基于S变换的无线电引信信号分析
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摘要
为了更好地揭示无线电引信的信号特征,文中引进S变换对信号进行时频分析,并通过对典型的跳频信号、连续波多普勒信号进行时间、频率等特征参数的仿真分析,结果表明相比于短时Fourier变换和小波变换,S变换在时域、频域和能量域都能精细地揭示信号的特征,为无线电引信信号分析提供了一个良好的时频分析手段,也为引信采取最优的信号处理方法提供依据.
In order to reveal signal features of radio fuze,S transform is applied in analyzing the time-frequency of signals.A simulation analysis is made of such characteristic parameters as time and frequency of the typical frequency hopping signal and continuous wave Doppler signal.The results indicate that ST can better reveal signal features on time domain,frequency domain and energy domain than Short Time Fourier Transform and Wavelet Transform do.The research result provides not only a good method for analyzing time-frequency of radio fuze signals,but also an evidence for taking an optimal method for signal processing of fuze.
In order to reveal signal features of radio fuze,S transform is applied in analyzing the time-frequency of signals.A simulation analysis is made of such characteristic parameters as time and frequency of the typical frequency hopping signal and continuous wave Doppler signal.The results indicate that ST can better reveal signal features on time domain,frequency domain and energy domain than Short Time Fourier Transform and Wavelet Transform do.The research result provides not only a good method for analyzing time-frequency of radio fuze signals,but also an evidence for taking an optimal method for signal processing of fuze.
引文
[1]权建峰,郭东敏.基于小波变换的频率捷变引信信号分析[J].探测与控制学报,2005,27(1):13.QUAN Jian-feng,GUO Dong-min.Analysis of theFrequency Agile Fuze Signal by Using WaveletTransfort[J].Journal of Detection&Control,2005,27(1):13.(in Chinese)
[2]刘振明,顾汉明,詹凤林.S变换时频分析在隧道岩溶地震勘探解释中的应用[J].工程地球物理学报,2010,7(1):50.LIU Zhen-ming,GU Han-ming,ZHAN Feng-lin.Application of S-Transform Time-Frequency Analysis inSeismic Prospection Interpretation for Karst UnderTunnel[J].Chinese of Journal of Engineering Geophys-ics,2010,7(1):50.(in Chinese)
[3]刘保童.S变换与小波变换检测信号突变性研究[J].天水师范学院学报,2006,26(2):28.LIU Bao-tong.Research on Detecting AbruptChanges of Signal Via S Transform and WaveletReansform[J].Journal of Tianshui Normal Univerty,2006,26(2):28.(in Chinese)
[4]谭阳红,何怡刚,雷可君.射频信号的S变换检测[J].计算机工程与科学,2010,32(3):124.TAN Yang-hong,HE Yi-gang,LEI Ke-jun.RF SignalDetection Based on the S Transform[J].ComputerEngineering&Science,2010,32(3):124.(in Chinese)
[5]刘继承,常正胜.基于广义S变换的地震高分辨率分析[J].自动化技术与应用,2009,28(10):56.LIU Ji-cheng,CHANG Zheng-sheng.Study on High-Resolution Seismic Based on Generalized Stransform[J].Techniques of Automation&Application,2009,28(10):56.
[6]徐红梅,郝志勇,贾维新,等.基于S变换的内燃机车噪声信号时频特性[J].江苏大学学报:自然科学版,2008,29(2):115.XU Hong-mei,HAO Zhi-yong,JIA Wei-xin,et al.Time-frequency Characteristics of Noise SignalsBased on S Transform for Internat CombustionEngine[J].Journal of Jiangsu University:NaturalScience Edition,2008,29(2):115.(in Chinese)
[7]辛欣,张效民.基于S-变换的水中目标特征提取[J].电声基础,2007,31(1):10.XIN Xin,ZHANG Xiao-min.Feature Extraction ofUnderwater Target Based on S-transform[J].Elementary Electroacoustics,2007,31(1):10.(in Chinese)
[2]刘振明,顾汉明,詹凤林.S变换时频分析在隧道岩溶地震勘探解释中的应用[J].工程地球物理学报,2010,7(1):50.LIU Zhen-ming,GU Han-ming,ZHAN Feng-lin.Application of S-Transform Time-Frequency Analysis inSeismic Prospection Interpretation for Karst UnderTunnel[J].Chinese of Journal of Engineering Geophys-ics,2010,7(1):50.(in Chinese)
[3]刘保童.S变换与小波变换检测信号突变性研究[J].天水师范学院学报,2006,26(2):28.LIU Bao-tong.Research on Detecting AbruptChanges of Signal Via S Transform and WaveletReansform[J].Journal of Tianshui Normal Univerty,2006,26(2):28.(in Chinese)
[4]谭阳红,何怡刚,雷可君.射频信号的S变换检测[J].计算机工程与科学,2010,32(3):124.TAN Yang-hong,HE Yi-gang,LEI Ke-jun.RF SignalDetection Based on the S Transform[J].ComputerEngineering&Science,2010,32(3):124.(in Chinese)
[5]刘继承,常正胜.基于广义S变换的地震高分辨率分析[J].自动化技术与应用,2009,28(10):56.LIU Ji-cheng,CHANG Zheng-sheng.Study on High-Resolution Seismic Based on Generalized Stransform[J].Techniques of Automation&Application,2009,28(10):56.
[6]徐红梅,郝志勇,贾维新,等.基于S变换的内燃机车噪声信号时频特性[J].江苏大学学报:自然科学版,2008,29(2):115.XU Hong-mei,HAO Zhi-yong,JIA Wei-xin,et al.Time-frequency Characteristics of Noise SignalsBased on S Transform for Internat CombustionEngine[J].Journal of Jiangsu University:NaturalScience Edition,2008,29(2):115.(in Chinese)
[7]辛欣,张效民.基于S-变换的水中目标特征提取[J].电声基础,2007,31(1):10.XIN Xin,ZHANG Xiao-min.Feature Extraction ofUnderwater Target Based on S-transform[J].Elementary Electroacoustics,2007,31(1):10.(in Chinese)
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