Share Email Print

Proceedings Paper

Microwave polarimetric scatterometer as a tool for monitoring topsoil moisture
Author(s): Angelo Canio D'Alessio; Claudia Notarnicola; Francesco Posa; Giuseppe Calbi; Domenico Casarano; Antonio Mongelli; Vincenzo Sabatelli
Format Member Price Non-Member Price
PDF $14.40 $18.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

Microwave remote sensing is a good tool for topsoil moisture monitoring due to the large difference between dielectric properties of dry soil and water. The aim of this work is to exploit microwave remote sensing techniques to collect data on soil water content of large areas rapidly and without direct soil samples analysis. To this purpose, a frequency modulated - continuous wave C-band microwave polarimetric radar has been built. The device has two transmitting channels that illuminate the soil with orthogonal linearly polarized electromagnetic waves. Two receiving channels detect the linearly polarized waves backscattered from the same target. This scatterometer can measure the module of the soil electromagnetic scattering matrix elements. The knowledge of this matrix permits the computation of all the possible polarization combinations of backscattering normalized Radar Cross Section (RCS) through a polarization synthesis approach. A Fourier analysis of this signal extracts the scattering matrix values of different-in-range resolution cells. The height and the incidence angle of this microwave sensor can be varied within large intervals; this allows the measurements of the RCS in various configurations that should give insights on soil moisture parameter extraction under different conditions.

Paper Details

Date Published: 27 November 2001
PDF: 10 pages
Proc. SPIE 4491, Subsurface and Surface Sensing Technologies and Applications III, (27 November 2001); doi: 10.1117/12.450174
Show Author Affiliations
Angelo Canio D'Alessio, Politecnico di Bari and INFM (Italy)
Claudia Notarnicola, Politecnico di Bari and INFM (Italy)
Francesco Posa, Politecnico di Bari and INFM (Italy)
Giuseppe Calbi, Ericsson Lab. (Italy)
Domenico Casarano, ENEA CR Trisaia (Italy)
Antonio Mongelli, Politecnico di Bari (Italy)
Vincenzo Sabatelli, ENEA CR Trisaia (Italy)

Published in SPIE Proceedings Vol. 4491:
Subsurface and Surface Sensing Technologies and Applications III
Cam Nguyen, Editor(s)

© SPIE. Terms of Use
Back to Top