Simulation of realistic soils for 3-D computational models

• Published in: IGARSS 2003. 2003 IEEE International Geoscience and Remote Sensing Symposium. Proceedings (IEEE Cat. No.03CH37477) Vol. 4; pp. 2900 - 2902 vol.4
• Main Authors: Rouveure, R., Bacconnet, C., Chanet, M., Monod, M.-O.
• Format: Conference Proceeding
• Language: English
• Published: IEEE 2003
• Subjects: Compaction; Computational modeling; Density measurement; Dielectric measurements; Electromagnetic measurements; Electromagnetic modeling; Moisture; Permittivity measurement; Soil measurements; Volume measurement
• ISBN: 9780780379299; 0780379292
• DOI: 10.1109/IGARSS.2003.1294625

This paper investigates the problem of simulation of realistic soils for electromagnetic 3-D computational models. The major difficulty is to take into account the heterogeneous nature of real-life soils, which is an aggregate of random and regular structures, due to environmental (climatic conditions, etc.) or human (soil tillage) processes. The developed methodology uses 3-D measurements of pertinent soil parameters, able to describe the heterogeneity of real-life soils. It can be broken down into four main tasks: (a) 3-D measurement of soil parameter(s); (b) characterization of the 3-D spatial distribution of soil parameter(s); (c) simulation of 3-D volumes with the same spatial distribution; and (d) simulation of 3-D soil permittivity maps using electromagnetic mixing model. This methodology is illustrated with the example of soil density measurement, which is evaluated with the use of a motor-driven penetrometer.