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On the polarimetric variable improvement via alignment of subarray channels in PPAR using weather returns / Igor R. Ivić in IEEE Transactions on geoscience and remote sensing, Vol 59 n° 3 (March 2021)  

Public [article]  inIEEE Transactions on geoscience and remote sensing > Vol 59 n° 3 (March 2021) . - pp 2015 - 2027 Titre : On the polarimetric variable improvement via alignment of subarray channels in PPAR using weather returns Type de document : Article/Communication Auteurs : Igor R. Ivić, Auteur Année de publication : 2021 Article en page(s) : pp 2015 - 2027 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement du signal [Termes IGN] antenne radar [Termes IGN] coefficient de corrélation [Termes IGN] données météorologiques [Termes IGN] données polarimétriques [Termes IGN] écho radar [Termes IGN] faisceau [Termes IGN] mesurage de phase [Termes IGN] oscillateur [Termes IGN] polarimétrie radar [Termes IGN] variance de phase Résumé : (Auteur) Many modern phased-array radars (PARs) are multichannel systems that include multiple receivers for data acquisition. Each channel provides a signal from a group of Transmit/Receive modules comprising a section of the antenna. Channels typically consist of a full receive path, often with an independent local oscillator (LO) clock source. Such arrangement provides for beamforming flexibility on receive which can be applied in a digital domain. Consequently, the channel-to-channel phase and magnitude alignment is critical to maximizing the performance of the digital beamforming process and the accuracy of resulting detections and measurements. Herein, a novel method to improve such alignment using weather returns and achieve the improvement in the polarimetric variable estimates is described. Numéro de notice : A2021-213 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1109/TGRS.2020.3003293 Date de publication en ligne : 10/07/2020 En ligne : https://doi.org/10.1109/TGRS.2020.3003293 Format de la ressource électronique : URL Article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=97201 [article]

G-band radar for humidity and cloud remote sensing / Ken B. Cooper in IEEE Transactions on geoscience and remote sensing, vol 59 n° 2 (February 2021)  

Public [article]  inIEEE Transactions on geoscience and remote sensing > vol 59 n° 2 (February 2021) . - pp 1106 - 1117 Titre : G-band radar for humidity and cloud remote sensing Type de document : Article/Communication Auteurs : Ken B. Cooper, Auteur ; Richard J. Roy, Auteur ; Robert Dengler, Auteur ; et al., Auteur Année de publication : 2021 Article en page(s) : pp 1106 - 1117 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image radar et applications [Termes IGN] antenne radar [Termes IGN] bruit thermique [Termes IGN] humidité de l'air [Termes IGN] modèle atmosphérique [Termes IGN] nuage [Termes IGN] rapport signal sur bruit [Termes IGN] réflectivité [Termes IGN] télédétection en hyperfréquence Résumé : (auteur) VIPR (vapor in-cloud profiling radar) is a tunable G-band radar designed for humidity and cloud remote sensing. VIPR uses all-solid-state components and operates in a frequency-modulated continuous-wave (FMCW) radar mode, offering a transmit power of 200–300 mW. Its typical chirp bandwidth of 10 MHz over a center-frequency tuning span of 167–174.8 GHz results in a nominal range resolution of 15 m. The radar’s measured noise figure over the transmit band is between 7.4 and 10.4 dB, depending on its frequency and hardware configuration, and its calculated antenna gain is 58 dB. These parameters mean that with typical 1 ms chirp times, single-pulse cloud reflectivities as low as −26 dBZ are detectable with unity signal-to-noise at 5 km. Experimentally, radar returns from ice clouds above 10 km in height have been observed from the ground. VIPR’s absolute sensitivity was validated using a spherical metal target in the radar antenna’s far-field, and a G-band switch has been implemented in an RF calibration loop for periodic recalibration. The radar achieves high sensitivity with thermal noise limited detection both by virtue of its low-noise RF architecture and by using a quasioptical duplexing method that preserves ultrahigh transmit/receive isolation despite operation in an FMCW mode with a single primary antenna shared by the transmitter and receiver. Numéro de notice : A2021-112 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1109/TGRS.2020.2995325 Date de publication en ligne : 04/06/2020 En ligne : https://doi.org/10.1109/TGRS.2020.2995325 Format de la ressource électronique : url article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=96916 [article]

Improvement of stepped-frequency continuous wave Ground-Penetrating Radar cross-range resolution / I. Nicolaescu in IEEE Transactions on geoscience and remote sensing, vol 51 n° 1 Tome 1 (January 2013)  

Public [article]  inIEEE Transactions on geoscience and remote sensing > vol 51 n° 1 Tome 1 (January 2013) . - pp 85 - 92 Titre : Improvement of stepped-frequency continuous wave Ground-Penetrating Radar cross-range resolution Type de document : Article/Communication Auteurs : I. Nicolaescu, Auteur Année de publication : 2013 Article en page(s) : pp 85 - 92 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image radar et applications [Termes IGN] antenne radar [Termes IGN] fouillis d'échos [Termes IGN] onde entretenue à fréquence échelonnée [Termes IGN] polarisation [Termes IGN] polarisation croisée [Termes IGN] radar pénétrant GPR Résumé : (Auteur) This paper presents some experimental results obtained with newly developed stepped-frequency continuous wave (SFCW) ground-penetrating radar in a frequency range from 400 to 4845 MHz. This paper describes the procedures to remove the delays within the transmitter, the receiver, and the antenna system and analyzes the experimental results obtained after processing the measured data. The measured system footprint and the experimental results show that using an ultrawideband (UWB) Archimedean spiral antenna decreases the coupling signal but does not provide the needed cross-range resolution. Based on the measured dimensions of the footprint, a synthetic aperture procedure is used to improve the radar cross-range resolution from around 60 cm to about 6 cm. This paper shows the ability of the radar to detect dielectric objects and to exhibit their shape as it works with circularly polarized waves. What makes this paper different from prior work, which presents some experiments using a vector network analyzer set up to work as an SFCW radar, is that the data were acquired with a real system working with circular polarization and using two UWB Archimedean spirals. The calibration procedures as well as the synthetic aperture procedure were developed and validated based on measured data with the SFCW radar. Numéro de notice : A2013-011 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1109/TGRS.2012.2198069 Date de publication en ligne : 15/06/2012 En ligne : https://doi.org/ 10.1109/TGRS.2012.2198069 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=32149 [article]

Exemplaires(1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
065-2013011A	RAB	Revue	Centre de documentation	En réserve L003	Disponible

vol 48 n° 2 - February 2010 - TerraSAR-X: Mission, calibration and first results (Bulletin de IEEE Transactions on geoscience and remote sensing) / Geoscience and remote sensing society  

Public [n° ou bulletin]  est un bulletin de IEEE Transactions on geoscience and remote sensing / IEEE Geoscience and remote sensing society (Etats-Unis) (1986 -)   Titre : vol 48 n° 2 - February 2010 - TerraSAR-X: Mission, calibration and first results Type de document : Périodique Auteurs : Geoscience and remote sensing society, Auteur Année de publication : 2010 Importance : 250 p. Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Télédétection [Termes IGN] antenne radar [Termes IGN] étalonnage [Termes IGN] image TerraSAR-X [Termes IGN] mission spatiale [Termes IGN] processus [Termes IGN] radar à antenne synthétique [Termes IGN] TerraSAR-X Numéro de notice : 065-201002 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Numéro de périodique En ligne : http://ieeexplore.ieee.org/xpl/tocresult.jsp?isnumber=5393894&punumber=36 Format de la ressource électronique : URL sommaire Permalink : https://documentation.ensg.eu/index.php?lvl=bulletin_display&id=13563 [n° ou bulletin]

Contient

• The Terrasar-X satellite / W. Pitz in IEEE Transactions on geoscience and remote sensing, vol 48 n° 2 (February 2010)  
• The Terrasar-X ground segment / S. Buckreuss in IEEE Transactions on geoscience and remote sensing, vol 48 n° 2 (February 2010)  
• Terrasar-X instrument operations rooted in the system engineering and calibration projet / U. Steinbrecher in IEEE Transactions on geoscience and remote sensing, vol 48 n° 2 (February 2010)  
• Terrasar-X SAR processing and products / H. Breit in IEEE Transactions on geoscience and remote sensing, vol 48 n° 2 (February 2010)  
• Evaluation of Terrasar-X observations for wetland INSAR application / S.H. Hong in IEEE Transactions on geoscience and remote sensing, vol 48 n° 2 (February 2010)  
• Interferometric microrelief sensing with Terrasar-X: first results / J. Baade in IEEE Transactions on geoscience and remote sensing, vol 48 n° 2 (February 2010)  

Exemplaires(1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
065-2010021	RAB	Revue	Centre de documentation	En réserve L003	Disponible

Modern radar systems / H. Meikle (2008)

Public Titre : Modern radar systems Type de document : Monographie Auteurs : H. Meikle, Auteur Mention d'édition : 2 Editeur : Londres, Washington : Artech House Année de publication : 2008 Importance : 701 p. Format : 22 x 29 cm ISBN/ISSN/EAN : 978-1-59693-242-5 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Télédétection [Termes IGN] antenne radar [Termes IGN] détecteur [Termes IGN] écho radar [Termes IGN] émetteur [Termes IGN] filtrage du signal [Termes IGN] géopositionnement [Termes IGN] hyperfréquence [Termes IGN] performance [Termes IGN] polarisation [Termes IGN] radar [Termes IGN] récepteur radar [Termes IGN] seuillage d'image [Termes IGN] télédétection en hyperfréquence [Termes IGN] traitement du signal [Termes IGN] transformation de Fourier [Termes IGN] transformation mathématique Index. décimale : 35.22 Télédétection en hyperfréquence - Traitement d'image radar Résumé : (Editeur) This revised and updated edition offers professionals complete and current coverage of the subject, including new material on critical aspects such as accuracy, resolution, and convolution and correlation. The book features more than 540 illustrations that offer a greater understanding of various waveforms, and other two- and three-dimensional functions, to help engineers more accurately analyze radar system performance. The effects of pulse shaping on transmitter stability and spectra are discussed - a topic that is becoming more and more important to today's engineers. Radar practitioners get a number of critical atmospheric models to help them with their challenging work. Each chapter ends with a performance section, showing the effect of that particular aspect on the complete radar system budget for range, accuracy, and stability. Note de contenu : Chapitre 1 - The radar and its ground environment Chapitre 2 - Usual and Unusual Concepts Chapitre 3 - Transmitters Chapitre 4 - Microwave waveguide and transmission line system Chapitre 5 - Antennas Chapitre 6 - Factors outside the radar : propagation, scattering and clutter Chapitre 7 - Receivers Chapitre 8 - Matched and matching filters Chapitre 9 - Detectors Chapitre 10 - Analogue-to-digital conversion Chapitre 11 - Signal processing Chapitre 12 - Threshold and detection Chapitre 13 - Determination of position Chapitre 14 - Performance Chapitre 15 - Transforms Annexes Numéro de notice : 20108 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Monographie Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=62917

Ground penetrating radar, 2nd edition / D.J. Daniels (2004)

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Surface-penetrating radar / D.J. Daniels (1996)

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The effect of system parameters on the quality of polarized and depolarized bistatic radar cross section measurements / R.J. Nelson in Remote sensing of environment, vol 27 n° 2 (01/02/1989)  

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Determination of the vertical pattern of the SIR-B antenna / R.K. Moore in International Journal of Remote Sensing IJRS, vol 9 n° 5 (May 1988)  

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Azimuth depolarization ambiguities in synthetic aperture radar / D.H. Lukert in International Journal of Remote Sensing IJRS, vol 9 n° 3 (May 1988)  

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Radar altimetry response from rough surface / S.R.J. Axelsson in Photogrammetria, vol 42 n° 1-2 (November 1987)

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Microwave remote sensing active and passive, 3. Vol 3 From theory to application / F. Ulaby (1986)

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Physique et théorie du radar, 1. Tome 1 / J. Darricau (1973)

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Microwave radiometry and its potential application to Earth resources surveys : Report prepared for the European space research organisation under ESTEC contract 1411/71 EL, 1. Physical background and technological implementation / S. Axelsson (1971)

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Radar astronomy, 2. Tome 2 / J.V. Evans (ca : 1965)

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