February 2013 | NTIA Technical Report TR-13-494
Nicholas DeMinco; Paul M. McKenna; Robert T. Johnk; Chriss A. Hammerschmidt; J. Wayde Allen; Linh P. Vu
Abstract: This report describes a free-field radio frequency (RF) measurement system that is currently being developed by engineers at the Institute for Telecommunication Sciences (NTIA/ITS). The objective is to provide estimates of the electrical properties of the ground (permittivity and conductivity) over which the measurement system is deployed. This measurement system uses reflection coefficient measurements at normal incidence over ground using a dual-ridged horn antenna placed close to and radiating directly down at the ground at specific antenna heights. Soil properties are extracted by comparing measured data with known analytical models for single and multilayer scenarios using optimization.
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Institute for Telecommunication Sciences
Disclaimer: Certain commercial equipment, components, and software may be identified in this report to specify adequately the technical aspects of the reported results. In no case does such identification imply recommendation or endorsement by the National Telecommunications and Information Administration, nor does it imply that the equipment or software identified is necessarily the best available for the particular application or uses.