Leica GS20 manual Glossary, Longitude

Page 97

Longitude

Longitude is the angle between the meridian ellipse which passes through Greenwich and the meridian ellipse containing the point in question.

Mask Angle

The minimum elevation angle below which no more GPS satellites are tracked by the receiver.

Max Accuracy (ClearTrack)

The tracking mode incorporating carrier phase smoothing with the highest discriminating tracking algorithms.

Max Track

Leica’s Trademark tracking technology created for dense foliage and other inhospitable environments.

Maximum Age of Correction

The amount of time a real-time correction will be used to adjust a GPS position, once the correction link is lost.

Meridian

An imaginary line joining north to south pole and passing through the equater at 90o.

Multipath Error

A positioning error resulting from interference between split radio waves which have travelled to the receiver from differing paths.

NMEA

National Marine Electronics Association. A standered originally defined to enable marine electronics instruments, communication, and navigation equipment to communicate.

Orthometric Height

The distance of a point above the geoid (or mean sea level). Ortho = Elipsoid - Geoid.

PDOP

Positional dilution of precision. See DOP

Post-processing

The process of computing positions in non-real-time, using data previously collected by GPS receivers. See differential corrections.

Pseudo-range

A measure of the apparent signal propagation time from the satellite to the receiver antenna, scaled into distance by the speed of light. Pseudorange differs from the actual range by the inlfuence of satellite and user clock.

Quality

A measure of precision calculated by residuals calculated using a 2D sigma (67% confidence)

Real-Time

A DGPS position calculated by correcting autonomous GPS with a differential correction.

Leica GS20 Field Guide-1.1.0en

97

Glossary

Image 97

Contents Field Guide Leica Geosystems GS20Version Symbols Used in This Manual Leica Geosystems GS20View of chapters The Leica Geosystems GS20 IntroductionPhilosophy of Operation IntroductionRegistration RegistrationCompany stamp, additional notes/information RegistrationLeica dealer Table of Contents Table of Contents1. Basic Operation 2. Data Collection3. Data Management Table of Contents4. Navigation 5. Job ManagementTable of Contents Setup7. Applications Utilities10.Status Table of Contents11.Glossary 12.Index1.1Batteries and Charging 1. Basic Operation1.1.1Calibrating the Battery Basic Operation1.3Icons 1.2Powering On the Unit1.3.1Accuracy Indicator Figure 1-1 Accuracy Indicator1.3.3Satellite Indicator 1.3.2Stop and Go Indicators1.3.6Battery and Time Indicators 1.3.4Differential Corrections1.4.2Power Key 1.4Button Functions1.4.1Alpha Numeric Keys Basic Operation1.4.4Cursor Keys 1.4.3Enter and Escape1.4.5Menu Button Basic Operation1.4.7Paging 1.4.6The Main MenuBasic Operation Figure 1-3 GS20 Main Menu1.5.1Map Views 1.5Software User InterfaceBasic Operation Figure 1-4 Mapview Selected and Filtered1.5.3Context Menus 1.5.2GPS Symbol and Zoom ControlsBasic Operation The map submenu contains zoom controls for1.5.5Filtering 1.5.4Tables and FilteringBasic Operation 1.5.5.1 Map Filters1.5.5.2 Table Filters Basic Operation2.1Job Management 2. Data CollectionData Collection Figure 2-2 Job Management Screenflow2.2.1Overview 2.2Background Files in the GS202.2.2Adding Background Files to a GS20 Job Data CollectionData Collection 2.2.4Transferring a background File2.2.3Creating a Background File in GIS DataPRO Figure 2-4 Creating a backgroundData Collection 2.2.5Viewing the MapFigure 2-6 Turning off the background Figure 2-5 Viewing the Map2.3.1Creating Codelists 2.3Code ManagementData Collection 2.3.3Steps for codelist creation 2.3.2Using the Codelist ManagerData Collection 1. Click on Codelist and select New Codelist Data Collection2.3.3.3 Step 3 Creating Attributes Data CollectionData Collection Figure 2-7 Map SymbologyFacts About Attributes Figure 2-8 Transferring Codelists2.4.1The Job Codelist 2.4The Codelist and Occupation2.4.2Attribution 2.4.3Point Collection2.4.3.1 Point Offsets Data CollectionFigure 2-11 Example of Dist.Dist O/S Figure 2-12 Offset Methods GraphicalData Collection 2.4.4Line and Area CollectionFigure 2-13:Line and Area Data Collection 2.4.5Modes of CollectionFigure 2-14 Attribution screen Data Collection 3. Data Management 3.1Philosophy of Feature Selection3.1.2Options with a Feature Selected 3.1.1Options with Nothing Selected3.2.1Feature Management 3.2Selecting a Feature3.1.3Options with a Node Selected Data Management3.2.2Selecting a Node or “Vertex” 3.2.3Feature SubmenuData Management 3.2.1.1 Table FilteringData Management 3.2.4Node Submenu3.2.4.1 Re-OccupyingNodes Feature Management Feature ManagementInserting into a Feature Node Mode Data Management3.3.1Purpose of the Geographic Clipboard 3.3Using the Geographic ClipboardData Management Data Management blocks3.3.2Flow of use Sharing a common node between Data Management 3.3.3Creating Point TopologyNavigation 4. NavigationNavigation 4.1The Navigation Screen4.2Waypoint Selection and Management 4.3Creating a new Waypoint featureNavigation Navigation 4.4Updating a Navigated FeatureJob Management 5. Job ManagementFigure 5-1 New Job Dialog 5.1.1Introduction 5.1Coordinate SystemsJob Management 5.1.3Attaching a Coordinate System 5.1.2OverviewJob Management Figure 5-2 Coordinate SystemJob Management 5.1.4Field FileGeoid Field File Job Management Leica GS20 Field Guide-1.1.0en Job Management6.1Creating a New Codelist 6. Codelist ManagementCodelist Management 6.2.1Creating a New Attribute 6.2Creating a New CodeCodelist Management 7.1Cultivated Field Control 7. Applications7.1.2Setup 7.1.1IntroductionAll identifiers are listed below ApplicationsApplications 7.1.3Using the ProgramApplications Select a Tolerance or limit of errorLeica GS20 Field Guide-1.1.0en ApplicationsLeica GS20 Field Guide-1.1.0en Applications8.1File Browser 8. Utilities8.1.1Browser Controls 8.1.2Context Menu8.1.4Sensor Transfer 8.1.3Firmware Update8.1.5Clear System Memory UtilitiesConfigurations 9. Setup9.1Selecting, Modifying and Creating Setup9.3Hardware Management 9.2Tree Directory NavigationSetup 9.3.1HardwareSetup 9.3.3Wireless Bluetooth Connectivity9.3.3.1 Selecting a Wireless Device 9.3.2Contrast9.3.4Clearing a Selected Device Setup9.3.5Real-TimeCorrections with a Mobile Phone 9.3.7Configuring your Device 9.3.6Linking with the BluetoothSetup Making the connect9.3.9Connecting to the Station 9.3.8Modifying your ConfigurationSetup 9.3.8.1 Status IndicationSetup 9.4ID Template Management9.4.1Creating an ID Template 9.4.2Modifying an Existing Template9.6GPS 9.5Device ManagerSetup 9.5.1Creating a New Devicewhen an antenna has been plugged in or unplugged Setup9.6.2Minimum Satellites 9.6.3Antenna TypeSetup 9.7Data Collection9.6.5Initialization 9.7.1Quality MonitorSetup 9.8Interfaces9.8.1Real-Time Setup 9.8.2GS20 Phase Wizard9.8.2.1 Overview 9.8.2.2 Static Phase Setup9.8.2.3 Kinematic Phase 9.8.2.4 The InterfaceLeica GS20 Field Guide-1.1.0en Setup9.8.3WAAS and EGNOS Setup9.8.3.1 Understanding the WAAS Corrections SetupSetup 9.8.4Connecting to WoRCS Beacon9.8.3.2 Changes to the Real-TimeScreen 9.8.4.1 Powering on the WoRCS Setup9.8.4.2 Checking the Bluetooth Link 9.8.4.3 Checking the WoRCS Real-TimeLink Setup9.8.4.4 WoRCS Real-TimeBeacon 9.8.5Connecting to WoRCS Real-TimeSatellite RTS Setup9.8.5.1 Powering on the WoRCS Setup9.8.5.2 Checking the Bluetooth Link Setup 8 Setup Setup9.8.5.3 Checking the WoRCS Real-TimeLink 9.8.5.4 WoRCS RTS9.8.6.1 Configuration of the GS20 Setup9.8.6Offset Devices Leica GS20 Field Guide-1.1.0en Setup30’00” SetupLeica GS20 Field Guide-1.1.0en SetupDouble Azimuth or Double Distance SetupReverse Azimuth and Distance 9.8.7ASCII Input SetupTo link an external ASCII Device Setup 9.9Units and Formats9.9.1Units of Measure 9.9.2Language10.1GPS 10. Status10.1.1 Position 10.1.2 Satellite Information10.3Hardware 10.2Interfaces10.1.3 Satellite View 10.2.1 Real-TimeGlossary 11. GlossaryDilution of precision DOP GlossaryLongitude GlossaryRTCM Signal to Noise RatioSelective Availability Time and Initial Position12. Index 733607-1.1.0en