authors: | XIONG Gang ZHAO Hui-chang Wang Li-jun |
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| Institution: | Department of Electronic Engineering, Nanjing University of Science and Technology, Nanjing 210094, China |
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| Abstract: | 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. |
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| Keywords: | Modulation recognition Parameter estimation Spectral Correlation(SC) LFM |
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