Geomatics Technology
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UCGE Reports Ionosphere Weighted Global Positioning System Carrier
UCGE Reports Number 20155 Ionosphere Weighted Global Positioning System Carrier Phase Ambiguity Resolution (URL: http://www.geomatics.ucalgary.ca/links/GradTheses.html) Department of Geomatics Engineering By George Chia Liu December 2001 Calgary, Alberta, Canada THE UNIVERSITY OF CALGARY IONOSPHERE WEIGHTED GLOBAL POSITIONING SYSTEM CARRIER PHASE AMBIGUITY RESOLUTION by GEORGE CHIA LIU A THESIS SUBMITTED TO THE FACULTY OF GRADUATE STUDIES IN PARTIAL FULFILLMENT OF THE REQUIREMENTS FOR THE DEGREE OF MASTER OF SCIENCE DEPARTMENT OF GEOMATICS ENGINEERING CALGARY, ALBERTA OCTOBER, 2001 c GEORGE CHIA LIU 2001 Abstract Integer Ambiguity constraint is essential in precise GPS positioning. The perfor- mance and reliability of the ambiguity resolution process are being hampered by the current culmination (Y2000) of the eleven-year solar cycle. The traditional approach to mitigate the high ionospheric effect has been either to reduce the inter-station separation or to form ionosphere-free observables. Neither is satisfactory: the first restricts the operating range, and the second no longer possesses the ”integerness” of the ambiguities. A third generalized approach is introduced herein, whereby the zero ionosphere weight constraint, or pseudo-observables, with an appropriate weight is added to the Kalman Filter algorithm. The weight can be tightly fixed yielding the model equivalence of an independent L1/L2 dual-band model. At the other extreme, an infinite floated weight gives the equivalence of an ionosphere-free model, yet perserves the ambiguity integerness. A stochastically tuned, or weighted, model provides a compromise between the two ex- tremes. The reliability of ambiguity estimates relies on many factors, including an accurate functional model, a realistic stochastic model, and a subsequent efficient integer search algorithm. -
Geomatics Guidance Note 3
Geomatics Guidance Note 3 Contract area description Revision history Version Date Amendments 5.1 December 2014 Revised to improve clarity. Heading changed to ‘Geomatics’. 4 April 2006 References to EPSG updated. 3 April 2002 Revised to conform to ISO19111 terminology. 2 November 1997 1 November 1995 First issued. 1. Introduction Contract Areas and Licence Block Boundaries have often been inadequately described by both licensing authorities and licence operators. Overlaps of and unlicensed slivers between adjacent licences may then occur. This has caused problems between operators and between licence authorities and operators at both the acquisition and the development phases of projects. This Guidance Note sets out a procedure for describing boundaries which, if followed for new contract areas world-wide, will alleviate the problems. This Guidance Note is intended to be useful to three specific groups: 1. Exploration managers and lawyers in hydrocarbon exploration companies who negotiate for licence acreage but who may have limited geodetic awareness 2. Geomatics professionals in hydrocarbon exploration and development companies, for whom the guidelines may serve as a useful summary of accepted best practice 3. Licensing authorities. The guidance is intended to apply to both onshore and offshore areas. This Guidance Note does not attempt to cover every aspect of licence boundary definition. In the interests of producing a concise document that may be as easily understood by the layman as well as the specialist, definitions which are adequate for most licences have been covered. Complex licence boundaries especially those following river features need specialist advice from both the survey and the legal professions and are beyond the scope of this Guidance Note. -
PRINCIPLES and PRACTICES of GEOMATICS BE 3200 COURSE SYLLABUS Fall 2015
PRINCIPLES AND PRACTICES OF GEOMATICS BE 3200 COURSE SYLLABUS Fall 2015 Meeting times: Lecture class meets promptly at 10:10-11:00 AM Mon/Wed in438 Brackett Hall and lab meets promptly at 12:30-3:20 PM Wed at designated sites Course Basics Geomatics encompass the disciplines of surveying, mapping, remote sensing, and geographic information systems. It’s a relatively new term used to describe the science and technology of dealing with earth measurement data that includes collection, sorting, management, planning and design, storage, and presentation of the data. In this class, geomatics is defined as being an integrated approach to the measurement, analysis, management, storage, and presentation of the descriptions and locations of spatial data. Goal: Designed as a "first course" in the principles of geomeasurement including leveling for earthwork, linear and area measurements (traversing), mapping, and GPS/GIS. Description: Basic surveying measurements and computations for engineering project control, mapping, and construction layout. Leveling, earthwork, area, and topographic measurements using levels, total stations, and GPS. Application of Mapping via GIS. 2 CT2: This course is a CT seminar in which you will not only study the course material but also develop your critical thinking skills. Prerequisite: MTHSC 106: Calculus of One Variable I. Textbook: Kavanagh, B. F. Surveying: Principles and Applications. Prentice Hall. 2010. Lab Notes: Purchase Lab notes at Campus Copy Shop [REQUIRED]. Materials: Textbook, Lab Notes (must be brought to lab), Field Book, 3H/4H Pencil, Small Scale, and Scientific Calculator. Attendance: Regular and punctual attendance at all classes and field work is the responsibility of each student. -
Roman Large-Scale Mapping in the Early Empire
13 · Roman Large-Scale Mapping in the Early Empire o. A. w. DILKE We have already emphasized that in the period of the A further stimulus to large-scale surveying and map early empire1 the Greek contribution to the theory and ping practice in the early empire was given by the land practice of small-scale mapping, culminating in the work reforms undertaken by the Flavians. In particular, a new of Ptolemy, largely overshadowed that of Rome. A dif outlook both on administration and on cartography ferent view must be taken of the history of large-scale came with the accession of Vespasian (T. Flavius Ves mapping. Here we can trace an analogous culmination pasianus, emperor A.D. 69-79). Born in the hilly country of the Roman bent for practical cartography. The foun north of Reate (Rieti), a man of varied and successful dations for a land surveying profession, as already noted, military experience, including the conquest of southern had been laid in the reign of Augustus. Its expansion Britain, he overcame his rivals in the fierce civil wars of had been occasioned by the vast program of colonization A.D. 69. The treasury had been depleted under Nero, carried out by the triumvirs and then by Augustus him and Vespasian was anxious to build up its assets. Fron self after the civil wars. Hyginus Gromaticus, author of tinus, who was a prominent senator throughout the Fla a surveying treatise in the Corpus Agrimensorum, tells vian period (A.D. 69-96), stresses the enrichment of the us that Augustus ordered that the coordinates of surveys treasury by selling to colonies lands known as subseciva. -
Geodetic Position Computations
GEODETIC POSITION COMPUTATIONS E. J. KRAKIWSKY D. B. THOMSON February 1974 TECHNICALLECTURE NOTES REPORT NO.NO. 21739 PREFACE In order to make our extensive series of lecture notes more readily available, we have scanned the old master copies and produced electronic versions in Portable Document Format. The quality of the images varies depending on the quality of the originals. The images have not been converted to searchable text. GEODETIC POSITION COMPUTATIONS E.J. Krakiwsky D.B. Thomson Department of Geodesy and Geomatics Engineering University of New Brunswick P.O. Box 4400 Fredericton. N .B. Canada E3B5A3 February 197 4 Latest Reprinting December 1995 PREFACE The purpose of these notes is to give the theory and use of some methods of computing the geodetic positions of points on a reference ellipsoid and on the terrain. Justification for the first three sections o{ these lecture notes, which are concerned with the classical problem of "cCDputation of geodetic positions on the surface of an ellipsoid" is not easy to come by. It can onl.y be stated that the attempt has been to produce a self contained package , cont8.i.ning the complete development of same representative methods that exist in the literature. The last section is an introduction to three dimensional computation methods , and is offered as an alternative to the classical approach. Several problems, and their respective solutions, are presented. The approach t~en herein is to perform complete derivations, thus stqing awrq f'rcm the practice of giving a list of for11111lae to use in the solution of' a problem. -
Download the Surveying and Mapping Minor Form
The Ohio State University College of Engineering Department of Civil, Environmental and Geodetic Engineering Surveying and Mapping Minor (SURVMAP-MN) Department of Civil, Environmental and Geodetic Engineering Details for the required minor courses are listed below. Many 470 Hitchcock Hall, 2070 Neil Avenue Columbus, OH 43210 of the courses are only offered once per year. http://ceg.ohio-state.edu Surveying and Mapping Minor Program Guidelines Surveying is a crucial part of land development. Professional Surveyors must have a Bachelor of Science in Civil Required for graduation: No Engineering or Surveying and Mapping, and often work Credit hours required: A minimum of 19 credit hours is closely with architects and builders to produce precise required to complete the Surveying and Mapping minor. surveys and maps of surface features of the earth. Surveyors Transfer and EM credit hours allowed: No more than 6 (six) of can choose from many specialties and get involved at many the credit hours required for the minor can come from stages of a project. Students who pursue a Surveying and transfer or EM credit. Mapping minor will gain an understanding of global Overlap with the major: positioning; analyzing spatial data; digital map production • The minor must be in a different subject that the major and electronic data collection; survey software applications, • The minor must contain a minimum of 12 hours boundary surveying and construction layout techniques. distinct from the major and/or additional Students interested in pursuing a career in professional land minor(s). surveying should consider completing the Surveying and Civil Engineering Majors: The following courses will count as Mapping minor. -
The History of Cartography, Volume Six: Cartography in the Twentieth Century
The AAG Review of Books ISSN: (Print) 2325-548X (Online) Journal homepage: http://www.tandfonline.com/loi/rrob20 The History of Cartography, Volume Six: Cartography in the Twentieth Century Jörn Seemann To cite this article: Jörn Seemann (2016) The History of Cartography, Volume Six: Cartography in the Twentieth Century, The AAG Review of Books, 4:3, 159-161, DOI: 10.1080/2325548X.2016.1187504 To link to this article: https://doi.org/10.1080/2325548X.2016.1187504 Published online: 07 Jul 2016. Submit your article to this journal Article views: 312 View related articles View Crossmark data Full Terms & Conditions of access and use can be found at http://www.tandfonline.com/action/journalInformation?journalCode=rrob20 The AAG Review OF BOOKS The History of Cartography, Volume Six: Cartography in the Twentieth Century Mark Monmonier, ed. Chicago, document how all cultures of all his- IL: University of Chicago Press, torical periods represented the world 2015. 1,960 pp., set of 2 using maps” (Woodward 2001, 28). volumes, 805 color plates, What started as a chat on a relaxed 119 halftones, 242 line drawings, walk by these two authors in Devon, England, in May 1977 developed into 61 tables. $500.00 cloth (ISBN a monumental historia cartographica, 978-0-226-53469-5). a cartographic counterpart of Hum- boldt’s Kosmos. The project has not Reviewed by Jörn Seemann, been finished yet, as the volumes on Department of Geography, Ball the eighteenth and nineteenth cen- State University, Muncie, IN. tury are still in preparation, and will probably need a few more years to be published. -
Ordnance Survey and the Depiction of Antiquities on Maps: Past, Present and Future
View metadata, citation and similar papers at core.ac.uk brought to you by CORE provided by Publikationsserver der Universität Tübingen Ordnance Survey and the Depiction of Antiquities on Maps: Past, Present and Future. The Current and Future Role of the Royal Commissions as CAA97 Suppliers of Heritage Data to the Ordnance Survey Diana Murray Abstract The background and history of the mapping of archaeological sites is described, followed by an account of the method used to transfer information on 'antiquities' to the Ordnance Survey today. The impact of digitisation on the appearance of archaeology on OS maps has been of concern but the use of digital technology by the Royal Commissions, in particular GIS, opens up many opportunities for future mapping of the archaeological landscape. 1 Background Society, having had its attenticxi recently directed to the fact that many of the primitive moiuments of our natiaial history, partly From the earliest stages of the develcpment of modem mapping, from the progress of agricultural improvements, and in part 'antiquities' have been depicted as integral and important visual from neglect and spoilation, were in the course of being elements of the landscape. Antiquities appear on maps as early removed, was of the opini<xi, that it would be of great as the 17th century but it was oily when, in the mid-18th consequence to have all such historical monuments laid down century the systematic mapping of Scotland was undertaken for cm the Ordnance Survey of Scotland in the course of military purposes in response to the 1745 rebelliai, that preparation'. -
Determination of GPS Session Duration in Ground Deformation Surveys in Mining Areas
sustainability Article Determination of GPS Session Duration in Ground Deformation Surveys in Mining Areas Maciej Bazanowski 1, Anna Szostak-Chrzanowski 2,* and Adam Chrzanowski 1 1 Department of Geodesy and Geomatics Engineering, University of New Brunswick, P.O. Box 4400, Fredericton, N.B., E3B 5A3, N.B., Canada; [email protected] (M.B.); [email protected] (A.C.) 2 Faculty of Geoengineering, Mining and Geology, Wrocław University of Science and Technology„ul. Na Grobli 15, 50-421Wrocław, Poland * Correspondence: [email protected] Received: 18 September 2019; Accepted: 25 October 2019; Published: 3 November 2019 Abstract: Extraction of underground minerals causes subsidence of the ground surface due to gravitational forces. The subsidence rate depends on the type of extracted ore, as well as its shape, thickness, and depth. Additionally, the embedding and overburden rock properties influence the time needed for the deformations to reach the surface. Using the results of geodetic deformation monitoring, which supply the information on pattern and magnitude of surface deformation, the performance of the mine may be evaluated. The monitoring can supply information on the actual rock mass behaviour during the operation and in many cases during the years after the mining operations have ceased. Geodetic methods of deformation monitoring supply information on the absolute and relative displacements (changes in position in a selected coordinate system) from which displacement and strain fields for the monitored object may be derived. Thus, geodetic measurements provide global information on absolute and relative displacements over large areas, either at discrete points or continuous in the space domain. The geodetic methods are affected by errors caused by atmospheric refraction and delay of electromagnetic signal. -
Coordinate Systems in Geodesy
COORDINATE SYSTEMS IN GEODESY E. J. KRAKIWSKY D. E. WELLS May 1971 TECHNICALLECTURE NOTES REPORT NO.NO. 21716 COORDINATE SYSTElVIS IN GEODESY E.J. Krakiwsky D.E. \Vells Department of Geodesy and Geomatics Engineering University of New Brunswick P.O. Box 4400 Fredericton, N .B. Canada E3B 5A3 May 1971 Latest Reprinting January 1998 PREFACE In order to make our extensive series of lecture notes more readily available, we have scanned the old master copies and produced electronic versions in Portable Document Format. The quality of the images varies depending on the quality of the originals. The images have not been converted to searchable text. TABLE OF CONTENTS page LIST OF ILLUSTRATIONS iv LIST OF TABLES . vi l. INTRODUCTION l 1.1 Poles~ Planes and -~es 4 1.2 Universal and Sidereal Time 6 1.3 Coordinate Systems in Geodesy . 7 2. TERRESTRIAL COORDINATE SYSTEMS 9 2.1 Terrestrial Geocentric Systems • . 9 2.1.1 Polar Motion and Irregular Rotation of the Earth • . • • . • • • • . 10 2.1.2 Average and Instantaneous Terrestrial Systems • 12 2.1. 3 Geodetic Systems • • • • • • • • • • . 1 17 2.2 Relationship between Cartesian and Curvilinear Coordinates • • • • • • • . • • 19 2.2.1 Cartesian and Curvilinear Coordinates of a Point on the Reference Ellipsoid • • • • • 19 2.2.2 The Position Vector in Terms of the Geodetic Latitude • • • • • • • • • • • • • • • • • • • 22 2.2.3 Th~ Position Vector in Terms of the Geocentric and Reduced Latitudes . • • • • • • • • • • • 27 2.2.4 Relationships between Geodetic, Geocentric and Reduced Latitudes • . • • • • • • • • • • 28 2.2.5 The Position Vector of a Point Above the Reference Ellipsoid . • • . • • • • • • . .• 28 2.2.6 Transformation from Average Terrestrial Cartesian to Geodetic Coordinates • 31 2.3 Geodetic Datums 33 2.3.1 Datum Position Parameters . -
The Economic Contribution of Ordnance Survey Gb
Final report ORDNANCE SURVEY THE ECONOMIC CONTRIBUTION OF ORDNANCE SURVEY GB Public version SEPTEMBER 24th 1999 Original report published May 14th 1999 OXERA Oxford Economic Research Associates Ltd is registered in England, no. 1613053. Registered office: Blue Boar Court, Alfred Street, Oxford OX1 4EH, UK. Although every effort has been made to ensure the accuracy of the material and the integrity of the analysis presented herein, Oxford Economic Research Associates Ltd accepts no liability for any actions taken on the basis of its contents. Oxford Economic Research Associates Ltd is not licensed in the conduct of investment business as defined in the Financial Services Act 1986. Anyone considering a specific investment should consult their own broker or other investment adviser. Oxford Economic Research Associates Ltd accepts no liability for any specific investment decision which must be at the investor’s own risk. |O|X|E|R|A| Final report Executive Summary Ordnance Survey(OS) has been mapping Great Britain since 1791. In its role as the national mapping agency, OS produces a range of products and services, including a base dataset, which are driven by the needs of the national interest and the demands of customers. As a primary producer, OS makes a significant contribution to the national economy. This economic contribution is assessed in this report by examining the impact of OS as a purchaser of raw materials from suppliers, as a producer of final goods and services, and as a producer of intermediate goods and services which are used in a variety of sectors. The contribution of OS to distributors and to competitors is also considered. -
The History of Geodesy Told Through Maps
The History of Geodesy Told through Maps Prof. Dr. Rahmi Nurhan Çelik & Prof. Dr. Erol KÖKTÜRK 16 th May 2015 Sofia Missionaries in 5000 years With all due respect... 3rd FIG Young Surveyors European Meeting 1 SUMMARIZED CHRONOLOGY 3000 BC : While settling, people were needed who understand geometries for building villages and dividing lands into parts. It is known that Egyptian, Assyrian, Babylonian were realized such surveying techniques. 1700 BC : After floating of Nile river, land surveying were realized to set back to lost fields’ boundaries. (32 cm wide and 5.36 m long first text book “Papyrus Rhind” explain the geometric shapes like circle, triangle, trapezoids, etc. 550+ BC : Thereafter Greeks took important role in surveying. Names in that period are well known by almost everybody in the world. Pythagoras (570–495 BC), Plato (428– 348 BC), Aristotle (384-322 BC), Eratosthenes (275–194 BC), Ptolemy (83–161 BC) 500 BC : Pythagoras thought and proposed that earth is not like a disk, it is round as a sphere 450 BC : Herodotus (484-425 BC), make a World map 350 BC : Aristotle prove Pythagoras’s thesis. 230 BC : Eratosthenes, made a survey in Egypt using sun’s angle of elevation in Alexandria and Syene (now Aswan) in order to calculate Earth circumferences. As a result of that survey he calculated the Earth circumferences about 46.000 km Moreover he also make the map of known World, c. 194 BC. 3rd FIG Young Surveyors European Meeting 2 150 : Ptolemy (AD 90-168) argued that the earth was the center of the universe.