Advanced GPS

This tool requires a Pro license

The Advanced GPS options allows you to view detailed location information and manage a NMEA stream from a connected external GPS device. This location information will also be used for GPS based digitizing.

An external GPS unit used with Global Mapper will replace the internal location services information on your device with the NMEA stream from the external GPS unit.

Using a bluetooth connected external GPS device with Global Mapper Mobile® requires a companion app for the GPS device to be installed on your mobile device. The appropriate companion app is most likely produced by the GPS unit's vendor, refer to the device's manual to determine the specific app to download.

Follow these steps the make the GPS device location accessible to the Global Mapper Mobile app.

  1. Ensure the GPS device is on an in bluetooth pairing mode.
  2. On your iOS device, Settings > Bluetooth and find your device listed under Available Devices.
  3. Download the companion app appropriate for your GPS device. Refer to the device's manual to determine the specific app to download. Once installed, use the app to connect to the device prior to opening Global Mapper Mobile®.

Note:Global Mapper Mobile®on iOS has been whitelisted by the following GPS vendors: Bad Elf, Dual, EOS, Juniper, Geneq. Please contactmobilehelp@bluemarblegeo.comwith any questions.

Connect to Device

Open the GPS companion app and confirm your GPS device is connected prior to opening Global Mapper Mobile®.

From the Main Menu in Global Mapper Mobile®, tap Advanced GPS > Connect to Device.

Location

View advanced location information gathered from the external GPS.

Satellites

View the satellites being used by the external GPS to determine location.

The satellite map will display satellites within range based on their location, with those to the north at the top of the screen. Those closer to the center of the map have a higher altitude on the horizon. Satellites not being used for location (that have a low signal to noise ratio) will appear as hollow circles.

Below the satellite map expand the section to see the signal to noise ratio for each satellite in range, represented as a bar and a number. Each list shows a count of how many satellites are in range for that constellation.

NMEA Stream

Shows the NMEA Stream as it comes from the external GPS. On this screen you can Record the NMEA stream to a text file, Pause the data stream, and Clear the data stream shown.

Tapping to Record in the bottom right of the NMEA Stream screen will begin recording the data. Upon selecting this option the Record option will change to Stop Recording. Tapping to Stop Recording will prompt you to Save NMEA Log.

From the Save NMEA Log options, select to either Email, Upload to File Location, or Save to Map Folder.

  • Email - This option requires configuration of the default mail application on the device in order to generate the email. The NMEA Stream text file will be attached to the generated email.
  • Upload to a File Location - This option will save the NMEA Stream text file to a selected file location. The locations available will be the file sharing methods you have set up on the device.
  • Copy to Map Folder - This option will save the NMEA Stream text file to the folder location of the open Global Mapper Mobile Package file (*.GMMP) map file.