Document Abstract
The fundamental interaction of microwave radiation with the earth’s component like soil, water and
vegetation gives crucial information for the development of microwave remote sensing (MWRS) technique
and its applications. This interrelation is highly influenced by complex dielectric properties which act as a
bridge between MW responses and physical characteristics of parts of the crop vegetation (such as
sugarcane, grass etc.,). This paper investigates the laboratory measurements of complex dielectric
constant E′and dielectric lossE′′ of sugarcane leaves sample at room temperature (300 K) by using C - band
MW frequency and then analyses the difference in the complex dielectric constant with respect to
gravimetric moisture content. The calculation is performed by using Von – Hippel method. The data
obtained is then compared with different dielectric vegetation model. Here, we have compared the
experimental data with Carlson Formulaand Debye Dual dispersion model to check the accuracy of these
models with experimental responses of dielectric values for sugarcane leaves sample. Moving further,
Fresnel equation is used to theoretically evaluate the emissivity and brightness temperature from the
obtained values of dielectric constant at different angles for dry and moist sugarcane leaves. All the
parameters mentioned in this paper have been playing a vital role for the development of MW remote
sensing of sugarcane vegetation. It is found that with increase in the content of moisture, the value of
dielectric constant and dielectric loss also increases simultaneously. It has been also observe that Debye Cole
dual model is more suitable to study the dielectric properties for sugarcane sampled leaves than Carlson
formulation.