The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences
Publications Copernicus
Download
Citation
Articles | Volume XL-1/W1
Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci., XL-1/W1, 253–256, 2013
https://doi.org/10.5194/isprsarchives-XL-1-W1-253-2013
Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci., XL-1/W1, 253–256, 2013
https://doi.org/10.5194/isprsarchives-XL-1-W1-253-2013

  02 May 2013

02 May 2013

TRANSMISSION LINE THEORY BASED TWO LAYER MODEL FOR DETERMINING SOIL MOISTURE

P. Mishra and D. Singh P. Mishra and D. Singh
  • Department of Electronics and Computer Engineering, Indian Institute of Technology Roorkee, Roorkee Roorkee, (UK)-247667, India

Keywords: Soil Moisture, Impedance, Genetic Algorithm, Dielectric Constant

Abstract. Present paper deals with the task of estimating soil moisture under vegetation cover by using transmission line theory based two layer model. The two layer model measures the impedance of both the layers namely, soil and vegetation. This impedance is the function of dielectric constant and thickness of both the layers. For known dielectric constant and height of vegetation layer, dielectric constant of soil was determined for certain thickness of soil layer using genetic algorithm (GA). The soil moisture value was retrieved from dielectric constant of soil by using Topp et al., (1980) relationship. Retrieved soil moisture values were in good agreement with observed values.