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Institute of Korean Electrical and Electronics Engineers (한국전기전자학회)
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Analysis of High Resolution Range Estimation for Moving Target Using Stepped Frequency Radar with Coherent Pulse Train

코히어런트 펄스열을 갖는 계단 주파수 레이더를 이용한 이동표적의 고해상도 거리 추정 분석

  • Received : 2018.08.25
  • Accepted : 2018.09.18
  • Published : 2018.09.30
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Abstract

A Stepped Frequency Radar(SFR) is a method that realizes high resolution range estimation by increasing the frequency of transmission pulses at regular intervals to generate a wide synthetic bandwidth. However, in the case of a moving target, accurate range estimation becomes difficult due to the range-Doppler coupling. In this paper, the process of high resolution range estimation by compensation of the range-Doppler coupling with estimated velocity of the moving target using the SFR waveform with Coherent Pulse Train(CPT) is analyzed and it was verified through simulation.

계단 주파수 레이더는 송신 펄스의 주파수를 일정한 간격으로 증가시켜 넓은 합성 대역폭을 생성함으로써 고해상도 거리추정을 구현하는 방식이다. 그러나 이동표적의 경우에는 거리-도플러 결합 현상으로 인해 정확한 거리 추정이 어렵게 된다. 본 논문에서는 초기에 코히어런트 펄스열을 갖는 계단 주파수 레이더 파형을 이용하여 이동표적의 속도를 추정하고, 거리-도플러 결합 현상을 보상함으로써 얻어지는 고해상도 거리 추정 과정을 분석하고, 시뮬레이션을 통해 이를 검증하였다.

Keywords

References

  1. J. H. Sim and K. S. Bae, “Coherent Pulse Train Based Velocity Estimation and Compensation for High Resolution Range Profile of Moving Target in Stepped Frequency Radar,” j.inst. korean.electr.electron.eng, Vol. 22, No. 2, pp. 309-315, 2018. DOI:10.1016/j.sigpro.2011.04.022
  2. Gang Li, Huadong Meng, Xiang-Gen Xia and Ying-Ning Peng, "Range and Velocity Estimation of Moving Targets Using Multiple Steppedfrequency Pulse Trains," Sensors 2008, pp. 1343-1350, 2008. DOI:10.3390/s8021343
  3. Thomas Feuillen, Achraf Mallat and Luc Vandendorpe, "Stepped Frequency Radar for Automotive Application: Range-Doppler Coupling and Distortions Analysis," Milcom 2016 Track 1, Waveforms and Signal Processing, 2016. DOI:10.1109/MILCOM.2016.7795443
  4. J. H. Sim and K. S. Bae, "Analysis of DFT Based Velocity Estimation Method for Moving Target in Pulsed Radar," JCCI 2018, The 28th Joint Conference on Communications and Information, p.55, 2018.
  5. Mathuranathan Viswanathan, "How to generate AWGN noise in Matlab/Octave(without using inbuilt awgn function)," https://www.gaussianwaves.com/gaussianwaves/wp-content/uploads/2015/06/How_to_generate_AWGN_noise.pdf.
  6. J. H. Sim and K. S. Bae, "A Study on the Method of Moving Target Velocity Estimation through Doppler Analysis in Stepped Frequency Radar," 2017 IEIE Academic Symposium, pp. 21-22, 2017.
  7. C. Fukushima and N. Hamada, "A Study on Stepped Frequency Radar by using Intra-Pulse Phase Coded Modulation," Proceedings of the World Congress on Engineering and Computer Science, 2008.
  8. Yimin Liu, Tianyao Huang, Huadong Meng, XiqinWang, "Fundamental Limits of HRR Profiling and Velocity Compensation for Stepped-Frequency Waveforms," IEEE Transactions on Signal Processing, Vol. 62, No. 17, pp. 4490-4504, 2014. DOI:10.1109/TSP.2014.2337279
  9. Mark A. Richards, "Fundamentals of Radar Signal Processing," Second Edition, McGraw-Hill, New York, 2014.
  10. J. H. Sim, S. W. Hyung, S. M. Park and K. S. Bae, "A Study on the Range Estimation of Moving Target with Stepped Frequency Radar," 2016 IEIE Fall Conference, pp. 357-358, 2016.