Results 51 to 60 of about 5,818,450 (268)

Analysis of regionally enhanced GPS orbit and clock solutions and contribution to improvement of real-time precise point positioning

, 2012
This work experimentally examines the performance benefits of a regional CORS network to the GPS orbit and clock solutions for supporting real-time Precise Point Positioning (PPP).
Zhang, Weixing, Feng, Yanming, Wang, Charles, Gu, Shengfeng, Shi, Chuang   +4 more
core   +1 more source

Multi-GNSS Combined Precise Point Positioning Using Additional Observations with Opposite Weight for Real-Time Quality Control

Remote Sensing, 2019
The emergence of multiple global navigation satellite systems (multi-GNSS), including global positioning system (GPS), global navigation satellite system (GLONASS), Beidou navigation satellite system (BDS), and Galileo, brings not only great ...
Wenju Fu, Guanwen Huang, Yuanxi Yang, Qin Zhang, Bobin Cui, Maorong Ge, Harald Schuh   +6 more
doaj   +1 more source

Kinematic Precise Point Positioning Performance-Based Cost-Effective Robot Localization System

Applied Sciences, 2023
The use of high-precision positioning systems in modern navigation applications is crucial since location data is one of the most important pieces of information in Industry 4.0, especially for robots operating outdoors.
Ashraf Farah, Mehdi Tlija
doaj   +1 more source

Precise Point Positioning Technique Versus Relative Positioning

Baltic Surveying, 2020
Precise point positioning is a GNSS based positioning method that is known to regaining more precise information about major systematical errors in its functional model. This method is seen as an advanced version of the conventional absolute positioning method that is able to offer higher accuracy of the estimate parameter.
Stepan Savchuk, Janusz Cwiklak, Alina Khoptar   +2 more
openaire   +1 more source

GPS AND GLONASS COMBINED STATIC PRECISE POINT POSITIONING (PPP) [PDF]

The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2016
With the rapid development of multi-constellation Global Navigation Satellite Systems (GNSSs), satellite navigation is undergoing drastic changes. Presently, more than 70 satellites are already available and nearly 120 more satellites will be available ...
D. Pandey, R. Dwivedi, O. Dikshit, A. K. Singh   +3 more
doaj   +1 more source

Precise Point Positioning under degraderte skogsforhold

, 2014
M ...
Jensen, Andreas Saxi
openaire   +2 more sources

Solid Pseudopapillary Neoplasm of the Pancreas in Children and Adolescents: Expert Recommendations

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Solid pseudopapillary neoplasm of the pancreas (SPN) is a rare low‐grade malignant exocrine pancreatic tumor, mostly discovered during the second decade of life in females, with a very good prognosis, provided microscopically complete surgical excision is achieved.
Sabine Irtan, Michael Abele, Calogero Virgone, Michaela Kuhlen, Ricardo Lopez‐Almarez, Tal Ben‐Ami, Ewa Bien, Maja Cesen, Malgorzata A. Krawczyk, Andrea Ferrari, Gianni Bisogno, Yves Reguerre, Dominik T. Schneider, Louise Galmiche, Jorg Fuchs, Sarah Braungart, Bilgehan Yalcin, Ines B. Brecht, Daniel Orbach   +18 more
wiley   +1 more source

Modeling and assessment of five-frequency BDS precise point positioning

Satellite Navigation, 2022
Since its full operation in 2020, BeiDou Satellite Navigation System (BDS) has provided global services with highly precise Positioning, Navigation, and Timing (PNT) as well as unique short-message communication.
Zhiyuan Wu, Qianxin Wang, Chao Hu, Zhihao Yu, Wei Wu   +4 more
doaj   +1 more source

Central Nervous System Tumors Among Infants in Canada: A Report From CYP‐C

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Background Central nervous system (CNS) tumors in infants are rare, pose unique clinical challenges, and lack large‐scale evidence‐based data to guide management. This study seeks to describe CNS tumors in Canadian infants and to compare their outcomes with those of older children.
Samuel Sassine, Hallie Coltin, Sylvia Cheng, Lucie Lafay‐Cousin, Vanan Issai Magimairajan, Craig Erker, Stéphanie Vairy, Lynette Bowes, Adam Fleming, Donna Johnston, Sarah McKillop, Roona Sinha, Julie Bennett, Christina Coleman, Laura Wheaton, Shayna Zelcer, Samuele Renzi, Thai Hoa Tran   +17 more
wiley   +1 more source

Galileo Time Transfer with Five-Frequency Uncombined PPP: A Posteriori Weighting, Inter-Frequency Bias, Precise Products and Multi-Frequency Contribution

Remote Sensing, 2022
Galileo satellites can broadcast signals on five frequencies, namely E1, E5A, E5B, E5 (A+B), and E6. The multi-frequency integration has become an emerging trend in Global Navigation Satellite System (GNSS) data processing.
Zhehao Zhang, Lin Pan
doaj   +1 more source