Zobrazeno 1 - 10
of 397
pro vyhledávání: '"cao zeng"'
Publikováno v:
The Clinical Respiratory Journal, Vol 18, Iss 10, Pp n/a-n/a (2024)
ABSTRACT Introduction Various bronchoscopic guidance techniques have emerged to improve the diagnostic yield of peripheral pulmonary lesions (PPLs), especially when combined with ultra‐thin bronchoscopy. However, uncertainties exists in the conveni
Externí odkaz:
https://doaj.org/article/db28fe58c8dc4b27be9f674b1b305dd3
Publikováno v:
IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, Vol 17, Pp 18517-18534 (2024)
Video synthetic aperture radar (video SAR) has been successfully applied in many fields and the registration of the video SAR images has been proven to be a crucial step in their preprocessing. However, video SAR images exhibit more severe image diff
Externí odkaz:
https://doaj.org/article/00007bba96dd49d48ca4fcfde991f6dd
Autor:
Jing Liu, Pengcheng Huang, Cao Zeng, Guisheng Liao, Jingwei Xu, Haihong Tao, Filbert H. Juwono
Publikováno v:
Remote Sensing, Vol 16, Iss 10, p 1737 (2024)
For airborne radar, detecting a low–slow–small (LSS) target is a hot and challenging topic, which results from the rapidly increasing number of non-cooperative flying LSS targets becoming of widespread concern, and the low signal-to-clutter ratio
Externí odkaz:
https://doaj.org/article/bc5a3913ac1e41b09fb6fb5dfac7aeb6
Publikováno v:
IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, Vol 16, Pp 3988-3999 (2023)
In the process of radio frequency interference (RFI) suppression for synthetic aperture radar (SAR), when frequencies of RFIs are not located on discrete grids of the frequency spectrum, i.e., RFIs are off-grid, energies of RFIs will spread out, degr
Externí odkaz:
https://doaj.org/article/dd368e2030d245d0ad9999e1f9f8efbe
Publikováno v:
IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, Vol 16, Pp 787-798 (2023)
The radio frequency interference (RFI) and deceptive jamming (DJ), as two major external threats to synthetic aperture radar (SAR) systems, can greatly reduce the readability and veracity of the obtained SAR images. Current interference suppression m
Externí odkaz:
https://doaj.org/article/96fd31e848c445408d797684a709dd97
Publikováno v:
Leida xuebao, Vol 11, Iss 5, Pp 850-870 (2022)
A Frequency Diverse Array (FDA), developed innovatively based on phased array radar, can obtain an angle-range-time-dependent multidimensional transmit beampattern by modulating frequencies across different transmit antenna elements, which considerab
Externí odkaz:
https://doaj.org/article/b4a317b98a8446989b1d91911a6ba822
Publikováno v:
Remote Sensing, Vol 16, Iss 6, p 1093 (2024)
Non-side-looking airborne radar provides important applications on account of its all-round multi-angle airspace coverage. However, it suffers clutter range dependence that makes the samples fail to satisfy the condition of being independent and iden
Externí odkaz:
https://doaj.org/article/08024ed0c73d4b5eb06561c0d3ebbb99
Publikováno v:
IET Radar, Sonar & Navigation, Vol 15, Iss 7, Pp 788-795 (2021)
Abstract DOA estimation based on sparse representation in a non‐uniform noise environment is proposed using a tail minimisation technique. The noise‐free covariance matrix is modelled as diagonal and off‐diagonal components relating to incoming
Externí odkaz:
https://doaj.org/article/9e214742270e46509f1113159603b2db
Publikováno v:
Remote Sensing, Vol 15, Iss 8, p 2077 (2023)
Aimingat non-side-looking airborne radar, we propose a novel unsupervised affinity propagation (AP) clustering radar detection algorithm to suppress clutter and detect targets. The proposed method first uses selected power points as well as space-tim
Externí odkaz:
https://doaj.org/article/8a9bf2576550416f9a67bcbadc78fdad
Publikováno v:
International Journal of Distributed Sensor Networks, Vol 18 (2022)
Load balancing is of great significance to extend the longevity of wireless sensor networks, due to the inherent imbalanced energy overhead in such networks. However, existing solutions cannot balance the load distribution in partially disconnected w
Externí odkaz:
https://doaj.org/article/b6af8334a4d9461ea19fa172fcf11ad1