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Título

High Angular Resolution RFI Localization in Synthetic Aperture Interferometric Radiometers Using Direction-of-Arrival Estimation

AutorPark, H.; González, Verónica ; Camps, Adriano
Fecha de publicaciónene-2015
EditorInstitute of Electrical and Electronics Engineers
CitaciónIEEE Geoscience and Remote Sensing Letters 12(1): 102-106 (2015)
ResumenRadio-frequency interference (RFI) seriously affects the retrieval of geophysical parameters from the measurements of microwave radiometers. An accurate geolocation of the RFI is crucial to effectively switch off illegal transmitters. In this letter, a new RFI localization method is proposed to improve the achievable angular resolution by using beamforming and direction-of-arrival (DOA) estimation techniques. The proposed RFI localization techniques can be employed in synthetic aperture interferometric radiometers, such as the European Space Agency (ESA) Soil Moisture and Ocean Salinity (SMOS) mission. Two DOA estimation techniques are tested for the RFI localization: Capon and MUSIC. The feasibility of these methods is demonstrated with SMOS data. In the test results, the MUSIC beamforming shows a better performance of RFI localization than the SMOS Fourier imaging and the Capon, in terms of accuracy and resolution. © 2014 IEEE
Descripción5 pages
Versión del editorhttp://dx.doi.org/10.1109/LGRS.2014.2327006
URIhttp://hdl.handle.net/10261/110014
DOI10.1109/LGRS.2014.2327006
Identificadoresdoi: 10.1109/LGRS.2014.2327006
issn: 1545-598X
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