Zobrazeno 1 - 10
of 2 899
pro vyhledávání: '"global navigation satellite system (gnss)"'
Publikováno v:
Geodesy and Geodynamics, Vol 15, Iss 6, Pp 642-651 (2024)
The Global Navigation Satellite System (GNSS) is widely utilized for accurate positioning. One commonly applied method to obtain precise coordinate estimates is by implementing the relative positioning in network mode. However, this approach can be c
Externí odkaz:
https://doaj.org/article/3d7b7959e1514ac58273cf2c91bb4935
Publikováno v:
Geo-spatial Information Science, Pp 1-13 (2024)
In the processing of Precise Point Positioning (PPP) data, the receiver clock is approached with nearly infinite uncertainty, rendering it difficult to fulfill the requirements of high-precision time frequency applications. Therefore, a receiver cloc
Externí odkaz:
https://doaj.org/article/034876a6ff7c41d5a9351dc286c106d8
Publikováno v:
Geo-spatial Information Science, Pp 1-19 (2024)
Research vessels are typically equipped with multiple receivers for positioning and attitude measurement; however, there is no data interaction or model fusion to implement the Precise Point Positioning (PPP) for these receivers. Therefore, a Constra
Externí odkaz:
https://doaj.org/article/9ac0f4e9bb1f4bdb9d1af247842f3774
Population fusion optimization algorithm for GNSS integer ambiguity resolution based on PSO and AFSA
Publikováno v:
工程科学学报, Vol 46, Iss 12, Pp 2246-2256 (2024)
Carrier phase measurement plays a crucial role in achieving rapid and high-precision positioning within a global navigation satellite system (Global navigation satellite system, GNSS). A pivotal aspect of this process is the accurate resolution of th
Externí odkaz:
https://doaj.org/article/b28d7926e6f049e5a150cd9715c8958d
Autor:
Dinesh Sathyamoorthy, Ahmad Firdaus Ahmad Kazmar, Amirah Sakinah Mohd Rozlan, Mohammad Ghazdly Adril Ghazali, Noor Hazimah Syamila Mat Najib
Publikováno v:
Journal of Engineering Technology and Applied Physics, Vol 6, Iss 1, Pp 100-107 (2024)
This paper aims to assess the impact of Global Navigation Satellite System (GNSS) spoofing on the performance of a Garmin GPSMAP 66sr dual-frequency GNSS receiver. The evaluation is conducted through field assessments under three conditions: 1) singl
Externí odkaz:
https://doaj.org/article/3987f334a53d42ef959fc5bb7f23f805
Autor:
Wei-Chia Hung, Cheinway Hwang, Shao-Hung Lin, Chuan-Sheng Wang, Yi-An Chen, Pei-Ching Tsai, Kuan-Chung Lin
Publikováno v:
Frontiers in Earth Science, Vol 12 (2024)
The Choushui River Alluvial Fan (CRAF) is a major agricultural area in Taiwan with heavy groundwater usage. The extraction of groundwater here has caused land subsidence, which is now a significant global environmental issue. This study analyzes land
Externí odkaz:
https://doaj.org/article/d7593dc1c034449c9e9cf0c069018057
Publikováno v:
IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, Vol 17, Pp 17998-18011 (2024)
Water vapor is a critical parameter in the earth's climate system, affecting precipitation and global warming. Precipitable water vapor (PWV) is a measure of atmospheric water vapor content that can be obtained by multiple methods. In this study, we
Externí odkaz:
https://doaj.org/article/924a7cb0981c45928bb60f39c6f55294
Publikováno v:
IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, Vol 17, Pp 17567-17579 (2024)
Geospatial data have been transformative for the monitoring of the Earth, yet, as in the case of (geo) physical monitoring, the measurements can have variable spatial and temporal sampling and may be associated with a significant level of perturbatio
Externí odkaz:
https://doaj.org/article/d8bca21ae7a34d53bdf8e4ca76366988
Publikováno v:
IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, Vol 17, Pp 16487-16496 (2024)
The Laplace smoothing operator is used to constrain the relationship between the target grid and neighboring grids in the terrestrial water storage (TWS) inversion using global navigation satellite system (GNSS) observations. We propose an enhancemen
Externí odkaz:
https://doaj.org/article/ff02e476797147049b841d44bc4cb938