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Design of a Microwave Radiometer Receiver for Soil Moisture monitoring

토양 수분 모니터링용 마이크로파 라디오미터 수신기 설계

  • 손홍민 (호남대학교 대학원 전파공학과) ;
  • 박홍균 (호남대학교 대학원 전파공학과)
  • Received : 2013.11.05
  • Accepted : 2014.02.11
  • Published : 2014.02.28

Abstract

The development process of a L-Band microwave radiometer for remote sensing of soil-moisture are described in this paper. Achieving the development aim of the measurement accuracy within 2% for soil moisture content of 0~50%, the requirements and specifications of the microwave radiometer and its receiver are drawn. The receiver with high gain, high sensitivity is designed and implemented to satisfy these requirements and specifications. The receiver has the bandwidth of 40 MHz, the system gain of 50 dB and the sensitivity of average value 0.19 K, maximum value 0.313K at 1390 MHz.

본 논문은 토양에서 복사되는 마이크로파 대역의 미약한 열잡음 전력을 수신하여 토양 수분 함유량의 변화를 실시간으로 원격모니터링이 가능한 L-Band 마이크로파 라디오미터를 설계하는 내용에 관하여 기술한다. 토양 수분 함유량 0%~50%의 측정범위와 최대 오차 2%의 목표 성능을 달성하기 위해 토양 수분함유량에 따른 토양의 복사특성을 연구 및 목표 사양을 도출하였으며, 이를 바탕으로 도출된 사양을 만족시키는 마이크로파 라디오미터의 수신기를 설계 및 제작하였다. 제작된 수신기는 주파수 1390MHz, 대역폭 40MHz으로 50dB의 시스템 이득과 1.54dB의 NF를 가지며, 최대 0.313K, 평균 0.19K의 수신감도를 갖는다.

Keywords

References

  1. Y. A. Liou and A. W. England, "A land surface process/radiobrightness model with coupled heat and moisture transport in soil," IEEE Trans. Geosci. Remote Sensing, vol. 36, no. 1, Jan. 1998, pp. 273-286. https://doi.org/10.1109/36.655336
  2. E. Hong, "Soil moisture monitoring and recession characteristics analysis in conifer forest," The Korea Society of Agricultural Engineers, vol. 53, no. 4, 2011, pp. 1-9.
  3. T. J. Jackson, D. M. Le Vine, A. J. Griffis, D. C. Goodrich, T. J. Schmugge, C. T. Swift, and P. E. O'Neill, "Soil moisture and rainfall estimation over a semiarid environment with the ESTAR microwave radiometer," IEEE Trans. Geosci. Remote Sensing, vol. 31, no. 4, July 1993, pp. 836-841. https://doi.org/10.1109/36.239906
  4. K. Kim and N. Lee, "Measurement of Soil moisture content Using RF Impedance in the Range of 1 th 30MHz," The Korea Society of Agricultural Engineers, vol. 40, no. 14, 1998, pp. 79-88.
  5. F. T. Ulaby, R. K. Moore, and A. K. Fung, Microwave Remote Sensing Active and Passive volume I : Microwave Remote Sensing Fundamentals and Radiometry. Artech House Inc., 1981.
  6. H.-M. Son and J.-B. Yun, "Development of a microwave radiometer for remote sensing of water surface temperature," J. of Korean Institute of Electromagnetic Engineering and Science, vol. 23, no. 9, 2012, pp. 1107-1115. https://doi.org/10.5515/KJKIEES.2012.23.9.1107
  7. H.-M. Son and J.-B. Yun, " Development of a L-Band microwave radiometer for remote sensing of water surface salinity," J. of Korean Institute of Electromagnetic Engineering and Science, vol. 24, no. 9, 2013, pp. 900-907. https://doi.org/10.5515/KJKIEES.2013.24.9.900
  8. H.-M. Son and J.-W. Park, "Development of a microwave radiometer for remote sensing of oil spill on the water surface," J. of Korean Institute of Electromagnetic Engineering and Science, vol.22, no. 9, 2011, pp. 858-867. https://doi.org/10.5515/KJKIEES.2011.22.9.858
  9. D. M. Le Vine and M. Kao, "Remote sensing of ocean salinity : Result from the delaware coastal current experiment," J. of Atmosphere and Ocean Technology, vol. 15, Dec. 1998, pp. 1478-1484. https://doi.org/10.1175/1520-0426(1998)015<1478:RSOOSR>2.0.CO;2
  10. J.-P. Wigneron, L. Laguerre, and Y. H. Kerr, "A simple parameterization of L-Band microwave emission from rough agricultural soils," IEEE Trans. Geosci. Remote Sensing, vol. 39, no. 8, Aug. 2001, pp. 1697-1707. https://doi.org/10.1109/36.942548
  11. A. Guha, J. M. Jacobs, T. J. Jackson, M. Cosh, E. Hsu, and J. Judge, "Soil moisture mapping using ESTAR from the Southern Great Plains experiment," IEEE Trans. Geosci. Remote Sensing, vol. 41, no. 10, 2003, pp. 2392-2397. https://doi.org/10.1109/TGRS.2003.817187
  12. F. T. Ulaby, R. K. Moore, and A. K. Fung, Microwave Remote Sensing Active and Passive Volume III : From Theory and Applications. Artech House Inc., 1986.
  13. T. J. Jackson, T. J. Schmugge, P. E. O'Neill, and M. B. Parlange, "Soil water infiltration observation with microwave radiometers," IEEE Trans. Geosci. Remote Sensing, vol. 36, no. 5, Sep. 1998, pp. 1376-1383. https://doi.org/10.1109/36.718838
  14. Frequency Allocation Table of Korea, Korea Radio Promotion Association 2013.
  15. J.-Y. Hong, J.-M. Ju, S.-H. Han, and Y. Oh, "Numerical Analysis of the Ground Penetrating Radar's Return Signal for Mine Detection at Various Frequencies and Soil Conditions," J. of the Korean Institute of Electromagnetic Engineering and Science, vol. 23, no. 12, 2012, pp. 1412-1415. https://doi.org/10.5515/KJKIEES.2012.23.12.1412
  16. J.-W. Park, Y.-U. Choi, H.-L.Cho, and H.-M. Son, "Design and implementation of radio sensor receiver for measuring the position of the Sun," J. of the Korean Institute of Electromagnetic Engineering and Science, vol. 20, no. 9, 2009, pp. 943-953. https://doi.org/10.5515/KJKIEES.2009.20.9.943