RESEARCH PAPERS

global positioning system gps research papers




Relativity in the global positioning system
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ABSTRACT The Global Positioning System (GPS) uses accurate, stable atomic clocks in satellites and on the ground to provide world-wide position and time determination. These clocks have gravitational and motional frequency shifts which are so large that, without

Elimination of the travel diary: Experiment to derive trip purpose from global positioning systemtravel data
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Several recent pilot studies combined Global Positioning System (GPS) technology with travel survey data collection to evaluate opportunities for improving the quantity and accuracy of travel data. These studies used GPS to supplement traditional data elements

GLOBAL POSITIONING SYSTEM
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The idea of satellite navigation appeared in the 50-ies. At the time when the Soviet Union launched the first satellite, American scientists led by Richard Kershner, saw the signal coming from the Soviet satellite, and found out that due to the Doppler effect the frequency

Global Positioning System
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Mashup is an approach to creating composite dynamic web sites that has quickly gained popularity due to the proliferation of reliable online sources of maps, web feeds, and other content that can be accessed via relatively simple published interfaces (APIs). Online

Global Positioning System
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Advancements in global positioning system (GPS) technology now make GPS route choice data collection for travel diary studies and other transportation applications a reality. Opportunities abound for increased quantities of data, for improved quality of data, and for

Global Positioning System
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Advancements in global positioning system (GPS) technology now ma. ke GPS route choice data collection for travel diary studies and other transportation applications a reality. Opportunities abound for increased quantities of data, for improved quality of data, and for

Relativity and the global positioning system
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Neil Ashby relativistic effects down to a few hundredths of a nanosecond. But the second- order Doppler shift of an orbiting atomic clock, if it were not taken into account, would cause an error this large to build up in less than half a second. An effect of comparable size is

The global positioning system
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ABSTRACT The paper provides a top-level perspective on how the global positioning system works, how its services are used, and delves into the most important technical and geo- political factors affecting its long-term availability in an international setting. Index Terms

Global Positioning System
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pean Renaissance and were to come even closer, up to and including, the European Enlightenment of the eighteenth century. This involved, again, an enrichment of the conception of humanity and an even broader and more concrete extension of the ideas

Efficient map matching of large global positioning system data sets: Tests on speed-monitoring experiment in Z rich
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Speed and location observations from Global Positioning System (GPS) loggers are quickly becoming an important source of data for travel behavior researchers. Postprocessing these data requires identifying the location of the GPS data points on a coded map of the

Time and frequency measurements using the global positioning system
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This paper describes how Global Positioning System (GPS) satellite signals are used in time and frequency metrology. It discusses how a GPS receiver can provide a reference signal for frequency calibrations and time synchronization. It also explains the several types of time

Using global positioning system travel data to assess real-world energy use of plug-in hybrid electric vehicles
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J Gonder, T Markel, M Thornton Record: Journal of the 2007 Trans Res Board Plug-in hybrid electric vehicles (PHEVs) have received considerable recent attention for their potential to reduce petroleum consumption significantly and quickly in the transportation sector. Analysis to aid the design of such vehicles and predict their real-

Global Positioning System as data collection method for travel research
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G Draijer, N Kalfs, J Perdok Transportation Research Record: 2000 Trans Res Board The technology of Global Positioning Systems (GPS) provides new ways for collecting information about travel behavior. When it is used in combination with an electronic travel diary, valuable information of high quality about travel behavior becomes available. To

Global ionospheric total electron content mapping using the Global Positioning System
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A Komjathy 1997 sideshow.jpl.nasa.gov ABSTRACT Space-based radio navigation systems such as the Navstar Global Positioning System (GPS) can provide us with a unique opportunity to study the effect of the ionosphere as the signals propagate from the satellites to the GPS receivers.

Understanding the GPS: An introduction to the global positioning system
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GT French 1996 pithoso.1sthost.org Similar to The Most Dangerous Game also understanding the gps an introduction to the global positioning system. Parece que no h quaisquer listas de reproduo disponveis para reproduzir. It's like Queen Elizabeth wrote a book apart from global. Lots of advice on

Total electron content obtained by using the global positioning system
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ABSTRACT A procedure is introduced to obtain the balance of measurements of differential group delays and differential carrier phase lead characteristics, both phenomena being due to the ionospheric total electron content (TEC) along the ray path from a Global

Forest canopy, terrain, and distance effects on global positioning system point accuracy
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ABSTRACT Tests were conducted to determine lhe realizable accuracies of the Global Positioning System under eastern North American forest conditions. The effects of terrain, forest canopy, number of consecutive position fixes, and WOP on accuracy were

Global positioning system measurements of crustal deformation in the Taiwan arc-continent collision zone
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ABSTRACT A 78station 270 km wide Global Positioning System (GPS) network which spans the arc-continent collision zone in southern Taiwan has been surveyed 5 times from 1990 ? 1994 with dual-frequency geodetic GPS receivers. The observed data are processed with

Comparative analysis of global positioning system-based and travel survey-based data
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This paper examines the driver demographics, driver travel characteristics, and driver adherence to survey protocol considerations that affect the likelihood of underreporting in a household travel survey. The research considers both the likelihood of vehicle driver trip

Direct global positioning system P-code acquisition field programmable gate array prototyping
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J Pang 2003 ohio.edu In order to have a good direct P-code acquisition hardware design, a good understanding of P-code acquisition property and a good searching algorithm are needed. The efficiency of a searching algorithm greatly affects the P-code acquisition time. Although the general

Multiple car-following data with real-time kinematic global positioning system
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GS Gurusinghe, T Nakatsuji, Y Azuta Record: Journal of 2002 Trans Res Board The real-time kinematic differential Global Positioning System (GPS) has facilitated a new horizon in traffic engineering. Multiple car-following experiments conducted with a real-time kinematic GPS with 10 vehicles participating in a probing field gave high-quality results in

Investigation of vehicles as probes using global positioning system and cellular phone tracking: field operational test
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YB Yim, R Cayford California Partners for Advanced Transit and 2001 escholarship.org ABSTRACT This paper reports on the first phase of the location technology evaluation for probe vehicles. Two technologies were evaluated, Global Positioning Systems (GPS) and the cellular phone tracking technology developed by US Wireless. Although GPS has shown

Impact of underreporting on mileage and travel time estimates: Results from global positioning system-enhanced household travel survey
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J Wolf, M Oliveira, M Thompson Transportation Research Record 2003 Trans Res Board Trip underreporting has long been a problem in household travel surveys because of the self-reporting nature of traditional survey methods. Memory decay, failure to understand or to follow survey instructions, unwillingness to report full details of travel, and simple

Global Positioning System(GPS) measurements in Turkey(1988-1992): kinematics of the African-Arabia-Eurasia plate collision zone
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MB Oral, RE Reilinger 1994 erl.mit.edu Much of the deformation in the eastern Mediterranean is caused by the northerly motion of the African and Arabian plates against the Eurasian plate. As a result, various tectonic features are observed: collision (Bitlis-Zagros, Caucasus), subduction (the Hellenic and

Accuracy issues with route choice data collection by using global positioning system
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J Wolf, S Hallmark, M Oliveira, R Guensler Record: Journal of 1999 Trans Res Board Advancements in global positioning system (GPS) technology now make GPS route choice data collection for travel diary studies and other transportation applications a reality. Opportunities abound for increased quantities of data, for improved quality of data, and for

Analysis of morning commute route choice patterns using global positioning system-based vehicle activity data
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H Li, R Guensler, J Ogle Transportation Research Record: 2005 Trans Res Board This paper examines morning commute route choices of 182 drivers, with the use of disaggregated Global Positioning System-based vehicle activity data collected during a 10- day period. This paper attempts to describe how these commuters tend to behave in the

Eighty weeks of global positioning system traces: approaches to enriching trip information
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J Wolf, S Sch Unfelder, U Samaga Record: Journal of 2004 Trans Res Board The recent Swedish Intelligent Speed Adaptation (ISA) study included a component that involved the installation of units based on the Global Positioning System (GPS) in hundreds of cars in three Swedish cities, Borl nge, Lund, and Lidk ping; these vehicles were

Using airborne video, global positioning system, and geographical information systemtechnologies for detecting and mapping citrus blackfly infestations
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JH Everitt, DE Escobar, KR Summy Southwestern 1994 sswe.tamu.edu ABSTRACT This paper describes the application of airborne video data with global positioning system (GPS) and geographical information system (GIS) technologies for detecting citrus blackfly (Aleurocanthus woglumi Ashby) infestations in citrus orchards in

Accuracy of global positioning system for determining driver performance parameters
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J Ogle, R Guensler, W Bachman Record: Journal of the 2002 Trans Res Board Global Positioning System (GPS) technology can continuously monitor the time and location of vehicle usage. By recording and analyzing detailed vehicle activity data, researchers can analyze the safety and environmental implications of driver behavior and trip-making

Smoothing methods to minimize impact of Global Positioning System random error on travel distance, speed, and acceleration profile estimates
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J Jun, R Guensler, JH Ogle Transportation Research Record: 2006 Trans Res Board The Georgia Institute of Technology is evaluating the feasibility and effectiveness of mileage- based pricing programs as transportation control measures. Incentives were provided to study participants who change driving behavior in response to cent per mile pricing (fixed

Integration of inertial navigation system and global positioning system using Kalman filtering
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V Kumar 2004 vikaskumar.org ABSTRACT Inertial navigation blended with other navigation aids like GPS, has gained significance due to enhanced navigation and inertial reference performance. The INS, individually can calculate the position of the aircraft without any help from the outside

Relative accuracy of rectifications using coordinates determined from maps and the global positioning system
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ABSTRACT Because GPS measurements are not subject to digitizing Global positioning systems (GPS) that use code phase receiv-and map production errors, they have the potentid for proers have the potential for providing more accurate coordi- viding more

Crustal deformation in Alaska measured using the Global Positioning System
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HJ Fletcher 2002 aeic.alaska.edu ABSTRACT Re p eat observations using the G lobal Positioning System at sites on the Earth's surface enable the velocity of those sites to be estimated. These velocity estimates can be used to model the p rocesses of the crust's deformation by faulting and folding. The focus

Tracking elk hunters with the Global Positioning System
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LJ Lyon, MG Burcham 1998 fs.fed.us In recent years, research on management and protection of North American elk has expanded beyond purely biological considerations. Resource managers have demonstrated they can produce elk in a variety of habitats. We are now entering an era in which we will

Using global positioning system data to understand day-to-day dynamics of morning commute behavior
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H Li, R Guensler, J Ogle, J Wang Research Record: Journal of 2004 Trans Res Board The day-to-day variability of journey-to-work trips, including departure time, route choice, and trip-chaining behavior, was examined with Global Positioning System-based disaggregate morning commute data for 56 drivers during a 1-week period. Data were

The global positioning system and the Lorentz transformation
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constancy of the speed of light in free space. Based on these arguments, it is concluded that the laws of physics are indeed the same in all inertial systems, but that the fundamental units in which they are expressed

Analysis of Global Positioning System-based data collection methods for capturing multistop trip-chaining behavior
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An evaluation is presented of the effectiveness of Global Positioning System (GPS) data in capturing complex travel patterns characterized by multistop trip chains. This evaluation is made by analyzing tripchaining patterns for a sample of individuals from whom travel data

Enhanced system for link and mode identification for personal travel surveys based on global positioning systems
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This project developed an integrated Global Positioning System-geographic information system (GPS-GIS) to automate the processing of GPS-based personal travel survey data. Two versions of the analysis system were developed in this project: a GPS-alone system,

New empirically derived solar radiation pressure model for global positioning systemsatellites
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We describe the development and testing of a set of new and improved solar radiation pressure models for Global Positioning System (GPS) satellites that is based on four and one-half years of precise GPS orbital data. These empirical models show improved

Wide area differential operation of the global positioning system: ephemeris and clock algorithms
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YJ Tsai 1999 waas.stanford.edu ABSTRACT The Global Positioning System (GPS) provides great potential benefit for commercial aviation because of its low-cost and seamless navigation. While accuracy requirements can be achieved, several technical challenges have to be resolved in order

Evaluation of CORSIM car-following model by using Global Positioning System field data
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It has been recognized that CORSIM (and its constituent program, NETSIM) is one of the most widely used and effective computer programs for the simulation of traffic behavior on urban transportation networks. Its popularity is due in large part to the high level of detail

Effects of forest vegetation and topography on global positioning system collars for elk
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M Lindzey, AWU Leader 1997 fs.fed.us ABSTRACT Recent advances in technology have allowed the application of global positioning systems (GPS) technology to wildlife research. This new technology has some exciting potential that includes locating animals systematically during periods of severe

Global Positioning System
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F Ingenieurwesen, E Burlet lue.ethz.ch 4. Aufbau des GPS- Sytems 4.1 Das Raumsegment 4.2 Das Kontrollsegment 4.3 Das Nutzersegment 5. Verfahren der GPS-Positionsbestimmung 5.1 Das absolute Messverfahren 5.2 Das differentielle Messverfahren (DGPS, Differential GPS) 8. Absolute und differentielle

Collecting commercial vehicle tour data with passive global positioning system technology: Issues and potential applications
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The assessment of strategies designed to manage the continued growth in road-based freight and associated externalities has been hampered by a paucity of disaggregate data on commercial vehicle movements. When disaggregated data are available, the analysis

Modeling operating speed and deceleration on two-lane rural roads with global positioning system data
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In the road design process, speed variation along the road segment is an important issue to consider in adapting road geometry to drivers' expectations. To achieve this objective, speed criteria are used to evaluate road consistency. Being able to estimate the operating speed

Global Positioning System
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RA El 2002 gps-tuning.com El GPS (Global Positioning System: Sistema de Posicionamiento Global) es un sistema global de navegaci n por sat lite (GNSS) que permite determinar en todo el mundo la posici n de un objeto, una persona, un veh culo o una nave, con una precisi n hasta de

Travel time information using global positioning system and dynamic segmentation techniques
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The architecture and application of an updated methodology based on the Global Positioning System (GPS) for conducting travel time studies are described. The methodology is called Travel Time with GPS (TTG). TTG uses a general data model that includes a

Estimates of coseismic displacement and post-seismic deformation using Global Positioning System geodesy for the Bhuj earthquake of 26 January 2001
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The Mw= 7.6 Bhuj earthquake of 26 January 2001 that occurred in the Kachchh Rift Basin (KRB) was felt over a Wide area in the country. Global Positioning System (GPS) measurements were made at eleven sites in the epicentral area and at Jamnagar, south of

Relativistic effects in the global positioning system
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N Ashby Gravitation and Relativity: At the Turn of the Millenium. 1997 walkingitaly.com The Global Positioning System (GPS) provides a superb opportunity to introduce relativity concepts to undergraduate students, including non-physics majors. Familiarity with the numerous applications of GPS motivates students to understand relativity. A few

USING SI TRACABLE GLOBAL POSITIONING SYSTEM RADIO OCCULATION MEASUREMENTS FOR CLIMATE MONITORING
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SP Ho, YH Kuo, W Schreiner, X Zhou 2009 nldr.library.ucar.edu Global Positioning Sys tem (GPS) Radio Occultation (RO) data are an important component of the evolving global observing system (NRC 2007; WMO 2007; GCOS 2004). GPS RO is the only self calibrated observing tech nique from space whereby its fundamental

Interference mitigation approaches for the global positioning system
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The satellite-based Global Positioning System (GPS) has evolved from its origins as a worldwide military navigation aid to a pervasive utility affecting all walks of life in the civil and military communities. As a result, the system must operate in a much wider range of

GPS/INS based autonomous train positioning system



Fuzzy corrections in a GPS/INS hybrid navigation system
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the vehicle [3]. Because a satellite navigation system, either GPS or GNSS, is not autonomous, it is of the structured knowledge of ANFIS is much smaller and the knowledge is based on the HILIUTA ET AL.: FUZZY CORRECTIONS IN A GPS/INS HYBRID NAVIGATION SYSTEM

Performance enhancement of MEMS-based INS/GPS integration for low-cost navigation applications
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are low-cost navigation solutions pertaining mainly to the commercial land vehicles, unmanned autonomous vehicles, personal use of all INS and GPS data prior to a GPS outage to train the RBF The ANFIS-based module designed in this study works in real time to fuse MEMS

Global positioning systems, inertial navigation, and integration
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Using Double-Difference Measurements, 193 5.13 GPS Precise Point Positioning Services and 3 Space-Based Augmentation Systems (SBAS), 200 6.3 Ground-Based Augmentation System 7 GNSS and GEO Signal Integrity 236 7.1 Receiver Autonomous Integrity Monitoring

Design and development of a real-time DSP and FPGA-based integrated GPS-INS system for compact and low power applications
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and Durrant-Whyte, HF A high integrity IMU/GPS navigation loop for autonomous land vehicle 10] Qi, H., and Moore, JB Direct Kalman filtering approach for GPS/INS integration. El-Sheimy, N. A new weight updating method for INS/GPS integration architectures based on neural consistarget tracking applications that aided by in-vehicle sensors will improve the performance of positioning [39]. This paper presents an IMM filter-basedpositioning algo- rithm that considers the variety

An improved robust H8 multiple fading fault-tolerant filtering algorithm for INS/GPS integrated navigation
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Nanjing 210016; 2 Naval Aeronautical Engineering Academy,Yantai 264001);Research on GPS/INS integration based on H_ LI Changjiang China Academy of Space Technology,Beijing 100094,China;A distributed autonomous orbit determination Systembased on ground

The RUNE project: The integrity performances of GNSS-based railway user navigation equipment
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The RUNE technical solution is based on GNSS receivers. The navigation data will come from GPS with differential EGNOS corrections (European Geostationary Navigation Overlay Service) to enable autonomous and reliable determination of train position, velocity A new method of seamless land navigation for GPS/INS integrated system. The strapdown inertial navigation system (SINS) is an autonomoussystem, which includes three accelerometers and Based on the above mentioned theory, the AI method based on wavelet de-noising R=diog([lS 15 15 0.1 0.1 0.lP) is chosen based on the GPS output [I] Kelly AJ, 'A 3D State Space Formulation of a Navigation Kalman Filter for Autonomous Vehicles', The Baumann MSTU Press, 1998 [6] Lewantowicz ZH, Paschall RN, 'Deep Integration of GPS, INS, SAR and

GPS tracking system
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The sensor operates autonomously following application of operating power. US4359733 *, Sep 23, 1980, Nov 16, 1982, Neill Gerard KO, Satellite-based vehicle position Apr 15, 1997, General Electric Company, Method and mechanism for reduction of within-train reported data.

target state estimator
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the effectiveness of the adaptation by deriving an additional error signal to train the NN is to present target The approach will be demonstrated in an autonomous formation flight experiment with two UAVs in a

Web-based resources on GPS/INS integration
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vehicle, the ACFR has actively been involved in the development of navigation systems for autonomous vehicles of all a research project ''GPS/inertial data in aerial photogrammetry.'' The research focuses on direct georeferencing based on GPS/INS integration technology. With the autonomous European Satellite Navigations System Galileo, expected in 2008, an opportunity of a joint gyroscope, forward accelerometer and map matching, with sensor fusion methods Kalman filtering, rule based and fuzzy (2002) developed a GPS/INS multi-sensor

Maximum likelihood estimates of linear dynamic systems
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(2015) Constrained low-cost GPS/INS filter with encoder bias estimation for ground vehicles applications. (2014) A classification-based approach to monitoring the safety of dynamic systems. Yuan Xu, Xiyuan Chen, Qinghua Li. (2013) Autonomous Integrated Navigation for

Method and apparatus for improving the accuracy of position estimates in a satellite basednavigation system using velocity data from an inertial reference unit
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GPS processing system 302 is the most important part of the autonomous vehicle system 6, *, Schwartz, Sensitivity Analysis of an Integrated NAVSTAR GPS/INS Navigation System to Component Jul 27, 1999, Korver; Kelvin, Navigation/guidance system for a land-based vehicle.

Pedestrian tracking and navigation using an adaptive knowledge system based on neural networks
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Recent technological developments in positioning and tracking sensors including the Global PositioningSystem (GPS) modernization solution is used to train the adaptive knowledge sys- tem that (a) stores model currently used in the tightly-integrated EKF is based on double

A mini unmanned aerial vehicle (UAV): system overview and image acquisition
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operation with WITAS –Wallenberg Laboratory for research on Information Technology and AutonomousSystems (Linköping University System Equipment Applications (size and structure) GPS/INS Laser Camera Large areas Small areas Aircraft yes yes Film based and Digital

Architectures of gnss/ins integrations: Theoretical approach and practical tests
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According to its measurement principle INS systems provide an autonomous solution for position, velocity 200318 200443 200568 200693 200818 GPS-Lösung GPS/INS-Lösung Based on computed railhead positions the geometric line characteristics of the investigated track

Development and evaluation of a combined WLAN inertial indoor pedestrian positioning system
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navigation indoors, we believe a successful approach will need to be as autonomous as possible Location Fingerprinting requires time to train, and re- sults can be dependant on the time of 3] V. Zarimpas, B. Honary, and M. Darnell, In- door 802.1x based location determination


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