The Journal of Korean Institute of Electromagnetic Engineering and Science (한국전자파학회논문지)

The Korean Institute of Electromagnetic Engineering and Science (한국전자파학회)
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Study of Improvement of GMTI Performance Using DPCA and ATI

DPCA-ATI 결합을 이용한 GMTI 성능 향상에 대한 연구

  • Lee, Myung-Jun (Department of Electronic Engineering,, Pohang University of Science and Technology) ;
  • Lee, Seung-Jae (Department of Electronic Engineering,, Pohang University of Science and Technology) ;
  • Lim, Byoung-Gyun (Korea Aerospace Research Institute) ;
  • Oh, Tae-Bong (Korea Aerospace Research Institute) ;
  • Kim, Kyung-Tae (Department of Electronic Engineering,, Pohang University of Science and Technology)
  • 이명준 (포항공과대학교 전자전기공학과) ;
  • 이승재 (포항공과대학교 전자전기공학과) ;
  • 임병균 (한국항공우주연구원) ;
  • 오태봉 (한국항공우주연구원) ;
  • 김경태 (포항공과대학교 전자전기공학과)
  • Received : 2017.11.30
  • Accepted : 2018.02.08
  • Published : 2018.02.28
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Abstract

Using ground moving target indicators equipped with synthetic aperture radars for locating moving targets within a wide background clutter in a short time is an excellent method for monitoring traffic. Although the displaced phase center antenna (DPCA) technique and along track interferometry (ATI) are real time methods with low computational complexity, they are essential for reducing cases of false alarm that can result in poor performance. In this paper, we propose two detection methods using DPCA and ATI-the parallel fusion method and serial fusion method. Simulation results demonstrate that the proposed detection methods are characterized by low probability of false alarm along with good performance. In particular, the serial fusion method possesses high detection probability along with low probability of false alarm (1/5th of the false alarm probability of the DPCA technique).

지상 이동표적 탐지(gorund moving target indicator: GMTI)는 지상의 교통 통제등을 목적으로 하며, 주로 합성 개구면 레이다(synthetic aperture radar: SAR) 시스템을 이용하여 짧은 시간에 넓은 지형에 대하여 효율적인 이동표적 탐지를 수행한다. 특히 displaced phase center antenna(DPCA) 방법과 along track interferometry(ATI) 방법을 이용한 이동 표적 탐지는 적은 계산량에 의해서 실시간 GMTI에 적합한 탐지방법으로 많이 사용되고 있으나 높은 오경보율을 갖는 한계가 있으며 이를 해결하기 위한 연구가 필요하다. 본 논문에서는 기존의 DPCA 및 ATI의 결합을 이용한 병렬 결합 및 직렬 결합이동 표적 탐지 방법을 제안하고, 제안하는 이동 표적 탐지 방법이 낮은 오경보율의 향상된 탐지성능을 가진 것을 시뮬레이션을 통해 확인하였다. 특히 직렬결합을 이용한 이동 표적 탐지는 기존 DPCA의 오경보율과 비교하여 1/5수준의 오경보율을 가지며, 탐지율도 향상된 것을 볼 수 있다.

Keywords

References

  1. R. Deming, M. Best, and S. Farrell, "Simultaneous SAR and GMTI using ATI/DPCA," in Proceedings of the Algorithms for Synthetic Aperture Radar Imagery XXI, Baltimore, Maryland, Jun. 2014, vol. 9093, p. 90930U.
  2. Y. Hou, J. Wnag, X. Liu, K. Wnag, and Y. Gao, "An automatic SAR-GMTI algorithm based on DPCA," in 2004 IEEE Geoscience and Remote Sensing Symposium, Quebec City, Jul. 2014, pp. 592-595.
  3. G. Gao, G. Shi, "The CFAR detection of ground moving targets based on a joint metric of SAR interferogram's magnitude and phase," IEEE Transactions on Geoscience and Remote Sensing, vol. 50, no. 9, pp. 3618-3624, Sep. 2012. https://doi.org/10.1109/TGRS.2012.2184836
  4. E. Chapin, C. W. Chen, "Along-track interferometry for ground moving target indication," IEEE Aerospace and Electronic Systems Magazine, vol. 23, no. 6, pp. 19-24, Jul. 2008. https://doi.org/10.1109/MAES.2008.4558004
  5. W. Burger, "Space-time Adaptive Processing: Algorithms," NATO, RTO-EN-SET-086bis-07, Aug. 2007.
  6. S. Suchandt, H. Runge, H. Breit, U. Steinbrecher, A. Kotenkow, and U. Balss, "Automatic extraction of traffic flows using TerraSAR-X along-track interferometry," IEEE Transactions on Geoscience and Remote Sensing, vol. 48, no 2, pp. 807-819, Feb. 2010. https://doi.org/10.1109/TGRS.2009.2037919
  7. C. H. Gierull, "Ground moving target parameter estimation of two-channel SAR," in IEE Proceedings - Radar Sonar and Navigation, Jun. 2006, vol. 153, no. 3, pp. 224-233. https://doi.org/10.1049/ip-rsn:20045094
  8. 이명준, 이승재, 강병수, 유보현, 임병균, 오태봉, 김경태, "DPCA를 이용한 지상 이동 표적 탐지에서 클러터 종류에 따른 성능 비교," 한국전자파학회논문지, 28(6), pp. 487-496, 2017년 6월. https://doi.org/10.5515/KJKIEES.2017.28.6.487
  9. X. Yang, J. Wnag, "GMTI based on a combination of DPCA and ATI," in IET International Radar Conference 2015, Hangzhou, Oct. 2015.
  10. Y. Zhang, "Along track intererometry synthetic aperture radar(ATI-SAR) techniques for ground moving target detection," Defense Technical Information Center, AFRL-SN- RS-TR-2005-410, Jan. 2006.
  11. P. Z. Peebles, B. E. Shi, Probability, Random Variables and Random Signal Principles, 4th ed. New York, McGrawHill, pp. 51-54.
  12. B. R. Mahafza, Radar Systems Analysis and Design Using MATLAB, Chapman & Hall/CRC, 2012, p. 323.
  13. C. H. Gierull, "Statistical analysis of multilook SAR interferograms for CFAR detection of ground moving targets," IEEE Transactions on Geoscience and Remote Sensing, vol. 42, no 4, pp. 691-701, Apr. 2004. https://doi.org/10.1109/TGRS.2003.821886