Some advantages of using standalone GNSS module are as follows:
Increased Accuracy and Robustness: Compared to receivers that rely on assistance data (aided), standalone GNSS modules generally provide higher accuracy due to the lack of dependency on another receiver. In addition, standalone GNSS modules are more likely to maintain good accuracy in challenging environments, such as under tree cover or in urban canyons.
Extended Battery Life: By using only the GNSS satellite signals for positioning, a standalone GNSS module typically consumes less power than a receiver that also uses other sources of location information, such as Wi-Fi, cell tower triangulation, or Bluetooth. This extended battery life can be important in limited power applications or devices needing to operate for long periods.
Fast Satellite Acquisition: Standalone GNSS modules receive the satellite broadcast messages containing the ephemeris data. The receiver calculates its position based on the location of the satellites and their known positions, which eliminates a time-consuming download of ephemeris data from a base station via cellular or Wi-Fi networks.