Chirp-rate resolution of fractional fourier transform in multi-component LFM signal

被引：0
|
作者：
Liu, Feng [1 ,2 ]
Huang, Yu [2 ]
Tao, Ran [1 ]
Wang, Yue [1 ]
机构：
[1] School of Information Science and Technology, Beijing Institute of Technology, Beijing 100081, China
[2] Department of Electronic Engineering, Naval Aeronautical Engineering Institute, Yantai 264001, China
来源：
Journal of Beijing Institute of Technology (English Edition) | 2009年 / 18卷 / 01期
关键词：
Signal sampling - Frequency modulation - Fourier transforms;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Distinguishing close chirp-rates of different linear frequency modulation (LFM) signals under concentrated and complicated signal environment was studied. Firstly, detection and parameter estimation of multi-component LFM signal were used by discrete fast fractional Fourier transform (FrFT). Then the expression of chirp-rate resolution in fractional Fourier domain (FrFD) was deduced from discrete normalize time-frequency distribution, when multi-component LFM signal had only one center frequency. Furthermore, the detail influence of the sampling time, sampling frequency and chirp-rate upon the resolution was analyzed by partial differential equation. Simulation results and analysis indicate that increasing the sampling time can enhance the resolution, but the influence of the sampling frequency can be omitted. What's more, in multi-component LFM signal, the chirp-rate resolution of FrFT is no less than a minimal value, and it mainly dependent on the biggest value of chirp-rates, with which it has an approximately positive exponential relationship. © A paper published in JBIT is protected by copyright.
引用
收藏
页码：74 / 78
相关论文
共 50 条
  • [1] Chirp-Rate Resolution of Fractional Fourier Transform in Multi-component LFM Signal
    刘锋
    黄宇
    陶然
    王越
    JournalofBeijingInstituteofTechnology, 2009, 18 (01) : 74 - 78
  • [2] Resolution Ability of Fractional Fourier Transform in Multi-component LFM Signal Chirp-rate
    Liu Feng
    Huang Yu
    Tao Ran
    Wang Yue
    2008 4TH INTERNATIONAL CONFERENCE ON WIRELESS COMMUNICATIONS, NETWORKING AND MOBILE COMPUTING, VOLS 1-31, 2008, : 1810 - +
  • [3] Resolution ability of fractional Fourier transform in multi-component Chirp signal center frequency
    Liu, Feng
    Huang, Yu
    Tao, Ran
    Wang, Yue
    Binggong Xuebao/Acta Armamentarii, 2009, 30 (01): : 14 - 18
  • [4] Multi-component LFM Signal Filtering Based on the Short-time Fractional Fourier Transform
    Xu Manman
    Tang Wei
    2013 32ND CHINESE CONTROL CONFERENCE (CCC), 2013, : 4507 - 4512
  • [5] Study on chirp-rate modulation and demodulation based on fractional Fourier transform
    Department of Electronic and Information Engineering, Naval Aeronautical and Astronautical University, Yantai 264001, China
    不详
    Tien Tzu Hsueh Pao, 2008, 6 (1078-1083):
  • [6] Pulse width estimation of multi-component chirp signal based on integration decomposition of fractional Fourier transform
    Li, Mingyue
    Zhang, Yue
    Wu, Wenzhen
    JOURNAL OF APPLIED REMOTE SENSING, 2020, 14 (04):
  • [7] Research on resolution between multi-component LFM signals in the fractional Fourier domain
    Feng Liu
    HuiFa Xu
    Ran Tao
    Yue Wang
    Science China Information Sciences, 2012, 55 : 1301 - 1312
  • [8] Research on resolution between multi-component LFM signals in the fractional Fourier domain
    LIU Feng 1
    2 The 94362 th Unit of People’s Liberation Army
    3 School of Information Science and Technology
    Science China(Information Sciences), 2012, 55 (06) : 1301 - 1312
  • [9] Research on resolution between multi-component LFM signals in the fractional Fourier domain
    Liu Feng
    Xu HuiFa
    Tao Ran
    Wang Yue
    SCIENCE CHINA-INFORMATION SCIENCES, 2012, 55 (06) : 1301 - 1312
  • [10] Multiple chirp-rate shift keying and a demodulation method based on fractional Fourier transform
    Zhao, Qi-Ming
    Zhang, Qin-Yu
    Zhang, Nai-Tong
    Tongxin Xuebao/Journal on Communications, 2010, 31 (06): : 1 - 6
12345