Analysis of RFI Identification and Mitigation in CAROLS Radiometer Data Using a Hardware Spectrum Analyser

Pascal Fanise; Mickaël Pardé; Mehrez Zribi; Monique Dechambre; Christophe Caudoux

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DOI: 10.3390/s110303037

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Analysis of RFI Identification and Mitigation in CAROLS Radiometer Data Using a Hardware Spectrum Analyser
Fanise P., Pardé M., Zribi M., Dechambre M., Caudoux C.
Sensors 11, 3 (2011) 3037-3050 - http://hal.archives-ouvertes.fr/hal-00592547

Publication type:

Article in peer-reviewed journal

Subject:

Sciences of the Universe/Ocean, Atmosphere

Engineering Sciences/Signal and Image processing

Computer Science/Signal and Image Processing

Title:

Analysis of RFI Identification and Mitigation in CAROLS Radiometer Data Using a Hardware Spectrum Analyser

Author(s):

Pascal Fanise ^1, 2, Mickaël Pardé ^1, 2, Mehrez Zribi ³, Monique Dechambre ^1, 2, Christophe Caudoux ^1, 2

Laboratory:

1:	Laboratoire Atmosphères, Milieux, Observations Spatiales (LATMOS)

	http://www.latmos.ipsl.fr

	CNRS : UMR8190 – Université Pierre et Marie Curie [UPMC] - Paris VI – Université de Versailles Saint-Quentin-en-Yvelines – INSU

	France

2:	Institut Pierre-Simon-Laplace (IPSL)

	http://www.ipsl.jussieu.fr/

	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

	4 Place Jussieu 75252 PARIS CEDEX 05

	France

3:	Centre d'études spatiales de la biosphère (CESBIO)

	http://www.cesbio.ups-tlse.fr

	CNRS : UMR5126 – Institut de recherche pour le développement [IRD] – CNES – Observatoire Midi-Pyrénées – INSU – Université Paul Sabatier [UPS] - Toulouse III

	bpi 2801 18 Av Edouard Belin 31401 TOULOUSE CEDEX 4

	France

Abstract:

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.

Fulltext language:

English

Journal:

Sensors
Publisher	MDPI
ISSN	1424-8220

Audience:

international

Publication date:

2011

Volume:

Issue:

Page, identifiant, ...:

3037-3050

Keyword(s):

RFI – CAROLS – L-band – Radiometry


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