Zobrazeno 1 - 10
of 23
pro vyhledávání: '"Dunyong Zheng"'
Publikováno v:
Atmosphere, Vol 15, Iss 1, p 72 (2024)
Atmospheric drag stands out as the predominant non-gravitational force acting on satellites in Low Earth Orbit (LEO), with altitudes below 2000 km. This drag exhibits a strong dependence on the thermospheric mass density (TMD), a parameter of vital s
Externí odkaz:
https://doaj.org/article/b4b675604b6349f1ab0833540d3421c5
Publikováno v:
Remote Sensing, Vol 15, Iss 1, p 111 (2022)
During geomagnetic storms, ionospheric storms can be driven by several mechanisms. Observations performed using ground- and space-based instruments were used to reveal the driver of the positive ionospheric storm over the South American sector during
Externí odkaz:
https://doaj.org/article/e954f0d6d8384fe5be715f2e3f41444d
Autor:
Lvquan Wei, Junyu Li, Lilong Liu, Liangke Huang, Dunyong Zheng, Xiangyu Tian, Ling Huang, Lv Zhou, Chao Ren, Hongchang He
Publikováno v:
Remote Sensing, Vol 14, Iss 19, p 4759 (2022)
With the rapid development of global navigation satellite systems (GNSS) and their increasingly wide range of applications in atmospheric science, total electron content (TEC) data are widely used in the theoretical study of layer coupling related to
Externí odkaz:
https://doaj.org/article/6b65778a8e834011a1d80d90f0c232ae
Publikováno v:
Remote Sensing, Vol 11, Iss 13, p 1540 (2019)
Urban planning and management need accurate three-dimensional (3D) data such as light detection and ranging (LiDAR) point clouds. The mobile laser scanning (MLS) data, with up to millimeter-level accuracy and point density of a few thousand points/m2
Externí odkaz:
https://doaj.org/article/95432422bf364c77a245e805279c9992
Publikováno v:
Discrete Dynamics in Nature and Society, Vol 2015 (2015)
Fresh fruits and vegetables, perishable by nature, are subject to additional deterioration and bruising in the distribution process due to vibration and shock caused by road irregularities. A nonlinear mathematical model was developed that considered
Externí odkaz:
https://doaj.org/article/81810a9f05af451aa9255bf335394bd8
Publikováno v:
Remote Sensing, Vol 9, Iss 8, p 771 (2017)
Automatic extraction of power lines using airborne LiDAR (Light Detection and Ranging) data has been one of the most important topics for electric power management. However, this is very challenging over complex urban areas, where power lines are in
Externí odkaz:
https://doaj.org/article/374209f9b5b84223bbafbdd2b62ecbb7
Publikováno v:
IEEE Transactions on Geoscience and Remote Sensing. 59:7051-7061
Computerized ionospheric tomography is an important technique for ionosphere investigation. However, it is an ill-posed problem owing to an insufficient amount of available data, because of which the distributions of ionospheric electron density (IED
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::94e4f39b4bd7de4b42a8723df42d6f76
https://doi.org/10.1109/tgrs.2020.3029819
https://doi.org/10.1109/tgrs.2020.3029819
Publikováno v:
Journal of Geophysical Research: Space Physics. 127
Several X-class solar flares (SFs) with different intensities and locations on the solar disk occurred in September 2017. Among them, the X9.3 SF on 6 September 2017 was the most intensive SF in the 24th solar cycle. In this study, we investigated an
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7caa658ce55a50b00a87fe29669f4909
https://doi.org/10.1029/2021ja030245
https://doi.org/10.1029/2021ja030245
Autor:
Wenfeng Nie, Adrià Rovira‐Garcia, Mowen Li, Zhenlong Fang, Yong Wang, Dunyong Zheng, Tianhe Xu
Publikováno v:
UPCommons. Portal del coneixement obert de la UPC
Universitat Politècnica de Catalunya (UPC)
Universitat Politècnica de Catalunya (UPC)
In this study, we focus on the kinematic precise point positioning (PPP) solutions at high-latitudes during the March 2015 great geomagnetic storm. We aim to discover the mechanism behind the positioning degradation from the perspective of the impact
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::400f6f91e03b453069a4253313b85bcf
https://doi.org/10.1029/2022sw003132
https://doi.org/10.1029/2022sw003132
Publikováno v:
UPCommons. Portal del coneixement obert de la UPC
Universitat Politècnica de Catalunya (UPC)
Universitat Politècnica de Catalunya (UPC)
We focus on the impacts of the polar cap ionospheric sporadic-E (Es) layer that occurred at Resolute Bay, Canada, on September 5, 2012, on the quality of the Global Positioning System (GPS) observable and the positioning performance. Mainly, we are c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3cd75de3b31224867eed4486e6aa5032
https://hdl.handle.net/2117/365214
https://hdl.handle.net/2117/365214
