Zobrazeno 1 - 10
of 14
pro vyhledávání: '"Felipe Queiroz de Almeida"'
Autor:
Felipe Queiroz de Almeida
Publikováno v:
Biblioteca Digital de Teses e Dissertações do ITAInstituto Tecnológico de AeronáuticaITA.
Due to the widespread acceptance of Synthetic Aperture Radar (SAR) imagery by the scientific community in recent years, SAR system design faces ever increasing demands for wide coverage of high resolution images. This represents a challenging task, s
Autor:
Alberto Moreira, Gerhard Krieger, Sigurd Huber, Marwan Younis, Felipe Queiroz de Almeida, Michelangelo Villano
Deployable reflector antennas illuminated by a digital feed array enable spaceborne synthetic aperture radar (SAR) systems capable to image an ultra-wide continuous swath at fine azimuth resolution. This is facilitated by the use of dedicated operati
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6d0b7e8fdf4e302ec2bd68e92a19f049
https://elib.dlr.de/134094/
https://elib.dlr.de/134094/
Autor:
Alberto Moreira, Pau Prats-Iraola, Marwan Younis, Marc Rodriguez-Cassola, Gerhard Krieger, Felipe Queiroz de Almeida
In the context of spaceborne synthetic aperture radar (SAR) imaging, high resolution and wide swath are inherently conflicting requirements. These may, however, be simultaneously satisfied by advanced imaging modes with multichannel architectures in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3e772c72425ac8df89e26c228cf92061
https://doi.org/10.1109/tgrs.2020.3023472
https://doi.org/10.1109/tgrs.2020.3023472
Publikováno v:
2020 IEEE Radar Conference (RadarConf20).
Scan-On-Receive (SCORE) is a promising digital beamforming technique to improve the performance of SAR systems and enable high-resolution wide-swath concepts with multiple elevation beams. The technique is based on a beam-steering law which follows t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5cc1ae5f43b8ce4cbe5ced20d782a564
https://doi.org/10.1109/radarconf2043947.2020.9266316
https://doi.org/10.1109/radarconf2043947.2020.9266316
Autor:
Andre Barros Cardoso da Silva, Felipe Queiroz de Almeida, Stefan V. Baumgartner, Gerhard Krieger
Multichannel calibration is essential for detecting moving targets and for estimating their positions and velocities accurately. This article presents a fast and efficient calibration algorithm for the along-track multichannel systems, in particular
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b6722c628fa0e8bf3a0ebd78da30aa62
https://elib.dlr.de/135728/
https://elib.dlr.de/135728/
Autor:
Michelangelo Villano, Gerhard Krieger, Alberto Moreira, Felipe Queiroz de Almeida, Marwan Younis, Sigurd Huber
Publikováno v:
IEEE Transactions on Geoscience and Remote Sensing. 56:4792-4807
Tandem-L is proposed as a spaceborne synthetic aperture radar (SAR) mission developed and operated by the German Aerospace Center in cooperation with several Helmholtz research centers and the German space industries. The mission concept comprises tw
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8e2c02a599ee0ef69952233186fec7e8
https://doi.org/10.1109/tgrs.2018.2837673
https://doi.org/10.1109/tgrs.2018.2837673
Autor:
Sigurd Huber, Felipe Queiroz de Almeida, Mariantonietta Zonno, Gerhard Krieger, Scott Hensley, Marc Rodriguez-Cassola, Marwan Younis
Publikováno v:
IGARSS
Utilizing digital multi-channel technology, spaceborne synthetic aperture radar instruments are capable of imaging swath widths of hundreds of kilometers at fine azimuth resolution. The main benefit follows through the extension of the trade space an
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a0720a17232b7f5d40ba449f5a1473ce
https://doi.org/10.1109/igarss.2019.8900078
https://doi.org/10.1109/igarss.2019.8900078
In the context of radar spaceborne imaging, the novel multichannel staggered synthetic aperture radar (SAR) mode represents a promising solution for the mapping of ultrawide swaths with very high azimuth resolution. This paper extends the analysis of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9ecda4fb2f7d0b73774e4c08b883ff46
https://elib.dlr.de/131852/
https://elib.dlr.de/131852/
State-of-the-art and future spaceborne SAR systems increasingly often face the requirement of providing high-resolution images with reduced revisit times, requiring coverage of wide swaths. Since these are contradicting drivers in terms of system des
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d5d4d8e76eb20257a9d0bd158caf4f53
https://elib.dlr.de/116585/
https://elib.dlr.de/116585/