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    Model ID: M00034
    Model Name: first-order model
    Encoders:
    No. Name Affiliations
    1
    Chai Linna
    chai@bnu.edu.cn
    Key words: Passive microwave. Canopy structure, ground parameter, first-order radiative transfer solution
    Model Type: Theoretical model
    Latest Modified:
    Submission Date:
    Abstract: The first-order model simulates the passive microwave signals in terms of the energy equilibrium. Compared to the zeroth-order model, i.e. ω-τ model, it consider the first-order volume scattering in the vegetation. So the model can be applied to denser vegetation.
    Equation:
    1
    Name: frequency
    Parameter type: double
    Physic Entity: simulated emitted frequency of vegetation
    2
    Name: Ground temperature
    Parameter type: double
    Physic Entity: Description of Ground temperature
    3
    Name: soil moisture
    Parameter type: double
    Physic Entity: Description of soil moisture
    4
    Name: Soil roughness standard
    Parameter type: double
    Physic Entity: Description of soil roughness
    5
    Name: Soil roughness average slope
    Parameter type: double
    Physic Entity: Description of soil roughness
    6
    Name: Canopy depth
    Parameter type: double
    Physic Entity: Canopy depth, excluding stalk
    7
    Name: Vegetation temperature
    Parameter type: double
    Physic Entity: Average temperature within the vegetation
    8
    Name: Leaf radius
    Parameter type: double
    Physic Entity: Statistically average radius of round leaf
    9
    Name: Leaf thickness
    Parameter type: double
    Physic Entity: Statistically average thickness of round leaf
    10
    Name: Leaf density
    Parameter type: double
    Physic Entity: Statistically average leaf number per unit
    11
    Name: leaf moisture
    Parameter type: double
    Physic Entity: Statistically average leaf moisture
    12
    Name: Branch cross-section radius
    Parameter type: double
    Physic Entity: Statistically average branch cross-section radius radius
    13
    Name: Branch height
    Parameter type: double
    Physic Entity: Statistically average branch height
    14
    Name: Branch density
    Parameter type: double
    Physic Entity: Statistically average branch number per unit
    15
    Name: Branch moisture
    Parameter type: double
    Physic Entity: Statistically average
    16
    Name: Simulated V polarization brightness
    Parameter type: double
    Physic Entity: The result, V polarization brightness
    17
    Name: Simulated H polarization brightness
    Parameter type: double
    Physic Entity: The result, H polarization brightness
    Title: Electromagnetic wave scattering from some vegetation samples.
    Authors:
    No. Name Affiliations
    1
    Karam.M.A
    2
    Fung.A.K
    3
    Antar. Y.M.M.
    Cited by: IEEE Transactions on Geoscience and Remote Sensing
    Abstract: For an incident plane wave, the field inside a thin scatterer (disk and needle) is estimated by the generalized Rayleigh-Gans (GRG) approximation. This leads to a scattering amplitude tensor equal

    Equation