Next Article in Journal
Lempel–Ziv Data Compression on Parallel and Distributed Systems
Previous Article in Journal
Requirements for Semantic Educational Recommender Systems in Formal E-Learning Scenarios
Open AccessArticle

Radio-Frequency Interference Detection and Mitigation Algorithms for Synthetic Aperture Radiometers

1
Remote Sensing Lab, Department of Signal Theory and Communications, Universitat Politècnica de Catalunya, E-08034 Barcelona, Spain
2
Institut d’Estudis Espacials de Catalunya, IEEC CRAE/UPC, E-08034 Barcelona, Spain
3
SMOS Barcelona Expert Center, Institut de Ciencies del Mar, CMIMA–CSIC, Department of Physical Oceanography, Passeig Maritim, 37-49, E-08003 Barcelona, Spain
4
DEIMOS ENGENHARIA, Av. D. Joao II, Lote 1.17, Torre Zen, 10°, 1998-023 Lisboa, Portugal
*
Author to whom correspondence should be addressed.
Algorithms 2011, 4(3), 155-182; https://doi.org/10.3390/a4030155
Received: 20 April 2011 / Revised: 15 July 2011 / Accepted: 11 August 2011 / Published: 30 August 2011
The European Space Agency (ESA) successfully launched the Soil Moisture and Ocean Salinity (SMOS) mission in November 2, 2009. SMOS uses a new type of instrument, a synthetic aperture radiometer named MIRAS that provides full-polarimetric multi-angular L-band brightness temperatures, from which regular and global maps of Sea Surface Salinity (SSS) and Soil Moisture (SM) are generated. Although SMOS operates in a restricted band (1400–1427 MHz), radio-frequency interference (RFI) appears in SMOS imagery in many areas of the world, and it is an important issue to be addressed for quality SSS and SM retrievals. The impact on SMOS imagery of a sinusoidal RFI source is reviewed, and the problem is illustrated with actual RFI encountered by SMOS. Two RFI detection and mitigation algorithms are developed (dual-polarization and full-polarimetric modes), the performance of the second one has been quantitatively evaluated in terms of probability of detection and false alarm (using a synthetic test scene), and results presented using real dual-polarization and full-polarimetric SMOS imagery. Finally, a statistical analysis of more than 13,000 L1b snap-shots is presented and discussed. View Full-Text
Keywords: synthetic aperture radiometer; radio-frequency interference; L-band; detection; mitigation; algorithm synthetic aperture radiometer; radio-frequency interference; L-band; detection; mitigation; algorithm
Show Figures

Graphical abstract

MDPI and ACS Style

Camps, A.; Gourrion, J.; Tarongi, J.M.; Vall Llossera, M.; Gutierrez, A.; Barbosa, J.; Castro, R. Radio-Frequency Interference Detection and Mitigation Algorithms for Synthetic Aperture Radiometers. Algorithms 2011, 4, 155-182.

Show more citation formats Show less citations formats

Article Access Map by Country/Region

1
Only visits after 24 November 2015 are recorded.
Back to TopTop