When developing IoT devices for positioning applications, the foremost thing to consider is to choose a suitable positioning module for your device. It could be quite complicated in terms of technologies. However, if you understand the following 5 basics about satellite positioning modules, it will be much easier to choose the right one for your application and product.
GPS or GNSS
When it comes to positioning, the first thing we think of is GPS. The American GPS (Global Positioning System) is the first satellite navigation system in the world. As other countries have also fielded their own satellite navigation systems, now there are others with global coverage, including China's Beidou, Russia's GLONASS and Europe's Galileo. In addition, and there are also some regional systems, such as Japan's QZSS and India's IRNSS. GNSS (Global Navigation Satellite System) does not specifically refer to any single satellite system, but a combination of several of the aforementioned systems and their enhancements.