The purpose of this paper is to study about the interrelationship between the backscattering intensity of PALSAR data and the laboratory measurement of dielectric constant and soil moisture. The characterization of the dielectric constant of arid soils in the 0.3 – 3 GHz frequency range, particularly focused in L-band was analyzed in varied soil moisture content and soil textures. The interrelationship between the relative dielectric constant with soil textures and backscattering of PALSAR data was also analyzed and statistical model was computed. In this study, after collecting the soil samples in the field from top soil (0 – 10 cm) in a homogeneous area then, the dielectric constant was measured using a dielectric probe tool kit. For investigated of the characteristics and behaviors of the dielectric constant and relationship with backscattering a variety of moisture content from 0% to 40% and soil fraction conditions was tested in laboratory condition. All data were analyzed by integrating it with other geophysical data in GIS, such as land cover and soil texture. Thus, the regression model computed between measured soil moisture and backscattering coefficient of PALSR data which were extracted as same point of each soil sample pixel. Finally, after completing the preprocessing, such as removing the speckle noise by averaging, the model was applied to the PALSAR data for retrieving the soil moisture map in arid region of Iran. The analysis of dielectric constant properties result has shown the soil texture after the moisture content has the largest effected on dielectric constant. In addition, the PALSAR data in dual polarization are also able to derive the soil moisture using statistical method. The dielectric constant and backscattering shown have the exponential relationship and the HV polarization mode is more sensitive than the HH mode to soil moisture and overestimated the soil moisture as well. The validation of result has shown the 4.2 Vol-% RMSE of soil moisture. It means that the backscattering analysis should consider about other factors such a surface roughness and mix pixel of vegetation effective.
Cite this paper
|||Ghosh, A., Bihari, J. and Pyne, S. (1998) Dielectric Parameters of Dry and Wet Soils at 14.89 GHz. Indian Journal of Radio & Space Physics, 27, 130-134.|
|||Usowicz, B., Marczewski, W., Usowicz, J.B. and Lipiec, J. (2010) Statistical Modelling of the Soil Dielectric Constant. Geophysical Research Abstracts, 12, EGU2010-6749.|
|||Lee, E., Chase, T.N., Rajagopalan, B., Barry, R.G., Biggs, T.W. and Lawrence, P.J. (2009) Effects of Irrigation and Vegetation Activity on Early Indian Summer Monsoon Variability. International Journal of Climatology, 573-558.
|||Curtis, J.O. (2001) Moisture Effects on the Dielectric Properties of Soils. IEEE Transaction on Geoscience and Remote Sensing, 39, 125-128.|
|||Calla, O.P.N. and Singh, R.K. (2002) Emission Characteristics of Dry and Wet Loamy Sand Soil Layered Packed at Microwave Frequency. Indian Journal of Radio & Space Physics, 31, 285-292.|
|||Hallikainen, M.T., Ulaby, F.T., Dobson, M.C., El-Rayes, M.A. and Wu, L.-K. (1985) Microwave Dielectric Behavior of Wet Soil—Part I: Empirical Models and Experimental Observations. IEEE Transactions on Geoscience and Remote Sensing, GE-23, 25-34.
|||Wang, L. and QU, J.J. (2009) Satellite Remote Sensing Applications for Surface Soil Moisture Monitoring: A Review. Frontiers of Earth Science in China, 3, 237-247.
|||Campbell, J.E. (1990) Dielectric Properties and Influence of Conductivity in Soils at One to Fifty Megahertz. Soil Science Society of America Journal, 54, 332-341.
|||Arya, L.M. and Paris, J.F. (1981) A Physicoempirical Model to Predict the Soil Moisture Characteristic from Particle-Size Distribution and Bulk Density Data. Soil Science Society of America Journal, 45, 1023-1030.
|||Wang, J.R. and Schmugge, T.J. (1980) An Empirical Model for the Complex Dielectric Permittivity of Soils as a Function of Water Content. IEEE Transactions on Geoscience and Remote Sensing, 18, 288-295.
|||Haillikainen, M., Ulaby, F.T., Dobson, M.C., El-Rayes, M.A. and Wu, L.K. (1985) Microwave Dielectric Behavior of Wet Soil-Part 1: Empirical Models and Experimental Observations. IEEE Transactions on Geoscience and Remote Sensing, GE-23, 25-34.|
|||Dobson, M.C., Ulaby, F.T., Hallikainen, M.T. and El-Rayes, M.A. (1985) Microwave Dielectric Behavior of Wet Soil- Part II: Dielectric Mixing Models. IEEE Transactions on Geoscience and Remote Sensing, GE-23, 35-46.
|||Chaudhari, H.C. and Shinde, V.J. (2012) Dielectric Properties of Soil at X-Band Microwave Frequency. Indian Journal of Pure and Applied Physics, 50, 64-66.|
|||Peplinski, N.R., Ulaby, F.T. and Dobson, M.C. (1995) Dielectric Properties of Soils in the 0.3-1.3-GHz Range. IEEE Transactions on Geoscience and Remote Sensing, 33, 803-807.|
|||Gadani, D.H. and Vyas, A.D. (2008) Measurement of Complex Dielectric Constant of Soils of Gujarat at X- and C-Band Microwave Frequencies. Indian Journal of Radio & Space Physics, 37, 221-229.|
|||Baghdadi, N., Aubert, M., Cerdan, O., Franchisteguy, L., Viel, C., Eric, M., Zribi, M. and Desprats, J.F. (2007) Operational Mapping of Soil Moisture Using Synthetic Aperture Radar Data: Application to the Touch Basin (France). Sensors, 7, 2458-2483.
|||Li, Y.Y., Zhao, K., Ren, J.H., Ding, Y.L. and Wu, L.L. (2014) Analysis of the Dielectric Constant of Saline-Alkali Soils and the Effect on Radar Backscattering Coefficient: A Case Study of Soda Alkaline Saline Soils in Western Jilin Province Using RADARSAT-2 Data. The Scientific World Journal, 2014, 1-14.
|||Anguela, T.P., Zribi, M., Baghdadi, N. and Loumagne, C. (2010) Analysis of Local Variation of Soil Surface Parameters with TerraSAR-X Radar Data over Bare Agriculture Fields. IEEE Transactions on Geoscience and Remote Sensing, 48, 874-881.
|||Wignerona, J.P., Calvetb, J.C., Pellarinb, T., Van de Griendc, A.A., Bergerd, M. and Ferrazzolie, P. (2003) Retrieving Near-Surface Soil Moisture from Microwave Radiometric Observations: Current Status and Future Plans. Remote Sensing of Environment, 85, 489-506.
|||Bolten, J.D., Lakshmi, V. and Njoku, E.G. (2003) Soil Moisture Retrieval Using the Passive/Active L- and S-Band Radar/Radiometer. IEEE Transactions on Geoscience and Remote Sensing, 41, 2792-2801.
|||Japan Aerospace Exploration Agency (2009) PALSAR Calibration Factor Updated.
|||Agilent. http://www.keysight.com eww150215lx|