Zobrazeno 1 - 10
of 168
pro vyhledávání: '"Zishen Li"'
Publikováno v:
Journal of Geodesy and Geoinformation Science, Vol 6, Iss 3, Pp 115-123 (2023)
The ionosphere is the ionized part of the upper atmosphere of the Earth, which plays an important role in atmospheric electricity and forms the inner edge of the magnetosphere. It influences radio propagation significantly, such as the Global Navigat
Externí odkaz:
https://doaj.org/article/b377a97fc1874e3bbbe9601989f29fb8
Publikováno v:
Metals, Vol 14, Iss 5, p 488 (2024)
This study created ceramic preforms with a 3D network structure (TAD3D) by using treated aluminum dross (TAD) and kaolin slurry, with 30 ppi polyurethane foam as a template via the sacrificial template method. TAD3D/5A05Al composites were then produc
Externí odkaz:
https://doaj.org/article/c6495d2fa6134c838d3bbb13271fba3b
Publikováno v:
Materials, Vol 17, Iss 6, p 1280 (2024)
This study utilizes desalted and denitrated treated aluminum dross (TAD) as a raw material, along with kaolin and 10 ppi (pores per inch) polyurethane foam as a template. The slurry is converted into an aluminum dross green body with a three-dimensio
Externí odkaz:
https://doaj.org/article/cb39296a63b94cdcb7a818ca07b673c3
Publikováno v:
Satellite Navigation, Vol 3, Iss 1, Pp 1-22 (2022)
Abstract The availability of raw Global Navigation Satellite System (GNSS) measurements from Android smart devices gives new possibilities for precise positioning solutions, e.g., Precise Point Positioning (PPP). However, the accuracy of the PPP with
Externí odkaz:
https://doaj.org/article/a0841832d28a48179bb1c0db0650e39e
Autor:
Zishen Li, Ningbo Wang, Ang Liu, Yunbin Yuan, Liang Wang, Manuel Hernández-Pajares, Andrzej Krankowski, Hong Yuan
Publikováno v:
Satellite Navigation, Vol 2, Iss 1, Pp 1-15 (2021)
Abstract As a new Ionosphere Associate Analysis Center (IAAC) of the International GNSS Service (IGS), Chinese Academy of Sciences (CAS) started the routine computation of the real-time, rapid, and final Global Ionospheric Maps (GIMs) in 2015. The me
Externí odkaz:
https://doaj.org/article/89ce1cc6a35b479b9b54c32b1c85cac1
Autor:
Yuyan Jin, Biqiang Zhao, Honglian Hao, Xinan Yue, Feng Ding, Baiqi Ning, Lingqi Zeng, Zishen Li
Publikováno v:
Remote Sensing, Vol 15, Iss 11, p 2842 (2023)
As the first advanced modular phase array incoherent scatter radar (ISR) established in the Eastern Hemisphere at low latitudes, Sanya ISR (SYISR) can measure the line-of-sight (LOS) velocity of ion drift in multiple directions, potentially yielding
Externí odkaz:
https://doaj.org/article/b1b8568686c7426fb8073fc28f870cf8
Autor:
Yury V. Yasyukevich, Dmitry Zatolokin, Artem Padokhin, Ningbo Wang, Bruno Nava, Zishen Li, Yunbin Yuan, Anna Yasyukevich, Chuanfu Chen, Artem Vesnin
Publikováno v:
Sensors, Vol 23, Iss 10, p 4773 (2023)
Global navigation satellite systems (GNSS) provide a great data source about the ionosphere state. These data can be used for testing ionosphere models. We studied the performance of nine ionospheric models (Klobuchar, NeQuickG, BDGIM, GLONASS, IRI-2
Externí odkaz:
https://doaj.org/article/9081846fde594e56bd6801e49328e6f2
Publikováno v:
Navigation, Vol 69, Iss 1 (2022)
A modified generalized trigonometric series (GTS) function is presented for the joint estimation of local ionospheric activities and differential code biases (DCBs) of the third-generation BeiDou navigation satellite system (BeiDou-3). Using observat
Externí odkaz:
https://doaj.org/article/2421589e429f4d23805fd7bd40f36cdd
Publikováno v:
IEEE Access, Vol 8, Pp 210171-210182 (2020)
To reduce the convergence time in the real-time precise point positioning (PPP), the zenith tropospheric delay (ZTD) needs to be modeled with high accuracy and sent to the users to be introduced as a priori value. Because of the height difference bet
Externí odkaz:
https://doaj.org/article/a8124334b9574905b19057323b6233fb
Publikováno v:
Results in Physics, Vol 19, Iss , Pp 103574- (2020)
With the wide civil applications of low-cost Global Navigation Satellite System (GNSS) receiver, precise positioning based on low-cost receiver attracted extensive attention. Because the noise of pseudo-range measurement is one of the important facto
Externí odkaz:
https://doaj.org/article/d2f823072e9d45e89cd210ebb85fdc4a