PPK and RTK are both methods for achieving high-accuracy positioning using GNSS data. The main difference is that RTK uses real-time communication with a reference station to provide corrections to the GNSS data, while PPK processes the data offline using reference data collected separately from the GNSS data.
PPK can provide centimetre-level accuracy, which is much higher than what can be achieved with standard GNSS positioning methods. AECA has successfully achieved approximately 3cm accuracy consistently.
The time required to process PPK data depends on the amount of data collected and the processing power of the computer being used. In general, PPK processing can take anywhere from a few minutes to several hours.
PPK is commonly used in applications where high-accuracy positioning is critical, such as surveying, mapping, and precision agriculture. It can also be used in other applications requiring accurate positioning data, such as construction, mining, and environmental monitoring.