Results 111 to 120 of about 3,306 (203)
Application of GPS tracking techniques to orbit determination for TDRS [PDF]
In this paper, we evaluate two fundamentally different approaches to TDRS orbit determination utilizing Global Positioning System (GPS) technology and GPS-related techniques. In the first, a GPS flight receiver is deployed on the TDRSS spacecraft.
Haines, B. J. +3 more
core +1 more source
Simulation and analysis of differential global positioning system for civil helicopter operations [PDF]
A Differential Global Positioning System (DGPS) computer simulation was developed, to provide a versatile tool for assessing DGPS referenced civil helicopter navigation.
Cabak, A. R., Denaro, R. P.
core +1 more source
Representations of Time Coordinates in FITS
, 2014 In a series of three previous papers, formulation and specifics of the representation of World Coordinate Transformations in FITS data have been presented. This fourth paper deals with encoding time.
Allen, Steven L. +5 more
core +1 more source
Remote SensingThe signal-in-space range error (SISRE) has a direct impact on the performance of global navigation satellite systems (GNSSs). It is an important indicator of navigation satellite space server performance.
Zhenghua Dong, Songlin Zhang
doaj +1 more source
A multi-satellite orbit determination problem in a parallel processing environment [PDF]
The Engineering Orbit Analysis Unit at GE Valley Forge used an Intel Hypercube Parallel Processor to investigate the performance and gain experience of parallel processors with a multi-satellite orbit determination problem.
Anderle, R. J., Deakyne, M. S.
core +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
core +1 more source
Izračun položaja GPS-satelita iz podatkov preciznih efimerid : GPS-orbit computation from precise ephemeris data [PDF]
Geodetski Vestnik, 2005 The article describes the theoretical point of view of the GPS precise ephemerides application that should be used in most precise GPS processing. Regarding broadcast, precise ephemerides allow us to achieve a much better accuracy of the final GPS ...
Bojan Stopar +1 more
doaj
Modernized IRNSS Broadcast Ephemeris Parameters [PDF]
, 2015 India has successfully stepped into satellite Navigation system with the launch of its first three IRNSS satellites IRNSS 1A, 1B and 1C. IRNSS provides two types of services, Standard Posting Service (SPS), which is open for civilian use and the ...
A S Ganeshan, S C Rathnakara +2 more
core +1 more source
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
core +1 more source
EGNOS based virtual reference stations [PDF]
, 2008 We propose the use of the European Geostationary Navigation Overlay Service (EGNOS) data - real time on line data provided by SISNeT - to develop Virtual Reference Stations and, thus, increase the quality of the Position, Velocity an Time (PVT) solution ...
Malheiro, Benedita +1 more
core