Global positioning ContentsGlobal Navigation Satellite System (GNSS) constellationsA GNSS constellation is a system of satellites that provides autonomous geospatial positioning that allows electronic devices with compatible receivers to determine their location (longitude, latitude and altitude).Satellite-Based Augmentation Systems (SBAS)Satellite-Based Augmentation Systems (SBAS) are systems that are used to complement existing GNSS by providing differential corrections that improve GNSS performance, including accuracy, availability, and reliability.GNSS (GPS) StatusYour vessel’s GNSS (GPS) position is displayed in the top left corner of the Homescreen. The status of the position fix and the satellites in use is displayed in the Fix menu.GNSS settingsThe settings for your GNSS (GPS) receiver (internal or external) can be accessed from the Satellites menu: Homescreen > GNSS pop-over > Satellites > Settings.Raymarine GNSS receiver compatibilityGNSS constellation compatibility is product and software version-dependent.Parent topic: HomescreenPrevious topic: Homescreen Dynamic tileNext topic: Status area