Zobrazeno 1 - 10
of 2 112
pro vyhledávání: '"Backprojection"'
Publikováno v:
IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, Vol 17, Pp 15330-15343 (2024)
Circular synthetic aperture radar (CSAR) has advantages of the omnidirectional detection and high-resolution imaging. However, when CSAR detects the dense target in the observation scene, the phenomena such as the layover effect in the CSAR image may
Externí odkaz:
https://doaj.org/article/933e6743590e4591925ee7499f254eb0
Publikováno v:
IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, Vol 17, Pp 3742-3754 (2024)
Frequency stepping is a widely used technique for ultrahigh-resolution synthetic aperture radar (SAR). Although reducing the burden of hardware, this technique increases the complexity of imaging algorithms due to the intersubband time offsets and in
Externí odkaz:
https://doaj.org/article/e953fe383ea4472e8a97a29d10876915
Publikováno v:
IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, Vol 17, Pp 3345-3365 (2024)
This work investigates the impact of motion estimation errors on passive inverse synthetic aperture radar (ISAR) images of rotating targets when the backprojection algorithm (BPA) is employed to focus the data. Accurate target motion estimation can b
Externí odkaz:
https://doaj.org/article/0f3c791d6d2d4a29ac64b5864d5e3b24
Autor:
Hannes Vasyura-Bathke, Andreas Steinberg, Frank Krüger, Guangcai Feng, P. Martin Mai, Sigurjón Jónsson
Publikováno v:
Seismica, Vol 3, Iss 1 (2024)
The Gulf of Aqaba earthquake occurred on 22 November 1995 in the Northern Red Sea and is the largest instrumentally recorded earthquake in the region to date. The event was extensively studied during the initial years following its occurrence. Howeve
Externí odkaz:
https://doaj.org/article/e3a3d36bc16b43ccbc08258773d52470
Autor:
Sambit Tarai, Elin Lundström, Therese Sjöholm, Hanna Jönsson, Alexander Korenyushkin, Nouman Ahmad, Mette A. Pedersen, Daniel Molin, Gunilla Enblad, Robin Strand, Håkan Ahlström, Joel Kullberg
Publikováno v:
Heliyon, Vol 10, Iss 4, Pp e26414- (2024)
Early cancer detection, guided by whole-body imaging, is important for the overall survival and well-being of the patients. While various computer-assisted systems have been developed to expedite and enhance cancer diagnostics and longitudinal monito
Externí odkaz:
https://doaj.org/article/e4d702b724d347bfa66cdac98efb45bf
Autor:
Leonardo Di Schiavi Trotta, Dmitri Matenine, Yannick Lemaréchal, Margherita Martini, Karl Stierstorfer, Mathieu des Roches, Philippe Letellier, Pierre Francus, Philippe Després
Publikováno v:
Frontiers in Earth Science, Vol 11 (2023)
In this work, a framework was developed to access and process raw data from a commercial X-ray Computed Tomography (CT) scanner for research purposes. Our method requires vendor-provided binaries to convert the data to a readable format and also to r
Externí odkaz:
https://doaj.org/article/6c9a02fa4e12439f8fcad5d56c96541c
Autor:
Seungwon Choi, Byeongjoon Kim, Chulkyu Park, Jueon Park, Yousuk Kim, Sungil Choi, Jongduk Baek
Publikováno v:
IEEE Access, Vol 11, Pp 49261-49272 (2023)
Helical computed tomography (CT) scans are often performed to obtain three-dimensional images of an object that is longer than the detector. However, the existing quasi-exact and exact reconstruction methods, such as re-binning and Katsevich algorith
Externí odkaz:
https://doaj.org/article/4bd94d6e522e4dc098c694ee879bc3bc
Akademický článek
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Akademický článek
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Publikováno v:
Remote Sensing, Vol 15, Iss 23, p 5529 (2023)
High resolution remains a primary goal in the advancement of synthetic aperture radar (SAR) technology. The backprojection (BP) algorithm, which does not introduce any approximation throughout the imaging process, is broadly applicable and effectivel
Externí odkaz:
https://doaj.org/article/dff5aac9aaaf4636a6a0cfb6bade0d43