Table 17.1.Remote sensing applications in irrigation and drainage vs. remote sensing observables and methods applied in data analysis
Multispectral
Multitemporal Reflectance spectra Spectral indices
surface
backscatter
microwave
Application
imlll!es
imal!es
temp~rature
coefficient
emissivity
Groundwater
Interpretation
interpretation
Water balance
potential
modelinl!
Evaluation
I
Interpretation;
image
planning surface numeric classification measurements
water
Irrigation potential Interpretation
Numeric
economic imp_act
classification
Irrigated arca
Numeric
classification
Land cover
I crops Numeric
Interpretation;
classification
numeric
classification
Water logging
Interpretation;
numeric classification
Irrigation
numeric
Energy balance
energy balance
performance
classification' GIS
Salinity
Interpretation
numeric
Principal
Numeric classiclassification
comoonents
fication' field data
Farm irrigation
Numeric
energy balance
manal!ement
classification
Management of
Interpretation
Interpretation;
Numeric
energy balance
irrigation systems
numeric classiclassification
fication
Hydrological
numeric
Semi-empirical
Numeric
energy balance semi-empirical
rad. transfer
modelling
classification
algorithms
classification; semialgoritluns; rad.
models
emp. algoritluns
transfer models
Land cover
Interpretation
numeric
mapping
classification
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8i
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