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Proceedings Paper

Temporal multiparameter airborne DLR E-SAR images for crop monitoring: summary of the CLEOPATRA campaign 1992
Author(s): Christiane C. Schmullius; Juergen Nithack
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Paper Abstract

From May 11 to July 31, 1992 the Cloud Experiment OberPfaffenhofen And Transports took place as a field experimental contribution to the global energy and water cycle experiment. The DLR Institute of Radio Frequency Technology participated with its experimental SAR system E- SAR. Multitemporal X-, C- and L-band data from 8 dates and three ERS-1 images between May 20 and July 30, 1992 are analyzed in regard to the influence of changing plant backscatter constituents and to investigate the impact of increasing ground cover in the different wavelength on soil moisture mapping. Backscatter curves of four crops are shown, which indicate the possibility for crop monitoring and preferred times for crop classification. Detection of soil moisture changes is only possible with L-band and only under grain crops. Maximum likelihood and isocluster classifications were applied on several single- and multifrequency, mono- and multitemporal channel combinations. The overall classification accuracies were higher than with supervised methods. Maximum likelihood classification allowed identification of ten crop types with accuracies of up to 84 percent, when a temporal multifrequency data set was used.

Paper Details

Date Published: 17 January 1997
PDF: 12 pages
Proc. SPIE 2959, Remote Sensing of Vegetation and Sea, (17 January 1997); doi: 10.1117/12.264275
Show Author Affiliations
Christiane C. Schmullius, DLR (Germany)
Juergen Nithack, DLR (Germany)

Published in SPIE Proceedings Vol. 2959:
Remote Sensing of Vegetation and Sea
Giovanna Cecchi; Guido D'Urso; Edwin T. Engman; Preben Gudmandsen, Editor(s)

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