Physical Sciences and Mathematics Commons^™

Factors That Affect The Global Positioning System And Global Navigation Satellite System In An Urban And Forested Environment., Douglas Allen Ritchie

Electronic Theses and Dissertations

The purpose of this study was to evaluate the accuracy in real time measurements acquired from GPS and GLONASS satellite observations using RTK techniques in an urban and forested environment. To determine this accuracy, 2 data sets of 3-dimensional coordinates were created and compared at 14 stations situated at East Tennessee State University. One data set included coordinates determined by conventional land survey methods; the second was solved by RTK GPS/GLONASS. Once the magnitude of any deviation in the coordinate positions was determined, the contributions to the accuracies from cycle slips, multipath, satellite availability, PDOP, and fixed or float solutions …

Overview: Exploring Earth System Science, Richard F. Yuretich, Stephen E. Schneider, Rob Snyder, Morton Sternheim

STEM Earth Central

Earth Science topics that can be used in other science teaching

Mapping, GPS, GIS applications, geology, water, environmental issues

Hands-on activities and relevant internet resources

Designing and conducting research project

Applications to teaching in the K12 classroom

Curriculum concept component

Optional extensions

Map The Campus With Gps, Richard Yuretich, Rob Snyder

STEM Earth Central

Objective: To use a Global Positioning System device to collect data in order to construct a campus map.

Note: These instructions are for a Garmin 72 GPS. Refer to the GPS Basics document, the manual, or an on-line manual at http://www.garmin.com/products/gps72/ for additional information

A Methodology For The Forensic Acquisition Of The Tomtom One Satellite Navigation System - A Research In Progress, Peter Hannay

Australian Digital Forensics Conference

The use of Satellite Navigation Systems (SNS) has become increasingly common in recent years. The wide scale adoption of this technology has the potential to provide a valuable resource in forensic investigations. The potential of this resource is based on the ability to retrieve historical location data from the device in question while maintaining forensic integrity. This paper presents a methodology to acquire forensc images of the TomTom One satellite navigation unit. This methodology aims to be comprehensive and straightforward, while maintaining forensic integrity of the original evidence. However, in consideration of the aforementioned methodology, ti should be noted that …

Seismic Constraints On Slow Slip Events Within The Cascadia Subduction Zone, Ana Cristina Aguiar

All Master's Theses

Reanalysis of geodetic GPS time series from the Cascadia subduction zone have revealed at least 30 resolvable slow slip events along the megathrust, ranging from northern California to southern British Columbia, since 1997. Many of the smaller and more recent events are barely resolvable with GPS, but stand out clearly as tremor sequences. Since tremor bursts lasting less than 10-seconds are often visible across multiple stations, they offer the highest resolution for studying moment release through time. To test the hypothesis that tremor and transient deformation are two manifestations of the same faulting process, and to quantify the relative contribution …

Kinematics Of The Nicaraguan Forearc From Gps Geodesy, Henry L. Turner, Peter Lafemina, Armando Saballos, Glen S. Mattioli, Pamela E. Jansma, Timothy H. Dixon

School of Geosciences Faculty and Staff Publications

Campaign GPS data from a network in the Nicaraguan forearc show a strong component of arc-parallel motion indicating northwest translation of a nearly rigid forearc sliver. Our measured mean velocity for forearc sites of 15.1 mm yr⁻¹ agrees well with the arc-parallel sliver motion predicted previously by DeMets (2001) derived from closure constraints on oblique convergence between the Cocos and Caribbean plates. The lack of a northeasterly oriented arc-normal component of motion in forearc velocities indicates that there are complexities involved beyond a simple interpretation of sliver motion being driven by oblique convergence. The forearc is reasonably well-fit by …