Results 111 to 120 of about 8,653 (226)
A Method to Determine BeiDou GEO/IGSO Orbital Maneuver Time Periods
Sensors, 2019 Because there are different types of BeiDou constellations with participating geostationary orbit (GEO) and inclined geosynchronous orbit (IGSO) satellites, the maneuvering frequency of BeiDou satellites is higher than that of other navigation systems ...
Zhiwei Qin +7 more
doaj +1 more source
Sensors, 2017 The failure to detect anomalies and maneuvering of the orbits of navigation satellite sensors will deteriorate the performance of positioning and orbit determination.
Fei Ye +3 more
doaj +1 more source
The Broadcaster-Repacking Problem [PDF]
arXiv, 2016 The Federal Communications Commission's (FCC's) ongoing Incentive Auction will, if successful, transfer billions of dollars of radio spectrum from television broadcasters to mobile-network operators. Hundreds of broadcasters may go off the air. Most of those remaining on the air, including hundreds of Canadian broadcasters not bidding, will have to ...
arxiv
Accuracy Study of a Single Frequency Receiver Using a Combined GPS/GALILEO Constellation [PDF]
, 2005 As the date of availability of GALILEO approaches, more and more interest appears to pre-evaluate the accuracy of GALILEO and combined GPS+ GALILEO receivers. The majority of simulations made are based on the general use of UERE (often presented as a
Belabbas, Boubeker +2 more
core
Examining quality of DGNSS derived positioning in data in urban city -- A case study of an urban city in India [PDF]
arXivGNSS observations are carried out in static mode/ Differential global navigation satellite system (DGNSS) and dynamic mode / Real time Kinematics (RTK) mainly. RTK mode of observation is useful in case of navigation whereas in order to determine very precise positioning, static / DGNSS/ DGPS mode is recommended.
arxiv
Broadcast Domination of Triangular Matchstick Graphs and the Triangular Lattice [PDF]
arXiv, 2018 Blessing, Insko, Johnson and Mauretour gave a generalization of the domination number of a graph $G=(V,E)$ called the $(t,r)$ broadcast domination number which depends on the positive integer parameters $t$ and $r$. In this setting, a vertex $v \in V$ is a broadcast vertex of transmission strength $t$ if it transmits a signal of strength $t-d(u,v)$ to ...
arxiv
Satellite Emission Range Inferred Earth Survey (SERIES) project [PDF]
The Global Positioning System (GPS) was developed by the Department of Defense primarily for navigation use by the United States Armed Forces. The system will consist of a constellation of 18 operational Navigation Satellite Timing and Ranging (NAVSTAR ...
Buennagel, L. A. +4 more
core +1 more source
Accuracy Improvement of GNSS and Real Time Kinematic Using Egyptian Network as a Case Study [PDF]
, 2013 Differential Global Positioning system (DGPS) is an observation technique that can be used to reduce the ionosphere effects arising in ordinary GNSS. DGPS technique is used to increase the GNSS accuracy by reducing error associated with pseudo range but ...
Ehigiator – Irughe, R. +2 more
core +1 more source
Broadcast Graph Is NP-complete [PDF]
arXivThe broadcast model is widely used to describe the process of information dissemination from a single node to all nodes within an interconnected network. In this model, a graph represents the network, where vertices correspond to nodes and edges to communication links.
arxiv
Satellitenorbit und -ephemeridenbestimmung mit Hilfe von Intersatellitenverbindungen [PDF]
, 2001 Global navigation satellite systems like GPS, GLONASS or the future systems like Galileo require precise orbit and clock estimates in order to provide high positioning performance. Within the frame of this Ph. D. thesis, the theory of orbit determination
Wolf, Robert
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