论文信息 - Comparison of measured C-band scattering coefficients with model predictions as a function of leaf area index and biomass

Comparison of measured C-band scattering coefficients with model predictions as a function of leaf area index and biomass

The backscattering coefficients for Black Spruce and Aspen at an incidence angle of 50 degrees obtained using a helicopter mounted C-band scatterometer are related to leaf area index and biomass for several dates while leaves are present. These data are compared with estimates obtained from the Fung disk model for aspen. Implications for spacecraft SAR (eg SIR-C) systems and their ability to determine biophysical characteristics of forest canopies are discussed in light of these results.

[1] V. Ramanathan. The Greenhouse Theory of Climate Change: A Test by an Inadvertent Global Experiment , 1988, Science.

[2] Fawwaz T. Ulaby,et al. Relating the microwave backscattering coefficient to leaf area index , 1984 .

[3] D. S. Simonett,et al. Vegetation analysis with radar imagery. , 1966 .

[4] Stephen Wall,et al. Multiple Incidence Angle SIR-B Experiment Over Argentina: Mapping of Forest Units , 1986, IEEE Transactions on Geoscience and Remote Sensing.

[5] Gautam D. Badhwar,et al. The use of a helicopter mounted ranging scatterometer for estimation of extinction and scattering properties of forest canopies. II. Experimental results for high-density aspen , 1988 .

[6] R. Kerr. The Weather in the Wake of El Nino: This El Nino is disappearing as it releases its hold on the world's weather; it was a sobering experience. , 1988, Science.

[7] M. Imhoff,et al. Forest Canopy Characterization and Vegetation Penetration Assessment with Space-Borne Radar , 1986, IEEE Transactions on Geoscience and Remote Sensing.

[8] D. E. Pitts,et al. The use of a helicopter mounted ranging scatterometer for estimation of extinction and backscattering properties of forest canopies. I. Experimental approach and calibration , 1988 .

[9] W. P. Waite,et al. Use of Seasat satellite radar imagery for the detection of standing water beneath forest vegetation , 1981 .