Post on 12-Feb-2016
description
Modeling of physical properties of lake ice by using microwave scatterometer and genetic algorithm
,
/
(Microwave Scatterometer) , , /
/ , , air bubble
air bubble ,
/ volume inhomogeneity
Microwave ScatterometerHH Polarization Square Horn AntennaCenter frequency: 5.3 GHz (C-band)Band width: 600 MHzSpatial resolution: 25 cmnotebookVNAGPIB-USBice surfaceincidence angle (45)standmicrowave cablesbeam width (15)
2006 2 2 ( )
: 2 m : 45: 40 cm
Calibration kit VNA Trihedral corner reflector
Calibration kit VNA Trihedral corner reflector
First returnSecondreturn
First return
surface water SecondreturnFirst return
surface water
First return
Scatterometer Measurement Model
Surface scattering Integral Equation Model (IEM)
Volume scattering , , Ice/water interface scattering/ ,
Inversion Modeling ,
(Genetic Algorithm)
: RMSE : RMSE = 0
Ice model
(1)First return Second return / RMSE = 0.0055 magnitudeNRMSE = 5.12%
(2)First return Second return RMSE = 0.0009 magnitudeNRMSE = 0.93 %
(2) -
(2) -
Surface water -
/ Second return / First return second return - , air bubble
/ SAR /
.
1.7, 0.13 mm