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In the world of high-precision surveying, NMEA messages are essential for reliable communication between GNSS receivers and other devices. These standardized messages provide critical data such as location, speed, heading, and more, enabling surveyors to make informed decisions in real-time. Understanding these messages is crucial for optimizing the performance of your GNSS systems, whether you're in construction, agriculture, or any other field that relies on precise positioning. In this blog, we'll break down key NMEA messages, their meanings, and their practical applications across various scenarios.

In our previous blogs, we introduced NMEA-0183 and the key message $GPGGA. For RTK devices, providing Positioning, Navigation and Timing (PNT) data to different software and platforms often involves the use of standard NMEA messages. In this blog, we will introduce the most common NMEA messages used in RTK devices, in addition to $GPGGA.

As a surveyor, you've probably heard the word NMEA or GPGGA many times. Such as when using a GNSS device with an echo sounder, it always requires NMEA-0183 data stream from GNSS device to the echo sounder.