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瞬时测频系统测LFM信号载频误差分析 被引量:3

Analysis for carrier frequency error in LFM signal measurement with IFM system
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摘要 线性调频(LFM)信号是当前雷达广泛应用的一种信号形式。传统的瞬时测频(IFM)系统无法分析LFM信号的内部频率情况,所以会影响对LFM信号的测频准确性。通过简要介绍IFM的基本原理,分析了多路鉴相器组合的IFM系统的解频率模糊方法。在此基础上建立IFM系统处理LFM信号的模型,分析了引起IFM系统对LFM信号测频误差的原因。通过对理论分析结果进行仿真验证,为工程实际中的瞬时测频技术提供了理论参考。 Linear frequency modulation(LFM)signal is a signal form widely used by radars. Since the traditional instanta?neous frequency measurement(IFM)system is unable to analyze the internal frequency structure of LFM signal,which can influence the frequency measurement accuracy of LFM signal,the fundamental of IFM is introduced briefly,and the frequency ambiguity reso?lution method of IFM system with multi-channel phase discriminators is analyzed. Based on this,the model of processing the LFM signal by IFM system was established,and the reason why frequency measurement error of LFM signal is generated by IFM system was analyzed. The results of theoretical analysis were simulated and verified,which provided a theoretical reference for IFM technology in engineering application.
出处 《现代电子技术》 北大核心 2015年第19期28-32,共5页 Modern Electronics Technique
关键词 瞬时测频 线性调频信号 测频误差 调频系数 instantaneous frequency measurement linear frequency modulation signal frequency measurement error fre-quency modulation coefficient
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  • 1刘祖深,王积勤.频率合成器中延时线鉴频技术研究[J].空军工程大学学报(自然科学版),2004,5(5):46-49. 被引量:4
  • 2董晖,姜秋喜,毕大平.数字侦察接收机中的瞬时频率测量技术[J].电子对抗技术,2005,20(5):7-10. 被引量:16
  • 3胡来招.瞬时测频[M].北京:国防工业出版社,2003..
  • 4胡来招.相干在测频中的应用[A].唐臻富.电子战新概念新理论新技术-(第十届学术年会论文集)[C].成都:电子工业部29所,2002.140-144.
  • 5Schleher D,Curtis. Electronic Warfare in the Information Age [M]. Boston:Artech House Radar library, 1999.
  • 6傅吉中.瞬时测频技术及其在我所的研究和应用的进程[J].电子侦察干扰,1988,4(3):26-31.
  • 7Merrill S.雷达手册[M].南京电子技术研究所,译.3版.北京:电子工业出版社,2010:310-311.
  • 8East P W.Fifty years of instantaneous frequency measurement[J].IET Radar,Sonar & Navigation,2012,6(2): 112-122.
  • 9Sandhyarani S,Kavith T.Design and implementation of DIFM algorithm in FPGA[J].Global Journal of Advanced Engineering Technologies,2013,2(3):83-88.
  • 10Prasanthi P,Kumar P R,Ksingh A,et al.FPGA implementation of time frequency algorithm for intrapulse modulation recognition of RADAR signals[J].International Journal of Emerging Trends in Engineering and Development,2012,7(2):571-578.

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