Exploitation of C and X band SAR images for soil moisture change detection estimation in agricultural areas (Po valley-Italy)

被引：1

作者：

Notarnicola, C. ^{[1
]}

Ventura, B. ^{[1
]}

Pasolli, L. ^{[1
,2
]}

Di Giuseppe, F. ^{[3
]}

Petitta, M. ^{[1
]}

Bonafe, G. ^{[3
]}

Caporaso, L. ^{[3
,4
]}

Spisni, A. ^{[3
]}

Bittelli, M. ^{[4
]}

机构：

[1] EURAC Inst Appl Remote Sensing, Viale Druso 1, Bolzano, Italy

[2] Univ Trento, Dept Informat Engn & Comp Sci, I-38123 Trento, Italy

[3] ARPA Serv Idro Meteo Clima, Bologna, Italy

[4] Univ Bologna, Bologna, Italy

来源：

SAR IMAGE ANALYSIS, MODELING, AND TECHNIQUES X | 2010年 / 7829卷

关键词：

Soil moisture; SAR images; vegetation effect; inversion algorithm; SENSITIVITY;

D O I：

10.1117/12.870495

中图分类号：

TP7 [遥感技术];

学科分类号：

081102 ; 0816 ; 081602 ; 083002 ; 1404 ;

摘要：

This paper presents the analysis of C and X band images in the scope of soil moisture detection in agricultural fields. Archived data have been analyzed in order to understand the SAR signal behavior of vegetated fields in comparison to bare soils. The results indicate that the sensitivity to bare fields of C and X band signatures is very close, while it changes in presence of vegetation. In particular the effect is directly proportional to amount of vegetation that in this preliminary analysis has been evaluated through the NDVI variable. After this analysis, a statistical approach has been applied to SAR images to infer the information on the soil moisture values. Several experiments have been carried out by considering only C band data, only X band data and a combination of C and X band data. For bare soils, C and X band data determine very similar results and in good agreement to ground measurements. For vegetated fields, C band data tend to underestimate soil moisture due to the vegetation attenuation, while X band data, mainly influenced by vegetation, determine very poor results. Encouraging results are obtained by the combination of C and X band data, thus indicating that X band data can be used in combination to C band data in order to compensate the effect of vegetation.

引用

页数：9

共 18 条

[1] Analysis of TerraSAR-X data and their sensitivity to soil surface parameters over bare agricultural fields [J].

Baghdadi, Nicolas ;

Zribi, Mehrez ;

Loumagne, Cecile ;

Ansart, Patrick ;

Anguela, Thais Paris .

REMOTE SENSING OF ENVIRONMENT, 2008, 112 (12) :4370-4379

[2]

Beljaars ACM, 1996, MON WEATHER REV, V124, P362, DOI 10.1175/1520-0493(1996)124<0362:TAROTU>2.0.CO

[3]

[4]

BUDYKO M.I., 1974, Climate and Life, P508

[5] The European summer of 2003: Sensitivity to soil water initial conditions [J].

Ferranti, Laura ;

Viterbo, Pedro .

JOURNAL OF CLIMATE, 2006, 19 (15) :3659-3680

[6]

Fung A. K., 1994, Microwave scattering and emission models and their applications

[7] MICROWAVE DIELECTRIC BEHAVIOR OF WET SOIL .1. EMPIRICAL-MODELS AND EXPERIMENTAL-OBSERVATIONS [J].

HALLIKAINEN, MT ;

ULABY, FT ;

DOBSON, MC ;

ELRAYES, MA ;

WU, LK .

IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING, 1985, 23 (01) :25-34

[8] Multitemporal C-band radar measurements on wheat fields [J].

Mattia, F ;

Le Toan, T ;

Picard, G ;

Posa, FI ;

D'Alessio, A ;

Notarnicola, C ;

Gatti, AM ;

Rinaldi, M ;

Satalino, G ;

Pasquariello, G .

IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING, 2003, 41 (07) :1551-1560

[9]

Notarnicola C, 2006, IEEE T GEOSCIENCE RE, V44

[10] Inferring vegetation water content from C- and L-band SAR images [J].

Notarnicola, Claudia ;

Posa, Francesco .

IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING, 2007, 45 (10) :3165-3171

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