GNSS (Global Navigation Satellite System)

Overview

GNSS is a general term which covers satellite systems used for navigation, like GPS (Global Positioning System). GNSS services are usually accessed through GNSS modems which receive and process GNSS signals to determine their position, or more specifically, their antennas position. They usually additionally provide a precise time synchronization mechanism, commonly named PPS (Pulse-Per-Second).

Subsystem support

The GNSS subsystem is based on the Modem modules. The GNSS subsystem covers everything from sending and receiving commands to and from the modem, to parsing, creating and processing NMEA0183 messages.

Adding support for additional NMEA0183 based GNSS modems requires little more than implementing power management and configuration for the specific GNSS modem.

Adding support for GNSS modems which use other protocols and/or buses than the usual NMEA0183 over UART is possible, but will require a bit more work from the driver developer.

Configuration Options

Related configuration options:

GNSS API Reference

GNSS Interface

Related code samples

  • GNSSConnect to a GNSS device to obtain time, navigation data, and satellite information.