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Time Frequency Analysis Application - Radar

Time Frequency Analysis Application - Radar. 電機四 B99901084 林晉毅 2013.12.12. Outline. Introduction Radar Signal Range Profile Time-Frequency Analysis of Radar Range Profiles Time-Frequency Representation of Range Profiles Time-Frequency-Based Radar Image Formation

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Time Frequency Analysis Application - Radar

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  1. Time Frequency Analysis Application - Radar 電機四 B99901084 林晉毅 2013.12.12

  2. Outline • Introduction • Radar Signal • Range Profile • Time-Frequency Analysis of Radar Range Profiles • Time-Frequency Representation of Range Profiles • Time-Frequency-Based Radar Image Formation • Fourier-Based Radar Image Formation • Time-Frequency-Based Radar Image Formation

  3. Introduction • RADAR(Radio Detection and Ranging)

  4. Introduction

  5. Introduction • Scattering

  6. Radar Signal • Linear Frequency Modulated Signal(LFM) • f0：carrier frequency • ：frequency-changing rate or chirprate • α ：determines the width of the Gaussian envelope

  7. Radar Signal

  8. Radar Signal • Stepped Frequency Signal(SF) • TPRI：Pulse Repetition Intreval

  9. Radar Signal

  10. Range Profile • Range Profile： a range-compressed back-scattered signal - the distribution of target reflectivity along the radar line of sight (LOS) to the target, provided target information about target length and position of strong scatterers.

  11. Cross Range Profile • Cross Range：the dimension transverse to the radar LOS • Doppler Profile  Cross Range Profile • 2D：Range-Doppler Profile  Range-Cross Range Profile(knowing scaling factor：rotation rate & λof transmitted signal)

  12. Doppler Profile

  13. Time-Frequency Analysis of Radar Range Profiles

  14. Time-Frequency Representation of Range Profiles

  15. Time-Frequency Representation of Range Profiles

  16. Time-Frequency Representation of Range Profiles 13.1GHz

  17. Time-Frequency Representation of Range Profiles TE20 TE10

  18. Time-Frequency-Based Radar Image Formation

  19. Fourier-Based Radar Image Formation

  20. Time-Frequency-Based Radar Image Formation

  21. Time-Frequency-Based Radar Image Formation

  22. Thank You For Your Attention

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