A Simplified NMEA Sentence Generator for the Simulation of GPS Tracking
Gayathri Rajendran, M. Arthanari, M. Sivakumar · Global Journal of Computer Science and Technology · 2010
The applications of GPS (Global Positioning System) tracking in real time have found its place in almost all walks of life, for instance, navigation, map making, land surveying, fishing and trekking. GPS tracking is defined as the measurement of object position and orientation in a given coordinate system using GPS data. GPS data can be used for tracking objects in real-time. When fixed with moving objects, GPS receivers are used to track them by generating GPS data in the form of standard NMEA (National Marine Electronics Association) sentences. One of the most important NMEA sentences is the recommended minimum sentence C, $GPRMC, which provides the essential GPS PVT (position, velocity, time) data. This $GPRMC sentence is used for the tracking of objects. But for doing research with GPS data, multiple GPS receivers are needed to generate GPS data in NMEA format, which involves huge cost. The simplified NMEA sentence generator is a software which generates the NMEA formatted GPS data i.e., $GPRMC sentence without using a GPS receiver. This generator is useful to create a database of GPS data and simulate an environment of GPS tracking without using actual GPS receivers.