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Radiometric resolution optimization for future SAR systems
IEEE International IEEE International IEEE International Geoscience and Remote Sensing Symposium, 2004. IGARSS '04. Proceedings. 2004, 2004This paper presents a radiometric resolution optimization strategy which can be used in new generation of Synthetic Aperture Radar (SAR) systems. An expression, which allows optimization depending on application, has been developed for this purpose.
Márquez-Martínez, J. +2 more
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SAR processing without a motion measurement system
2017 European Radar Conference (EURAD), 2017This paper leads a discussion on how to form a SAR image without knowing the track. That is within the scope of Factorized Geometrical Autofocus (FGA). The FGA algorithm is a base-2 fast factorized back-projection formulation with six free geometry parameters (per sub-aperture pair). These are tuned step-by-step until a sharp image is obtained.
Jan Torgrimsson +3 more
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Reconstruction of missing data in interferometric SAR systems
2013 IEEE International Geoscience and Remote Sensing Symposium - IGARSS, 2013Missing echoes in the raw data introduce artifacts that might be noticeable in processed SAR images. As a consequence, recovery methods must be applied to ensure the high quality of the images. Although spectral estimation based interpolators are suitable for the recovery of point-like targets, their efficiency is poor for distributed ones.
Muriel Pinheiro +5 more
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IGARSS 2001. Scanning the Present and Resolving the Future. Proceedings. IEEE 2001 International Geoscience and Remote Sensing Symposium (Cat. No.01CH37217), 2002
In response to the significant task of mapping and monitoring the Amazon region, the System for Vigilance of the Amazon (SIVAM) program was initiated by the Brazilian government. One of the key elements of SIVAM is a group of three remote sensing aircraft, each equipped with a multi-mode synthetic aperture radar as the prime sensor.
M.M. Goulding, D.R. Stevens, P.R. Lim
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In response to the significant task of mapping and monitoring the Amazon region, the System for Vigilance of the Amazon (SIVAM) program was initiated by the Brazilian government. One of the key elements of SIVAM is a group of three remote sensing aircraft, each equipped with a multi-mode synthetic aperture radar as the prime sensor.
M.M. Goulding, D.R. Stevens, P.R. Lim
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2008 38th European Microwave Conference, 2008
This paper describes a method where a SAR system can be used with a single antenna both for transmitting and receiving. The system is using an antenna switch combined with a delayed version of the transmitted signal applied to the local oscillator of the detector.
Svein-Erik Hamran +3 more
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This paper describes a method where a SAR system can be used with a single antenna both for transmitting and receiving. The system is using an antenna switch combined with a delayed version of the transmitted signal applied to the local oscillator of the detector.
Svein-Erik Hamran +3 more
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A multibeam opportunistic SAR system
2011 IEEE RadarCon (RADAR), 2011This paper discusses the implementation of a passive radar system designed to perform imaging of the ground using radar satellites as emitters of opportunity. The receiver consists in a 4-element microstrip antenna array and is able to receive the signals from most C-band Synthetic Aperture Radar satellites.
Edison Cristofani +2 more
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Perspectives and visions for future SAR systems
IEE Proceedings - Radar, Sonar and Navigation, 2003It is shown how far new SAR techniques, technologies and system principles, which at present are under consideration or under development, respectively, will fulfil future user requirements. Starting from the status quo, the expected development of future SAR techniques and technology is presented, leading to the vision of an autonomous, global ...
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The EARSEC SAR processing system
Proceedings of IGARSS '94 - 1994 IEEE International Geoscience and Remote Sensing Symposium, 2005The SAR processor is the basic element of the EARSEC processing chain. It will ingest raw data acquired by the EARSEC SAR sensors and will generate fully processed, calibrated, geocoded and georeferenced data. In addition the processor can generate, on request by the operator, intermediate products at any level of processing to allow the validation of ...
A.J. Sieber, C. Lavalle, D.R. Slogget
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Maritime Application System for SAR Satellite
IGARSS 2023 - 2023 IEEE International Geoscience and Remote Sensing Symposium, 2023Yeonju Choi, Sanghyuck Han, Sungu Lee
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Systemic Acquired Resistance (SAR)
1998Nicotiana species and cultivars possessing the dominant N gene, e.g. Nicotiana glutinosa, N. tabacum “Samsun NN” and N. tabacum “Xanthi nc”, produce necrotic local lesions upon inoculation with the type strain of tobacco mosaic Tobamovirus (TMV).
Jeanne Dijkstra, Cees P. de Jager
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