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GPS Mapping Software - Using the GPS dataview - Tutorial

Introduction

The GPS dataview is used to display all information retrieved from a connected GPS to the user. The dataview is integrated in the GPS mapping studio environment as a docked window. By default, it is displayed on the left from the map display.

The following information can be displayed in this view:

• GPS position in WGS84 latitude and longitude;
• GPS position in UTM coordinates;
• GPS position in the selected local grid;
• Altitude;
• Course;
• Speed;
• GPS satellite count;
• GPS fix quality;
• DGPS beacon ID;
• DGPS beacon data age;
• PDOP;
• HDOP;
• VDOP;
• Position Error;
• MSK receiver information;
• Current Time;
• Navigation Info;

click on the image to enlarge

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Showing or hiding the view

By default, the dataview is displayed as a docked tabbed window. If you want to show or hide this window, just select the "Navigation Data" option from the "View" menu. Sometimes the windows is already displayed, but as a tabbed window. You have to select the "Navigation Data" tab to bring the window to the foreground. This tabs look like the image below:

click on the image to enlarge

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Select items to display

You can easily modify the dataview by showing and hiding items. By showing only the needed information, the display will become more well organized. To select the items to display, right-click on the dataview to show the following dialog:

click on the image to enlarge

Just select the items to display, by checking them.

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Items

Position - Latitude / Longitude

Your current GPS position in WGS84 latitude and longitude format. It is possible to change the display format used. The display format can be modified from in the "Units" tab in the preferences window ( "Preferences..." from the "Options" menu ).

Position - Universal Transverse Mercator

Your current GPS position in UTM (Universal Transverse Mercator). The UTM zone is automatically detected using your current position, and will also be displayed. The UTM coordinates are displayed in northing and easting meters.

Position - User Selected Grid

Your current GPS position displayed in either easting and northing or latitude and longitude, depending on the local map grid used to display the current map. This projection is the same as the projection displayed in the statusbar at the bottom of the screen.

Altitude

Altitude of the GPS antenne. Depending on the GPS, this can be the altitude above sea level, or the altitude above the geoid. The altitude can be displayed in meters or feet. The current altitude unit setting can modified from in the "Units" tab in the preferences window ( "Preferences..." from the "Options" menu ).

Course

Course calculated by the GPS. Also know as course over ground.

Speed

Speed calculated by the GPS. Also known as speed over ground. The speed can be displayed in miles per hour, meters per second, knots and kilometers per hour. The current altitude unit setting can be modified from the "Units" tab in the preferences window ( "Preferences..." from the "Options" menu ).

GPS Statistics

This option can be selected to retrieve more information on the GPS fix. This section in the dataview includes the quality of the GPS fix (no fix, GPS fix, DGPS fix, etc...), the number of satellites used and some basic information on the DGPS reference station used (not available when using EGNOS/WAAS).

DOP

This option can be selected to enable the DOP (Dillution Of Precision) section in the dataview. It shows PDOP (overall dillution of precision or position dillution of precision), HDOP (horizontal dillution of precision) and VDOP (vertical dillution of precision).

EPE

EPE is short for Estimated Position Error. These errors are calculated by some Garmin GPS receivers. The values will not work when a non Garmin GPS device is connected. Enabling this will display overall, horizontal and vertical position error in meters.

MSK

When a DGPS beacon is received, you can select this option to display more information on the DGPS reference station used, like frequency, signal strength and bitrate. In case WAAS/EGNOS is used to provide a differential position, these values are not availbale.

Clock

Just displays the current PC date and time in GMT (Greenwich Mean Time).

Navigation Info

When the software is used in waypoint-to-waypoint navigation, enabling this option will cause the dataview to show bearing and distance to waypoint.

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