Results 11 to 20 of about 19,876 (292)
Reliability Measures in GNSS Multi-constellation Systems
EUROPEAN RESEARCH STUDIES JOURNAL, 2021 peer ...
Gucma, Maciej, Boc, Renata, Waz, Mariusz
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Engineering Proceedings, 2023 Present day GNSS offers a variety of signals from different satellite constellations and at various frequencies. This paper is based on the work conducted in the project SiL 2.0 and will focus on the study of multi-constellation/multi-frequency GNSS ...
Uttama Dutta, Jan Johansson
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Engineering Proceedings, 2023 Global navigation satellite systems (GNSSs) are an integral part of global positioning. However, because GNSS performance is impacted by signal obscuration and the presence of multipath in urban and deep urban environments, it is not accurate, reliable ...
Esther Anyaegbu, Paul Hansen, Bo Peng
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Vertical Protection Level Optimization and Availability Analysis for Advanced RAIM
Frontiers in Energy Research, 2022 With the introduction of global navigation satellite systems (GNSSs) in aviation, there has been increased dependency on GNSS position. Multi-constellation GNSS services and equipment will remain a solution for many aircraft positions in safety.
Ershen Wang +7 more
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Optimization of Multi-Mission CubeSat Constellations with a Multi-Objective Genetic Algorithm
Remote Sensing, 2023 The increasing demand for low-cost space-borne Earth observation missions has led to small satellite constellation systems development. CubeSat platforms can provide a cost-effective multiple-mission space system using state-of-the-art technology.
Shimeles Demissie Melaku, Hae-Dong Kim
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Helmert Variance Component Estimation for Multi-GNSS Relative Positioning [PDF]
, 2020 The Multi-constellation Global Navigation Satellite System (Multi-GNSS) has become the standard implementation of high accuracy positioning and navigation applications.
Fang, Zhenlong +5 more
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Multi-constellation GBAS: How to benefit from a second constellation [PDF]
2016 IEEE/ION Position, Location and Navigation Symposium (PLANS), 2016 In this paper we analyze and discuss the impact of ionospheric scintillations and multipath on the availability of the current single-frequency single-constellation Ground Based Augmentation System (GBAS). Scintillation effects, which usually occur around plasma bubbles, cause the receiver to lose lock of one or more satellites, leading to potentially ...
Caamano, Maria +3 more
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Research on optimization method of reconnaissance constellation based on multi-objective evolutionary algorithm [PDF]
Zhihui kongzhi yu fangzhenIn order to further solve the optimization problem of reconnaissance constellation and strengthen the construction of space-based reconnaissance system, the current optimization methods of reconnaissance constellation are studied and summarized.
LIU Yali, XIONG Wei
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FLAMINGO – Fulfilling enhanced location accuracy in the mass-market through initial GalileO services [PDF]
, 2018 This paper discusses FLAMINGO, an initiative that will provide a high accuracy positioning service to be used by mass market applications. The status and future for the initiative are discussed, the required accuracies and other location parameters are ...
Arzel, Laurent +7 more
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Applied Sciences, 2020 The received global navigation satellite system (GNSS) signal has a very low power due to traveling a very long distance and to the nature of the signal’s propagation medium. Thus, GNSS signals are easily susceptible to signal interference.
Haidy Elghamrawy +3 more
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