Results 131 to 140 of about 3,469 (207)
Broadcast Ephemeris Model of the BeiDou Navigation Satellite System
JOURNAL OF ENGINEERING SCIENCE AND TECHNOLOGY REVIEW, 2017 Xie Xiaogang, Lu Mingquan
openaire +1 more source
Validation of GPS-Based Monitoring and Remote Sensing of Ice-Shelf and Ice-Sheet Movement Changes. [PDF]
Sensors (Basel), 2021 Li X +6 more
europepmc +1 more source
This semi-annual progress report provides an overview of the work performed during the first six months of Grant NAG 1 1423, titled 'GPS Interferometry'. The Global Positioning System (GPS) is a satellite-based positioning and timing system.
Vangrass, Frank
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Klobuchar, NeQuickG, BDGIM, GLONASS, IRI-2016, IRI-2012, IRI-Plas, NeQuick2, and GEMTEC Ionospheric Models: A Comparison in Total Electron Content and Positioning Domains. [PDF]
Sensors (Basel), 2023 Yasyukevich YV +9 more
europepmc +1 more source
The application of NAVSTAR Differential GPS to civil helicopter operations [PDF]
Principles concerning the operation of the NAVSTAR Global Positioning Systems (GPS) are discussed. Selective availability issues concerning NAVSTAR GPS and differential GPS concepts are analyzed.
Beser, J., Parkinson, B. W.
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Determination of GPS orbits to submeter accuracy [PDF]
Orbits for satellites of the Global Positioning System (GPS) were determined with submeter accuracy. Tests used to assess orbital accuracy include orbit comparisons from independent data sets, orbit prediction, ground baseline determination, and formal ...
Bertiger, W. I. +2 more
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GNSS Ephemeris with Graceful Degradation and Measurement Fusion [PDF]
A method for providing an extended propagation ephemeris model for a satellite in Earth orbit, the method includes obtaining a satellite's orbital position over a first period of time, applying a least square estimation filter to determine coefficients ...
Garrison, James Levi +1 more
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Research on Improving Satellite Positioning Precision Based on Multi-Frequency Navigation Signals. [PDF]
Sensors (Basel), 2022 Kong T, Ma L, Ai G.
europepmc +1 more source
DMA precise time and time interval requirements [PDF]
Defense Mapping Agency timing requirements ranging from milliseconds to tenths of nanoseconds and its use of geodetic astronomy and satellite geodesy programs are discussed in ...
Carnahan, R. H.
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