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Position Errors Caused by GPS Height of Instrument Blunders Thomas H
University of Connecticut OpenCommons@UConn Department of Natural Resources and the Thomas H. Meyer's Peer-reviewed Articles Environment July 2005 Position Errors Caused by GPS Height of Instrument Blunders Thomas H. Meyer University of Connecticut, [email protected] April Hiscox University of Connecticut Follow this and additional works at: https://opencommons.uconn.edu/thmeyer_articles Recommended Citation Meyer, Thomas H. and Hiscox, April, "Position Errors Caused by GPS Height of Instrument Blunders" (2005). Thomas H. Meyer's Peer-reviewed Articles. 4. https://opencommons.uconn.edu/thmeyer_articles/4 Survey Review, 38, 298 (October 2005) SURVEY REVIEW No.298 October 2005 Vol.38 CONTENTS (part) Position errors caused by GPS height of instrument blunders 262 T H Meyer and A L Hiscox This paper was published in the October 2005 issue of the UK journal, SURVEY REVIEW. This document is the copyright of CASLE. Requests to make copies should be made to the Editor, see www.surveyreview.org for contact details. The Commonwealth Association of Surveying and Land Economy does not necessarily endorse any opinions or recommendations made in an article, review, or extract contained in this Review nor do they necessarily represent CASLE policy CASLE 2005 261 Survey Review, 38, 298 (October 2005 POSITION ERRORS CAUSED BY GPS HEIGHT OF INSTRUMENT BLUNDERS POSITION ERRORS CAUSED BY GPS HEIGHT OF INSTRUMENT BLUNDERS T. H. Meyer and A. L. Hiscox Department of Natural Resources Management and Engineering University of Connecticut ABSTRACT Height of instrument (HI) blunders in GPS measurements cause position errors. These errors can be pure vertical, pure horizontal, or a mixture of both. -
DOTD Standards for GPS Data Collection Accuracy
Louisiana Transportation Research Center Final Report 539 DOTD Standards for GPS Data Collection Accuracy by Joshua D. Kent Clifford Mugnier J. Anthony Cavell Larry Dunaway Louisiana State University 4101 Gourrier Avenue | Baton Rouge, Louisiana 70808 (225) 767-9131 | (225) 767-9108 fax | www.ltrc.lsu.edu TECHNICAL STANDARD PAGE 1. Report No. 2. Government Accession No. 3. Recipient's Catalog No. FHWA/LA.539 4. Title and Subtitle 5. Report Date DOTD Standards for GPS Data Collection Accuracy September 2015 6. Performing Organization Code 127-15-4158 7. Author(s) 8. Performing Organization Report No. Kent, J. D., Mugnier, C., Cavell, J. A., & Dunaway, L. Louisiana State University Center for GeoInformatics 9. Performing Organization Name and Address 10. Work Unit No. Center for Geoinformatics Department of Civil and Environmental Engineering 11. Contract or Grant No. Louisiana State University LTRC Project Number: 13-6GT Baton Rouge, LA 70803 State Project Number: 30001520 12. Sponsoring Agency Name and Address 13. Type of Report and Period Covered Louisiana Department of Transportation and Final Report Development 6/30/2014 P.O. Box 94245 Baton Rouge, LA 70804-9245 14. Sponsoring Agency Code 15. Supplementary Notes Conducted in Cooperation with the U.S. Department of Transportation, Federal Highway Administration 16. Abstract The Center for GeoInformatics at Louisiana State University conducted a three-part study addressing accurate, precise, and consistent positional control for the Louisiana Department of Transportation and Development. First, this study focused on Departmental standards of practice when utilizing Global Navigational Satellite Systems technology for mapping-grade applications. Second, the recent enhancements to the nationwide horizontal and vertical spatial reference framework (i.e., datums) is summarized in order to support consistent and accurate access to the National Spatial Reference System. -
What Are Geodetic Survey Markers?
Part I Introduction to Geodetic Survey Markers, and the NGS / USPS Recovery Program Stf/C Greg Shay, JN-ACN United States Power Squadrons / America’s Boating Club Sponsor: USPS Cooperative Charting Committee Revision 5 - 2020 Part I - Topics Outline 1. USPS Geodetic Marker Program 2. What are Geodetic Markers 3. Marker Recovery & Reporting Steps 4. Coast Survey, NGS, and NOAA 5. Geodetic Datums & Control Types 6. How did Markers get Placed 7. Surveying Methods Used 8. The National Spatial Reference System 9. CORS Modernization Program Do you enjoy - Finding lost treasure? - the excitement of the hunt? - performing a valuable public service? - participating in friendly competition? - or just doing a really fun off-water activity? If yes , then participation in the USPS Geodetic Marker Recovery Program may be just the thing for you! The USPS Triangle and Civic Service Activities USPS Cooperative Charting / Geodetic Programs The Cooperative Charting Program (Nautical) and the Geodetic Marker Recovery Program (Land Based) are administered by the USPS Cooperative Charting Committee. USPS Cooperative Charting / Geodetic Program An agreement first executed between USPS and NOAA in 1963 The USPS Geodetic Program is a separate program from Nautical and was/is not part of the former Cooperative Charting agreement with NOAA. What are Geodetic Survey Markers? Geodetic markers are highly accurate surveying reference points established on the surface of the earth by local, state, and national agencies – mainly by the National Geodetic Survey (NGS). NGS maintains a database of all markers meeting certain criteria. Common Synonyms Mark for “Survey Marker” Marker Marker Station Note: the words “Geodetic”, Benchmark* “Survey” or Station “Geodetic Survey” Station Mark may precede each synonym. -
Towards Future SI Measurement Standards
European Metrology Research Programme Towards future SI measurement standards A summary of the outputs and impact of the completed EMRP joint research projects in the SI Broader Scope theme and also projects from the Open Excellence theme. The aim of research in these themes is to develop the International System of measurement – the SI – to meet the future measurement needs of industry and society. The research is focused on the SI units for temperature, mass, electric current and time, and on technologies required by users for its implementation. EURAMET e.V. - the European Association of National Metrology Institutes Measurement matters Measurement underpins virtually every aspect of our daily lives, helping to ensure quality and safety, supporting technological innovation and keeping our economy competitive. Supported by the European Commission, EURAMET’s European Metrology Research Programme (EMRP) brings together National Measurement Institutes in 23 countries to pool scientific and financial resources to address key measurement challenges at a European level. The programme is designed to ensure that measurement science meets the future needs of industry and wider society. Research is structured around six themes – Energy, Environment, Health and Industry – as well as the measurement needs of emerging technologies and the fundamentals of the SI measurement units that form the basis of Europe’s measurement infrastructure. Contents Introduction: SI Broader Scope ............................................................................................................................................ -
Understanding Coordinate Systems and Map Projections (Pdf)
UNDERSTANDING COORDINATE SYSTEMS AND MAP PROJECTIONS PhD Evelyn Uuemaa The lecture is largely based on FOSS4G Academy Curriculum materials licensed under the Creative Commons Attribution 3.0 Unported License LEARNING OUTCOMES • Define the terms: • PCS • GCS • Projection method • Select the appropriate projection system based on a region of interest • Correctly project data sets to a new spatial reference system when needed. • Demonstrate an understanding that no matter how we project spherical data (3D) onto a plane (2D), there will be distortion. WHY DO YOU NEED TO KNOW THIS? • Spatial data – related to certain location • Globes are great for visualisation purposes, they are not practical for many uses, one reason being that they are not very portable • A round Earth does not fit without distortion on a flat piece of paper SPATIAL REFERENCE SYSTEM (SRS) OR COORDINATE REFERENCE SYSTEM (CRS) • Spatial Reference Systems, also referred to as Coordinate Systems, include two common types: Geographic Coordinate Sytems (GCS) Projected Coordinate Systems (PCS) • A Spatial Reference System Identifier (SRID) is a unique value used to unambiguously identify projected, unprojected, and local spatial coordinate system definitions. These coordinate systems form the heart of all GIS applications. (wiki) SPATIAL REFERENCE SYSTEM IDENTIFIER (SRID) • Virtually all major spatial vendors have created their own SRID implementation or refer to those of an authority, such as the European Petroleum Survey Group (EPSG). • SRIDs are the primary key for the Open Geospatial Consortium (OGC) spatial_ref_sys metadata table for the Simple Features for SQL Specification. • In spatially enabled databases (such as MySQL, PostGIS), SRIDs are used to uniquely identify the coordinate systems used to define columns of spatial data or individual spatial objects in a spatial column. -
IR 473 Selecting the Correct Datum, Coordinate System and Projection
internal RUQ report q22eqh22qheX eleting2the2orret dtumD2 oordinte system2nd2projetion for2north2eustrlin pplitions tfg2vowry perury2 PHHR WGS – AGD – GDA: Selecting the correct datum, coordinate system and projection for north Australian applications JBC Lowry Hydrological and Ecological Processes Program Environmental Research Institute of the Supervising Scientist GPO Box 461, Darwin NT 0801 February 2004 Registry File SG2001/0172 Contents Preface v Quick reference / Frequently Asked Questions vi What is a datum vi What is a projection vi What is a coordinate system vi What datum is used in Kakadu / Darwin / Northern Australia? vi What is WGS84 vi What do AGD, AMG, GDA and MGA stand for? vi Introduction 1 Projections , Datums and Coordinate Systems in Australia 1 Key differences between AGD / GDA 3 MetaData 6 Summary and Recommendations 7 References (and suggested reading) 8 Appendix 1 – Background to projections, datums and coordinate systems 10 Geodesy 10 Coordinate systems 11 Geographic Coordinate systems 11 Spheroids and datums 13 Geocentric datums 13 Local datums 13 Projected Coordinate systems 14 What is a map projection? 15 Example of map projection – UTM 19 Appendix 2 : Background information on the Australia Geodetic Datum and the Geocentric Datum 21 AGD 21 GDA 21 iii iv Preface The Supervising Scientist Division (SSD) undertakes a diverse range of activities for which the use, collection and maintenance of spatial data is an integral activity. These activities range from recording sample site locations with a global positioning system (GPS), through to the compilation and analysis of spatial datasets in a geographic information system (GIS), and the use of remotely sensed data, to simply reading a map. -
Swath-Bathymetric-Mapping-2006
Swath-bathymetric mapping Steffen Gauger, Gerhard Kuhn, Thomas Feigl, Polina Lemenkova To cite this version: Steffen Gauger, Gerhard Kuhn, Thomas Feigl, Polina Lemenkova. Swath-bathymetric mapping. Ex- pedition ANTARKTIS-XXIII/4 of the research vessel ”Polarstern” in 2006, The Alfred Wegener In- stitute, Helmholtz Centre for Polar and Marine Research is located in Bremerhaven, Germany, 2007, Berichte zur Polar- und Meeresforschung = Reports on Polar and Marine Research, 557, pp.38-45. hal-02022076 HAL Id: hal-02022076 https://hal.archives-ouvertes.fr/hal-02022076 Submitted on 17 Feb 2019 HAL is a multi-disciplinary open access L’archive ouverte pluridisciplinaire HAL, est archive for the deposit and dissemination of sci- destinée au dépôt et à la diffusion de documents entific research documents, whether they are pub- scientifiques de niveau recherche, publiés ou non, lished or not. The documents may come from émanant des établissements d’enseignement et de teaching and research institutions in France or recherche français ou étrangers, des laboratoires abroad, or from public or private research centers. publics ou privés. Distributed under a Creative Commons CC0 - Public Domain Dedication| 4.0 International License XX. SWATH-BATHYMETRIC MAPPING (S. Gauger, G. Kuhn, T. Feigl, P. Lemenkova) Objectives The main objective of the bathymetric working group was to perform high resolution multibeam surveys during the entire cruise for geomorphological interpretation, to locate geological sampling sites, to interpret magnetic and gravimetric measurements and to expand the world database for oceanic mapping. Precise depth measurements are the basis for creating high resolution models of the sea surface. The morphology of the seabed, interpreted from bathymetric models, gives information about the geological processes on the earth surface. -
The Nexus Between Human Rights and Democracy
E-PAPER A Companion to Democracy #1 To be Equal and Free: The Nexus Between Human Rights and Democracy THANDIWE MATTHEWS A Publication of Heinrich Böll Foundation, December 2019 Preface to the E-Paper Series “A Companion to Democracy” Democracy is a fluid, ever evolving and adaptable concept. It is influenced by historical and social context, geopolitical characteristics of a country, its neighbors, allies and adversaries, the political climate, local and global trends. The e-papers series “A Companion to Democracy” examine the phenomena and concepts closely related to democracy and democratization – those which have both a positive and a negative influence upon it. Some, like autocratization, corruption, the loss of legitimacy for democratic institutions and parties, curtailing civic participation or the uncontrolled proliferation of misleading information can rock democracy to its core. Others like human rights, active civil society engagement and accountability strengthen its foundations and develop alongside it. Our e-paper series delves into the most recent global trends and debates regarding democracy and its interactions with society, politics, rights and freedom. To be Equal and Free: The Nexus Between Human Rights and Democracy 2/ 29 To be Equal and Free: The Nexus Between Human Rights and Democracy Thandiwe Matthews 3 Contents Introduction 4 The ambiguous relationship between democracy and human rights 6 The evolution of the international human rights system: achievements and shortcomings 9 The erosion of human rights and its -
Standards and Units: a View from the President of the Royal Society of New South Wales
Journal & Proceedings of the Royal Society of New South Wales, vol. 150, part 2, 2017, pp. 143–151. ISSN 0035-9173/17/020143-09 Standards and units: a view from the President of the Royal Society of New South Wales D. Brynn Hibbert The Royal Society of New South Wales, UNSW Sydney, and The International Union of Pure and Applied Chemistry Email: [email protected] Abstract As the Royal Society of New South Wales continues to grow in numbers and influence, the retiring president reflects on the achievements of the Society in the 21st century and describes the impending changes in the International System of Units. Scientific debates that have far reaching social effects should be the province of an Enlightenment society such as the RSNSW. Introduction solved by science alone. Our own Society t may be a long bow, but the changes in embraces “science literature philosophy and Ithe definitions of units used across the art” and we see with increasing clarity that world that have been decades in the making, our business often spans all these fields. As might have resonances in the resurgence in we shall learn the choice of units with which the fortunes of the RSNSW in the 21st cen- to measure our world is driven by science, tury. First, we have a system of units tracing philosophy, history and a large measure of back to the nineteenth century that starts social acceptability, not to mention the occa- with little traction in the world but eventu- sional forearm of a Pharaoh. ally becomes the bedrock of science, trade, Measurement health, indeed any measurement-based activ- ity. -
Analysis of an Optical Lattice Methodology for Detection of Atomic Parity Nonconservation
S S symmetry Article Analysis of an Optical Lattice Methodology for Detection of Atomic Parity Nonconservation 1, ,† 2,† 3,† 4,† Anders Kastberg ∗ , Bijaya Kumar Sahoo , Takatoshi Aoki , Yasuhiro Sakemi and Bhanu Pratap Das 5,† 1 Institute de Physique de Nice, Université Côte d’Azur, CNRS, 06108 Nice, France 2 Atomic, Molecular and Optical Physics Division, Physical Research Laboratory, Navrangpura, Ahmedabad 380009, India; [email protected] 3 Institute of Physics, Graduate School of Arts and Sciences, The University of Tokyo, Tokyo 153-8902, Japan; [email protected] 4 Center for Nuclear Study, The University of Tokyo, Wako 351-0198, Japan; [email protected] 5 International Education and Research Center of Science and Department of Physics, Tokyo Institute of Technology, Tokyo 152-8550, Japan; [email protected] * Correspondence: [email protected] † These authors contributed equally to this work. Received: 9 May 2020; Accepted: 30 May 2020; Published: 8 June 2020 Abstract: We present an extension and a deepened analysis of a suggested experimental scheme for detecting atomic parity violation, previously published in Phys. Rev. A 2019, 100, 050101. The experimental concept is described in more detail and we compute new ab initio data necessary for assessing the plausibility of the approach. Original theoretical data for transition matrix elements 2 2 on the electric dipole forbidden transition in caesium 6s S1/2–5d D3/2 are reported, as are a range of electric dipole matrix elements connected to the ground state 6s. The latter is used for an analysis of the wavelength-dependent light shift in Cs. -
A General Introduction on Metrology and Traceability
A general introduction on metrology and traceability Paul Brewer LNG metrology workshop 15th June 2016 National Physical Laboratory • Develop and disseminate UK’s measurement standards, ensure international acceptance • Knowledge transfer and advice between industry, government and academia • Support Industry, trade, regulation, legislation, quality of life, science and innovation industrial environment energy Gas and Particle particles Metrology The Fundamentals of Metrology • What is metrology and what is it for? • What is an NMI and what is it for? • What is the mole and what is it for? What is ‘Metrology’? . Metrology is “the science of measurement, embracing both experimental and theoretical determinations at any level of uncertainty in any field of science and technology.” . Almost all of science and industry involves making and interpreting measurement – why is metrology special? The Proclamation Regarding Weights and Measures, 1556 by Ford Madox Brown (1889) The electrochemical characteristics of platinum phthalocyanine . Quantitative conclusions inferred; but what was the accuracy, repeatability, reproducibility and uncertainty of these measurements? . Would this have affected the conclusions? Metrology’s main activities . The definition of internationally accepted units of measurement, e.g. the kilogram . The realisation of units of measurement by scientific methods . The establishment of (metrological) traceability chains by disseminating and documenting the value and accuracy of a measurement . Traceability implies the calculation of an associated measurement uncertainty . These activities may be fundamental (scientific) or applied (practical, industrial, legal) International vocabulary of metrology The Results of Metrology . Generates systems and frameworks for quantification and through these underpins consistency and assurance in all measurement . Gives a quantified level of confidence in the measurement through an uncertainty statement . -
Dynamics of Rydberg Atom Lattices in the Presence of Noise and Dissipation
Dynamics of Rydberg atom lattices in the presence of noise and dissipation D zur Erlangung des akademischen Grades Doctor rerum naturalium (Dr. rer. nat.) vorgelegt der Fakultät Mathematik und Naturwissenschaften der Technischen Universität Dresden von Wildan Abdussalam M.Sc. Eingereicht am 19.1.2017 Verteidigt am 07.08.2017 Eingereicht am 19.1.2017 Verteidigt am 07.08.2017 1. Gutachter: Prof. Dr. Jan Michael Rost 2. Gutachter: Prof. Dr. Walter Strunz To my family and teachers Abstract The work presented in this dissertation concerns dynamics of Rydberg atom lattices in the presence of noise and dissipation. Rydberg atoms possess a number of exaggerated properties, such as a strong van der Waals interaction. The interplay of that interaction, coherent driving and decoherence leads to intriguing non-equilibrium phenomena. Here, we study the non-equilibrium physics of driven atom lattices in the pres- ence of decoherence caused by either laser phase noise or strong decay. In the Vrst case, we compare between global and local noise and explore their eUect on the number of ex- citations and the full counting statistics. We Vnd that both types of noise give rise to a characteristic distribution of the Rydberg excitation number. The main method employed is the Langevin equation but for the sake of eXciency in certain regimes, we use a Marko- vian master equation and Monte Carlo rate equations, respectively. In the second case, we consider dissipative systems with more general power- law interactions. We determine the phase diagram in the steady state and analyse its generation dynamics using Monte Carlo rate equations.