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Proceedings Paper

Combining bistatic and monostatic radar measurements for retrieving soil moisture
Author(s): Nazzareno Pierdicca; Ludovico De Titta; Luca Pulvirenti; Francesca Ticconi; Marco Brogioni
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Paper Abstract

The problem of soil moisture retrieval by means of a bistatic radar system, for the purpose of investigating a candidate bistatic mission, is addressed in this paper. The optimal geometric configuration of measurement in terms of incidence and observation (scattering) directions is identified. Such a configuration should ensure good sensitivity to soil moisture and good spatial coverage. We use a theoretical scattering model to simulate the bistatic scattering coefficient of bare soil for analyzing the sensitivity to soil moisture. The error variance of a linear regression estimator is employed for this purpose. This index is computed as function of elevation and azimuth scattering angles. Results shows that the best performances in terms of soil moisture retrieval can be achieved by complementing the bistatic measurements with the monostatic ones, which are supposed to be available through already operating spaceborne radars. The problem of the feasibility of the bistatic configuration identified through the sensitivity study is also addressed focusing on the duty cycle and the spatial coverage.

Paper Details

Date Published: 29 September 2009
PDF: 9 pages
Proc. SPIE 7477, Image and Signal Processing for Remote Sensing XV, 74771R (29 September 2009); doi: 10.1117/12.830439
Show Author Affiliations
Nazzareno Pierdicca, Univ. degli Studi di Roma La Sapienza (Italy)
Ludovico De Titta, Univ. degli Studi di Roma La Sapienza (Italy)
Luca Pulvirenti, Univ. degli Studi di Roma La Sapienza (Italy)
Francesca Ticconi, Univ. degli Studi di Roma La Sapienza (Italy)
Marco Brogioni, Istituto di Fisica Applicata Nello Carrara, CNR (Italy)

Published in SPIE Proceedings Vol. 7477:
Image and Signal Processing for Remote Sensing XV
Lorenzo Bruzzone; Claudia Notarnicola; Francesco Posa, Editor(s)

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