Katsumi Ohnishi [ ID: sapt-1801-0003 ] Overview – Abstract – The objective of this paper is to examine whether or not the α-β filter is a version of the Kalman filter. We will closely study the closed-form of the time-variant α-β filter and the stability conditions of the constant α-β filter. Since these problems were… Read More »
Thomas S. Yan, Peter Mumford, Andrew Dempster, Chris Rizos Manosh Fernando, Nam Hoang [ link-1708-0030 ] Link to PSU.edu : Assisted-GNSS (A-GNSS) devices (clients) require a source for providing the assistance data that enable positioning in a wide variety of environments, particularly areas of weak signal strength. This paper introduces an Open Source GNSS Reference… Read More »
Jan Kouba [ link-1708-0029 ] Link to IGS : Since 1994, the International GNSS Service (IGS) has provided precise GPS orbit products to the scientific community with increased precision and timeliness. Many national geodetic agencies and GPS users interested in geodetic positioning have adopted the IGS precise orbits to achieve centimeter level accuracy and ensure… Read More »
Daniel Haugård Olesen, Jakob Jakobsen, Hans-Henrik von Benzon, Per Knudsen [ link-1708-0028 ] Link to DTU.dk : This paper describes the current activities of GPS/GNSS Software receiver development at DTU Space. GNSS Software receivers have received a great deal of attention in the last two decades and numerous implementations have already been presented. DTU Space… Read More »
James J. Miller [ link-1708-0027 ] Link to GPS.gov : Brief – This document describes GPS PNT sercives, growing GPS uses in space, space service volume (SSV), Magnetospheric Multi-Scale (MMS) Mission, MMS Navigator System, Satellite Laser Ranging (SLR) on GPS III, TDRSS Augmentation Satellite Service (TASS), etc.
Luke Winternitz [ link-1708-0026 ] Link to NASA : Brief – This document describes the U.S. Global Positioning System, satellite navigation system fundamentals, and other Global Navigation Satellite Systems and augmentations. It was published for 42nd Annual Time and Frequency Metrology Seminer on 8 June 2017.
Pierluigi De Simone, Riccardo Nicolè, Gian Paolo Plaia, Lucia Ciccotti, Stefano Lagrasta [ link-1708-0025 ] Link to webalice.it : Technology has used us to sudden accelerations; devices used only in very specific dedicated applications may spread to everyday use quickly. This is certainly the case for navigation equipments. Once used only by specialized personnel for… Read More »
Rainer Mautz [ link-1708-0023 ] Link to ICDST : In the age of automation the ability to navigate persons and devices in indoor environments has become increasingly important for a rising number of applications. With the emergence of global satellite positioning systems, the performance of outdoor positioning has become excellent, but many mass market applications… Read More »
European Space Agency (ESA) [ link-1708-0022 ] Link to ESA : This document describes the opportunities offered by satellite navigation systems (and more specifically, the Galileo system) and their signals to different scientific communities, as well as the potential benefits for the Galileo system resulting from its scientific exploitation. This document was published in 2010… Read More »
Hiroyuki Ito, Takao Morikawa, Hitoshi Ishida, Shin’ichi Hama, Kazuhiro Kimura, Shouichirou Yokita, National Institute of Information and Communications Technology (NICT) [ link-1708-0021 ] Link to USNO : A Bread Board Model of a spaceborne hydrogen maser atomic clock for the satellite positioning system using Quasi-Zenith Satellites has been developed. Anal- ysis and experiments for technical… Read More »
United Nations, Office for Outer Space Affaires [ link-1708-0019 ] Link to unoosa.org : Global Navigation Satellite Systems (GNSS) include constellations of Earth-orbiting satellites that broadcast their locations in space and time, of networks of ground control stations, and of receivers that calculate ground positions by trilateration. GNSS are used in all forms of transportation:… Read More »
Alain L. Kornhauser [ link-1708-0018 ] Link to prinston.edu : Recently, there is an increase interest in positioning techniques based on Global Navigation Satellite Systems (GNSS) such as Global Positioning System (GPS), cellular network infrastructure or on the integration of the two technologies for a wide spread of Applications such as Automatic Vehicle Location (AVL),… Read More »
U.S. Coast Guard [ link-1708-0017 ] Link to loran-history.info : The purpose of this report is to present, in a single volume, a condensation of LORAN-C information of interest to management, operational and engineering personnel. The report is divided into two parts. Part I provides a general description of the LORAN-C system, its history, its… Read More »
MIT Series [ link-1708-0016 ] Link to JLAB : The Loran system is a radio aid to navigation. It provides means, independent of all other aids (including even the compass and the log or air-speed meter), for locating a moving vehicle at a given moment and for directing it to a predetermined point or along… Read More »
Charles Curry, Charles Schue [ link-1708-0014 ] Link to ATIS : This document describes eLoran background, eLoran today, testing in UK and USA, UTC delivery: vulnerability analysis, what can possibly go wrong?, mitigation, further reading, etc.
Claude Boucher, CGPC [ link-1708-0014 ] Link to IGS : Brief – This document describes the Galileo Terrestrial Reference Frame (GTRF), use of Galileo for ITRF, organisational aspects, liabiliy of ITRF. This presented in IGS Workshop at Bern in 2004.
IERS Technical Note [ link-1708-0013 ] Link to IERS : Terrestrial Reference Systems and their realizations. A Terrestrial Reference System (TRS) is a spatial reference system co-rotating with the Earth in its diurnal motion in space. In such a system, positions of points attached to the solid surface of the Earth have coordinates which undergo… Read More »
Zuheir Altamimi, Xavier Collilieux, Laurent Métivier, Paul Rebischung, Daphné Lercier, IGN France [ link-1708-0012 ] Link to NASA : This document describes brief description of space geodesy techniques, ITRF construction, ITRF and science applications: Sea Level, Glacial Isostatic Adjustment (GIA), Plate Motion; Limiting factors and challenges for the future: Network configuration, Technique systematic errors, Site… Read More »
FIG GUIDE [ link-1708-0011 ] Link to FIG : The International Federation of Surveyors (FIG) Commission 5 is responsible for assisting practising surveyors in FIG member associations to apply Positioning and Measurement technologies efficiently and effectively in their day-to-day survey activities. One of the most significant technologies to emerge in recent decades has been Global… Read More »
European Union [ link-1708-0010 ] Link to GSA : Galileo is the European Global Navigation Satellite System (EGNSS), under civil control, that provides satellite positioning services to European citizens and worldwide. Galileo provides ranging signals in three different frequency bands, enabling single- and dual- frequency positioning for users equipped with suitable receivers. As one of… Read More »