Journal of electromagnetic engineering and science

  • 제5권4호
  • /
  • Pages.183-188
  • /
  • 2005
  • /
  • 2671-7255(pISSN)
  • /
  • 2671-7263(eISSN)
한국전자파학회 (The Korean Institute of Electromagnetic Engineering and Science)
권호 표지

A Simple Microwave Backscattering Model for Vegetation Canopies

  • Oh Yisok (Department of Electrical and Electronic Engineering, Hongik University) ;
  • Hong Jin-Young (Department of Electrical and Electronic Engineering, Hongik University) ;
  • Lee Sung-Hwa (Samji Electronics Co., Ltd.)
  • 발행 : 2005.12.01
PDF 다운로드
⟨ 이전 논문 다음 논문 ⟩

초록

A simple microwave backscattering model for vegetation canopies on earth surfaces is developed in this study. A natural earth surface is modeled as a two-layer structure comprising a vegetation layer and a ground layer. This scattering model includes various scattering mechanisms up to the first-order multiple scattering( double-bounce scattering). Radar backscatter from ground surface has been modeled by the polarimetric semi-empirical model (PSEM), while the backscatter from the vegetation layer modeled by the vector radiative transfer model. The vegetation layer is modeled by random distribution of mixed scattering particles, such as leaves, branches and trunks. The number of input parameters has been minimized to simplify the scattering model. The computation results are compared with the experimental measurements, which were obtained by ground-based scatterometers and NASA/JPL air-borne synthetic aperture radar(SAR) system. It was found that the scattering model agrees well with the experimental data, even though the model used only ten input parameters.

키워드

참고문헌

  1. F. T. Ulaby, K. Sarabandi, K. McDonald, M. Whitt and M. C. Dobson, 'Michigan microwave canopy scattering model', Int. J. Remote Sensing, vol. 11, no. 7, pp. 1223-1253, 1990 https://doi.org/10.1080/01431169008955090
  2. M. A. Karam, A. K. Fung, R. H. Lang, and N. S. Chauhan, 'A microwave scattering model for layered vegetation', IEEE Trans. Geosci. Remote Sensing, vol. 30, no. 4, pp. 767-784, Jul. 1992 https://doi.org/10.1109/36.158872
  3. L Tsang, J. A. Kong, and R. T. Shin, Theory of Microwave Remote Sensing, John Wiley & Sons, 1985
  4. Y. Oh, K. Sarabandi, and F.T. Ulaby, 'An empirical model and an inversion technique for radar scattering from bare soil surfaces', IEEE Trans. Geosci. Remote Sensing, vol. 30, pp. 370-382, Mar. 1992 https://doi.org/10.1109/36.134086
  5. Y. Oh, K. Sarabandi, and F. T. Ulaby, 'Semi- empirical model of the ensemble-averaged differential mueller matrix for microwave backscattering from bare soil surfaces', IEEE Trans. Geosci. Remote Sensing, vol. 40, no. 6, pp. 1348-1355. Jun. 2002 https://doi.org/10.1109/TGRS.2002.800232
  6. Y. Oh, 'Quantitative retrieval of soil moisture content and surface roughness from multipolarized radar observations of bare soil surfaces', IEEE Trans. Geosci. Remote Sensing, vol. 42, no. 3, pp. 596-601, Mar. 2004 https://doi.org/10.1109/TGRS.2003.821065
  7. F. T. Ulaby, C. Elachi, Radar Polarimetry for Geoscience Applications, Artech House, 1990
  8. Y. Oh, 'Comparative evaluation of two analytical models for microwave scattering from deciduous leaves', Korea Journal of Remote Sensing, vol. 20, no. 1, pp. 39-46, Feb. 2004
  9. F. T. Ulaby, M. A. El-rayes, 'Microwave dielectric spectrum of vegetation-Part II: Dual-dispersion model', IEEE Trans. Geosci. Remote Sensing, vol. GE-25, pp. 550-557, 1987 https://doi.org/10.1109/TGRS.1987.289833