Systems for data processing, anaylsis and representation

Allam, Mosaad; Plunkett, Gordon

Bibliographic data

Monograph

Persistent identifier:: 1067490280

Title:: Systems for data processing, anaylsis and representation

Sub title:: ISPRS Commission II Symposium : June 6 - 10, Ottawa, Canada

Scope:: 1 Online-Ressource (XX, 530 Seiten)

Year of publication:: 1994

Place of publication:: Ottawa

Publisher of the original:: The Surveys, Mapping and Remote Sensing, Natural Resources Canada

Identifier (digital):: 1067490280

Illustration:: Illustrationen

Signature of the source:: ZS 312(30,2)

Language:: English

Additional Notes:: Erscheinungsdatum des Originals ist aus dem Copyrightjahr ermittelt.

Usage licence:: Attribution 4.0 International (CC BY 4.0)

Editor:: Allam, Mosaad; Plunkett, Gordon

Corporations:: Symposium Systems for Data Processing, Analysis and Representation, 1994, Ottawa; International Society for Photogrammetry and Remote Sensing; International Society for Photogrammetry and Remote Sensing, Commission Instrumentation for Data Reduction and Analysis; Kanada, Surveys, Mapping and Remote Sensing Sector

Adapter:: Symposium Systems for Data Processing, Analysis and Representation, 1994, Ottawa; International Society for Photogrammetry and Remote Sensing; International Society for Photogrammetry and Remote Sensing, Commission Instrumentation for Data Reduction and Analysis; Kanada, Surveys, Mapping and Remote Sensing Sector

Founder of work:: Symposium Systems for Data Processing, Analysis and Representation, 1994, Ottawa; International Society for Photogrammetry and Remote Sensing; International Society for Photogrammetry and Remote Sensing, Commission Instrumentation for Data Reduction and Analysis; Kanada, Surveys, Mapping and Remote Sensing Sector

Other corporate:: Symposium Systems for Data Processing, Analysis and Representation, 1994, Ottawa; International Society for Photogrammetry and Remote Sensing; International Society for Photogrammetry and Remote Sensing, Commission Instrumentation for Data Reduction and Analysis; Kanada, Surveys, Mapping and Remote Sensing Sector

Publisher of the digital copy:: Technische Informationsbibliothek Hannover

Place of publication of the digital copy:: Hannover

Year of publication of the original:: 2019

Document type:: Monograph

Collection:: Earth sciences

Chapter

Title:: [Wednesday, June 8, 1994]

Document type:: Monograph

Structure type:: Chapter

Chapter

Title:: [Joint ISPRS/ GIS '94 Plenary III]

Document type:: Monograph

Structure type:: Chapter

Chapter

Title:: THE USE OF GPS FOR GIS GEOREFERENCING: STATUS AND APPLICATIONS M. Elizabeth Cannon

Document type:: Monograph

Structure type:: Chapter

du THE USE OF GPS FOR GIS GEOREFERENCING: STATUS AND APPLICATIONS M. Elizabeth Cannon Department of Geomatics Engineering, The University of Calgary, 2500 University Drive N.W., Calgary, Alberta, T3H 1Z2, Canada KEY WORDS: GPS, GIS, surveying, georeferencing, receiver, static, kinematic ABSTRACT The use of GPS for georeferencing has entered a new age with the operational capability of GPS system as well the developments in GPS receiver technology and processing strategies. The current status of GPS methods and accuracies are reviewed in the context of GIS applications. Trends in GPS hardware are also presented. Several applications of GPS for the acquisition of spatially-related data are discussed. These include applications in the agricultural sector for salinity mapping and variable fertilizer spreading. Other applications in urban environments are also presented where shading problems may limit the achievable accuracy and availability of GPS. The paper concludes with a discussion of the trend in GPS processing developments, especially high precision real-time positioning, and its impact in the GIS field. 1. INTRODUCTION The Global Positioning System (GPS) has already made a major impact into the fields of surveying and georeferencing. With the completion of the satellite constellation, the reduction in receiver costs, as well as improvements in processing algorithms and related software, the growth in applications is expected to continue. Most recently, the GIS field is embracing the use of GPS for moving platform applications, the so-called kinematic approach where large amounts of data can be collected in a cost-effective manner. The following papers focuses on the current state of the GPS system, the options for receiver hardware selection, the numerous modes of data collection as well as a cross-section of kinematic GPS applications for the land, marine and airborne environments. 2. STATUS OF GPS AND TRENDS IN RECEIVER TECHNOLOGY GPS is entering a new era now that the system is nearing completion and moving to the operational phase. There are currently 26 satellites in orbit of Which 3 are prototype Block I. Under this constellation, the geometry is effectively consistent throughout most of the day as evidenced by the Position Dilution of Precision (PDOP) Which is given in Figure 1 for satellites in view at Calgary in March, 1994. The PDOP is a figure of merit for the satellite geometry and a value below three can be considered good. Since the satellite Coverage is generally below three for most of the 163 day, detailed mission planning is not as important as in the past except when satellites become unhealthy which may cause outages. Another Block II satellite is expected to become operational in mid-March, 1994 which will further enhance the current coverage. A er d Al mann nt — 0 4 8 12 16 20 24 Time (Hr) Fig. 1: Position Dilution of Precision (PDOP) for Calgary in March, 1994 With the availability of continuous GPS coverage, the use of the system for a wide range of applications is increasing at high rate. In order to meet these range of applications, GPS receiver manufacturers currently offer a wide range of products that vary in size, cost, performance and capabilities. Table 1 gives a list of some of major classes of GPS receivers. The first is the Coarse/Acquisition (C/A) code engine which is a GPS receiver on a circuit board having dimensions

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