한국군사과학기술학회지 (Journal of the Korea Institute of Military Science and Technology)

  • 제19권5호
  • /
  • Pages.582-589
  • /
  • 2016
  • /
  • 1598-9127(pISSN)
  • /
  • 2636-0640(eISSN)
한국군사과학기술학회 (The Korea Institute of Military Science and Technology)
권호 표지
DOI QR코드

DOI QR Code

고속 도플러 편이 환경에서 최적 시간지연을 갖는 다중모드 모노펄스 신호처리에 관한 연구

Study on Multi-Mode Monopulse Signal Processing System Providing Optimal Time Delay under High Doppler Condition

  • 이재문 (국방과학연구소 제2기술연구본부) ;
  • 임재성 (아주대학교 컴퓨터공학과) ;
  • 안희수 (LIG넥스원(주) 통신연구센터)
  • Lee, Jaemoon (The 2nd Research and Development Institute, Agency for Defense Development) ;
  • Lim, Jaesung (Department of Computer Engineering, Ajou University) ;
  • Ahn, Huisoo (Department of Communication, LIG Nex1)
  • 투고 : 2016.03.09
  • 심사 : 2016.08.19
  • 발행 : 2016.10.05
PDF 다운로드
⟨ 이전 논문 다음 논문 ⟩

초록

Multi-mode monopulse system is widely used for satellite terminal like UAV because of high tracking accuracy and low size/weight profile. In order to calculate tracking error, Multi-mode monopulse system utilizes high-order mode signal, and it should have enough C/N(carrier to noise) level therefore tracking system needs narrow band filtering of received satellite beacon signal as much as possible. However, UAV suffers for beacon frequency drift derived from Doppler effect due to satellite figure 8 movement and UAV maneuvering. Therefore wideband signal processing needs to be considered in advance for exact doppler compensation and consequent time delay. In this paper, we propose the multi-stage Digital Signal processing system for beacon signal, which could minimize the signal delay under high Doppler and low C/N condition.

키워드

참고문헌

  1. Kun-Sup Kwon, Jong-Wan Heo, Ki-Min Hwang, "A Design of Mode-Coupler with a Pair of Slots for Ka Band Multi-Mode Monopulse Tracking System," J. Korean Institute of Electromagnetic Engineering and Science(KIEES), pp. 158-164, Feb. 2015.
  2. G. J. Hawkins, D. J. Edwards, and J. P McGeehan, "Tracking Systems for Satellite Communications," Radar and Signal Processing, Vol. 135, No. 5, pp. 393-407, Oct. 1988. https://doi.org/10.1049/ip-f-1.1988.0047
  3. D. H. Park, C. H. Song, C. W. Jun, D. H. Park, G. H. Baek, and S. P. Kim, "A Multi-Mode Monopulse Tracking System for Satellite Communication," In Proc. KIEES Conf., p. 104, Incheon, Korea, Dec. 2009.
  4. D. H. Ga, D. H. Park, C. H. Song, S. J. Ahn, C. W. Jun, and J. M. Lee, "Design of a Higher-Order Mode Coupler Using Coaxial-Structure Waveguide for Ku-Band Monopulse Satellite Tracking," KICS, '14-04, Vol. 39C, No. 4, pp. 393-407, 2014.
  5. Dr. Lotfy Sakr, "The Higher Order Modes in the Feeds of the Satellite Monopulse Tracking Antennas," IEEE Melecon, Egypt Cairo, 2002.
  6. Boul Chandra Garai, Priyanka Das, Amit Kumar Mishra, "Group Delay Reduction in FIR Digital Filters," Signal Processing 91, pp. 1812-1825, 2011. https://doi.org/10.1016/j.sigpro.2011.02.005
  7. G. T. Kim, G. H. Cho, S. H. Jo, B. U. Nam, J. H. Lee, "Analysis for Tracking Performance of Mobile SATCOM Antenna using Monopulse Signal with Time Delay," Conference of Korea Miltary Science and Technology, Vol. 2015, pp. 1369-1370, 2015.
  8. Alan V. Oppenheim, Ronald W. Schafer "Discrete- Time Signal Processing," Prentice Hall, pp. 345-347, 1989.
  9. Gordon E. Carlson, "Signal and Linear System Analysis," Houghton Mifflin, pp. 606-612, 1992.
  10. Vinay K. Ingle, John G. Proakis, "Digital Signal Processing using MATLAB" THOMSON, p. 34, pp. 357-362, 2007.
  11. G. Maral, M. Bousquet, "Satellite Communications Systems, Systems, Techniques and Technology," 5th Edition, WILEY, 2009.