Results 21 to 30 of about 3,586,600 (279)

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, Felux, Michael, Circiu, Mihaela-Simona, Gerbeth, Daniel   +3 more
openaire   +5 more sources

Analysis of Multi-Constellation GNSS Signal Quality [PDF]

The International Technical Meeting of the The Institute of Navigation, 2016
The code pseudo-ranges and phase pseudo-ranges are affected by the systematic errors or biases and random noises. These errors can be classified into three groups, satellite related errors, propagation-medium related errors and receiver related errors (Hofmann-Wellenhof, Lichtenegger and Collins 2001; Leick 2004).
Terri Richardson, Chris Hill, Terry Moore, Pieter Toor   +3 more
openaire   +1 more source

Experimental Evaluation of the Impact of Different Types of Jamming Signals on Commercial GNSS Receivers

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, Malek Karaim, Mohamed Tamazin, Aboelmaged Noureldin   +3 more
doaj   +1 more source

On multidimensional BICM-ID constellation labelling [PDF]

, 2010
It is widely recognised that the choice of a specific bit-to-symbol mapping scheme or a beneficial constellation labelling is an influential factor, when designing bit-inter-leaved coded modulation using iterative decoding (BICM-ID) for the sake of ...
Alamri, Osamah, M. El-Hajjar, Poupart, Blandine, Ng, Soon, El-Hajjar, Mohammed, S.-X. Ng, B. Poupart, O. Alamri, L. Hanzo, Hanzo, Lajos   +9 more
core   +1 more source

Multi-constellation GNSS scintillation at mid-latitudes [PDF]

2017 XXXIInd General Assembly and Scientific Symposium of the International Union of Radio Science (URSI GASS), 2017
Radio wave scintillation can result in severe channel fading and random phase variations that can interfere with the performance of a radar, communication or GPS system. While it is well known that Ionospheric scintillation occurs within the high and low latitude regions, there has been minimal research done within the middle latitudes. However, recent
Marc H. Jean, James P. Conroy, Wayne A. Scales   +2 more
openaire   +1 more source

A Tightly Coupled RTK/INS Algorithm with Ambiguity Resolution in the Position Domain for Ground Vehicles in Harsh Urban Environments

Sensors, 2018
Vehicles driving in urban canyons are always confronted with a degraded Global Navigation Satellite System (GNSS) signal environment. The surrounding obstacles may cause signal reflections or blockages, which lead to large multipath noises and ...
Wei Li, Wenyi Li, Xiaowei Cui, Sihao Zhao, Mingquan Lu   +4 more
doaj   +1 more source

Research on Satellite Selection Strategy for Receiver Autonomous Integrity Monitoring Applications

Remote Sensing, 2021
Satellite selection is an effective way to overcome the challenges for the processing capability and channel limitation of the receivers due to superabundant satellites in view.
Huibin Wang, Yongmei Cheng, Cheng Cheng, Song Li, Zhenwei Li   +4 more
doaj   +1 more source

Multi‐constellation ARAIM exploiting satellite motion

NAVIGATION, 2020
In this work, a new time-sequential positioning and fault detection method is developed for dual-frequency, multi-constellation Advanced Receiver Autonomous Integrity Monitoring (ARAIM). Unlike conventional “snapshot” ARAIM, sequential ARAIM exploits changes in satellite geometry at the cost of slightly higher computation and memory loads.
Mathieu Joerger, Boris Pervan
openaire   +1 more source

Multi-Ground Station Collaborative Measurement and Control Technology for Giant Constellation System

天地一体化信息网络, 2023
Measurement and control technology is the key technology to ensure the effi cient operation, maintenance and management of the constellation system.In recent years, with the continuous expansion of the constellation scale, mega-constellation system has ...
Yang LIU, Di ZHOU, Min SHENG, Jiandong LI, Shiguang HAO, Xiaotian ZHENG   +5 more
doaj   +2 more sources

Autonomous satellite constellation for enhanced Earth coverage using coupled selection equations [PDF]

, 2013
This paper presents a novel solution to the problem of autonomous task allocation for a self-organising constellation of small satellites in Earth orbit.
Colombo, Camilla, Mingotti, Giorgio, McInnes, Colin, Mushet, Garrie   +3 more
core   +3 more sources