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Observatoire Midi-Pyrénées |  |
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Observatoire Midi-Pyrénées | |
| HAL: hal-00592547, version 1 |
| DOI: 10.3390/s110303037 |
| Detailed view |  Export this paper |
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| Sensors 11, 3 (2011) 3037-3050 |
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| Analysis of RFI Identification and Mitigation in CAROLS Radiometer Data Using a Hardware Spectrum Analyser |
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| Pascal Fanise 1, 2Mickaël Pardé 1, 2 |
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| (2011) |
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| A method to identify and mitigate radio frequency interference (RFI) in microwave radiometry based on the use of a spectrum analyzer has been developed. This method has been tested with CAROLS L-band airborne radiometer data that are strongly corrupted by RFI. RFI is a major limiting factor in passive microwave remote sensing interpretation. Although the 1.400-1.427 GHz bandwidth is protected, RFI sources close to these frequencies are still capable of corrupting radiometric measurements. In order to reduce the detrimental effects of RFI on brightness temperature measurements, a new spectrum analyzer has been added to the CAROLS radiometer system. A post processing algorithm is proposed, based on selective filters within the useful bandwidth divided into sub-bands. Two discriminant analyses based on the computation of kurtosis and Euclidian distances have been compared evaluated and validated in order to accurately separate the RF interference from natural signals. |
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| 1: | Laboratoire Atmosphères, Milieux, Observations Spatiales (LATMOS) |
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CNRS : UMR8190 – Université Pierre et Marie Curie [UPMC] - Paris VI – Université de Versailles Saint-Quentin-en-Yvelines – INSU |
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| 2: | Institut Pierre-Simon-Laplace (IPSL) |
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CNRS : FR636 – Institut de recherche pour le développement [IRD] – CEA – CNES – INSU – Université Pierre et Marie Curie [UPMC] - Paris VI – Université de Versailles Saint-Quentin-en-Yvelines – Ecole normale supérieure de Paris - ENS Paris |
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| 3: | Centre d'études spatiales de la biosphère (CESBIO) |
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CNRS : UMR5126 – Institut de recherche pour le développement [IRD] – CNES – Observatoire Midi-Pyrénées – INSU – Université Paul Sabatier [UPS] - Toulouse III |
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| Subject | : | Sciences of the Universe/Ocean, Atmosphere Engineering Sciences/Signal and Image processing Computer Science/Signal and Image Processing |
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| RFI – CAROLS – L-band – Radiometry |
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| hal-00592547, version 1 | |
| http://hal.archives-ouvertes.fr/hal-00592547 | |
| oai:hal.archives-ouvertes.fr:hal-00592547 | |
| From: Catherine Cardon | |
| Submitted on: Thursday, 12 May 2011 21:40:46 | |
| Updated on: Thursday, 12 May 2011 21:40:46 | |
