Leica GS20 manual 5.1Coordinate Systems, 5.1.1Introduction, Job Management

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5.1Coordinate Systems

5.1Coordinate Systems

5.1.1Introduction

Although the GS20 stores all GPS data in a WGS84 geographic coordinate format, it is possible to translate your data into a local datum, projection, or coordinate system. A pre-defined coordinate system is usually made up of

1.An ellipsoid: or a spheroid created to model the earths surface

a.If different from WGS84, a translation is necessary for orientation

2.A Projection: or a means to transform a spherical surface to a 2 dimensional grid

a.Cones and Cylinders are the most common forms of projection

3.A transformation: or a shifting of the system

a.3 dimensional transformations involve both Cartesian X,Y,Z shift, as well as a rotation and scaling factor

b.2 dimensional transformation usually involve an Euclidean X,Y shift, as well as a rotation, and scaling factor. The Z value, perpendicular to the XY plane can also be shifted.

4.Geoid: or an equipotential surface which coincides with mean-sea level, and which may be imagined to extend through the continents. This surface is everywhere perpendicular to the direction of the force of gravity

a.The geoid is also an interpolation file, and is based on a grid network of gravity reading. Usually this type of file is local to a geographic region, such as a country or continent.

5.CSCS: or Country Specific Coordinate System is an interpolation file that estimates nonlinear error between known points with both WGS and local coordinate values

a.These CSCS can be geographic. Cartesian or local grid in nature. An example of this is the NADCON or North American Datum Conversion.

Leica GS20 Field Guide-1.1.0en

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Job Management

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Contents Leica Geosystems GS20 Field GuideVersion Leica Geosystems GS20 Symbols Used in This ManualView of chapters Introduction The Leica Geosystems GS20Philosophy of Operation IntroductionRegistration RegistrationRegistration Company stamp, additional notes/informationLeica dealer Table of Contents Table of Contents1. Basic Operation 2. Data CollectionTable of Contents 3. Data Management4. Navigation 5. Job ManagementSetup Table of Contents7. Applications UtilitiesTable of Contents 10.Status11.Glossary 12.Index1. Basic Operation 1.1Batteries and Charging1.1.1Calibrating the Battery Basic Operation1.2Powering On the Unit 1.3Icons1.3.1Accuracy Indicator Figure 1-1 Accuracy Indicator1.3.2Stop and Go Indicators 1.3.3Satellite Indicator1.3.6Battery and Time Indicators 1.3.4Differential Corrections1.4Button Functions 1.4.2Power Key1.4.1Alpha Numeric Keys Basic Operation1.4.3Enter and Escape 1.4.4Cursor Keys1.4.5Menu Button Basic Operation1.4.6The Main Menu 1.4.7PagingBasic Operation Figure 1-3 GS20 Main Menu1.5Software User Interface 1.5.1Map ViewsBasic Operation Figure 1-4 Mapview Selected and Filtered1.5.2GPS Symbol and Zoom Controls 1.5.3Context MenusBasic Operation The map submenu contains zoom controls for1.5.4Tables and Filtering 1.5.5FilteringBasic Operation 1.5.5.1 Map FiltersBasic Operation 1.5.5.2 Table Filters2. Data Collection 2.1Job ManagementData Collection Figure 2-2 Job Management Screenflow2.2Background Files in the GS20 2.2.1Overview2.2.2Adding Background Files to a GS20 Job Data Collection2.2.4Transferring a background File Data Collection2.2.3Creating a Background File in GIS DataPRO Figure 2-4 Creating a background2.2.5Viewing the Map Data CollectionFigure 2-6 Turning off the background Figure 2-5 Viewing the Map2.3Code Management 2.3.1Creating CodelistsData Collection 2.3.2Using the Codelist Manager 2.3.3Steps for codelist creationData Collection Data Collection 1. Click on Codelist and select New CodelistData Collection 2.3.3.3 Step 3 Creating AttributesFigure 2-7 Map Symbology Data CollectionFacts About Attributes Figure 2-8 Transferring Codelists2.4The Codelist and Occupation 2.4.1The Job Codelist2.4.2Attribution 2.4.3Point CollectionData Collection 2.4.3.1 Point OffsetsFigure 2-11 Example of Dist.Dist O/S Figure 2-12 Offset Methods Graphical2.4.4Line and Area Collection Data CollectionFigure 2-13:Line and Area 2.4.5Modes of Collection Data CollectionFigure 2-14 Attribution screen Data Collection 3.1Philosophy of Feature Selection 3. Data Management3.1.2Options with a Feature Selected 3.1.1Options with Nothing Selected3.2Selecting a Feature 3.2.1Feature Management3.1.3Options with a Node Selected Data Management3.2.3Feature Submenu 3.2.2Selecting a Node or “Vertex”Data Management 3.2.1.1 Table Filtering3.2.4Node Submenu Data Management3.2.4.1 Re-OccupyingNodes Feature Management Feature ManagementInserting into a Feature Node Mode Data Management3.3Using the Geographic Clipboard 3.3.1Purpose of the Geographic ClipboardData Management blocks Data Management3.3.2Flow of use Sharing a common node between 3.3.3Creating Point Topology Data Management4. Navigation Navigation4.1The Navigation Screen Navigation4.3Creating a new Waypoint feature 4.2Waypoint Selection and ManagementNavigation 4.4Updating a Navigated Feature Navigation5. Job Management Job ManagementFigure 5-1 New Job Dialog 5.1Coordinate Systems 5.1.1IntroductionJob Management 5.1.2Overview 5.1.3Attaching a Coordinate SystemJob Management Figure 5-2 Coordinate System5.1.4Field File Job ManagementGeoid Field File Job Management Job Management Leica GS20 Field Guide-1.1.0en6. Codelist Management 6.1Creating a New CodelistCodelist Management 6.2Creating a New Code 6.2.1Creating a New AttributeCodelist Management 7. Applications 7.1Cultivated Field Control7.1.2Setup 7.1.1IntroductionApplications All identifiers are listed below7.1.3Using the Program ApplicationsSelect a Tolerance or limit of error ApplicationsApplications Leica GS20 Field Guide-1.1.0enApplications Leica GS20 Field Guide-1.1.0en8. Utilities 8.1File Browser8.1.1Browser Controls 8.1.2Context Menu8.1.3Firmware Update 8.1.4Sensor Transfer8.1.5Clear System Memory Utilities9. Setup Configurations9.1Selecting, Modifying and Creating Setup9.2Tree Directory Navigation 9.3Hardware ManagementSetup 9.3.1Hardware9.3.3Wireless Bluetooth Connectivity Setup9.3.3.1 Selecting a Wireless Device 9.3.2ContrastSetup 9.3.4Clearing a Selected Device9.3.5Real-TimeCorrections with a Mobile Phone 9.3.6Linking with the Bluetooth 9.3.7Configuring your DeviceSetup Making the connect9.3.8Modifying your Configuration 9.3.9Connecting to the StationSetup 9.3.8.1 Status Indication9.4ID Template Management Setup9.4.1Creating an ID Template 9.4.2Modifying an Existing Template9.5Device Manager 9.6GPSSetup 9.5.1Creating a New DeviceSetup when an antenna has been plugged in or unplugged9.6.2Minimum Satellites 9.6.3Antenna Type9.7Data Collection Setup9.6.5Initialization 9.7.1Quality Monitor9.8Interfaces Setup9.8.1Real-Time 9.8.2GS20 Phase Wizard Setup9.8.2.1 Overview Setup 9.8.2.2 Static Phase9.8.2.3 Kinematic Phase 9.8.2.4 The InterfaceSetup Leica GS20 Field Guide-1.1.0enSetup 9.8.3WAAS and EGNOSSetup 9.8.3.1 Understanding the WAAS Corrections9.8.4Connecting to WoRCS Beacon Setup9.8.3.2 Changes to the Real-TimeScreen Setup 9.8.4.1 Powering on the WoRCS9.8.4.2 Checking the Bluetooth Link Setup 9.8.4.3 Checking the WoRCS Real-TimeLink9.8.4.4 WoRCS Real-TimeBeacon Setup 9.8.5Connecting to WoRCS Real-TimeSatellite RTSSetup 9.8.5.1 Powering on the WoRCS9.8.5.2 Checking the Bluetooth Link Setup Setup 8 Setup9.8.5.3 Checking the WoRCS Real-TimeLink 9.8.5.4 WoRCS RTSSetup 9.8.6.1 Configuration of the GS209.8.6Offset Devices Setup Leica GS20 Field Guide-1.1.0enSetup 30’00”Setup Leica GS20 Field Guide-1.1.0enSetup Double Azimuth or Double DistanceReverse Azimuth and Distance Setup 9.8.7ASCII InputTo link an external ASCII Device 9.9Units and Formats Setup9.9.1Units of Measure 9.9.2Language10. Status 10.1GPS10.1.1 Position 10.1.2 Satellite Information10.2Interfaces 10.3Hardware10.1.3 Satellite View 10.2.1 Real-Time11. Glossary GlossaryGlossary Dilution of precision DOPGlossary LongitudeSignal to Noise Ratio RTCMSelective Availability Time and Initial Position12. Index 733607-1.1.0en