Real-time kinematic positioning

Real-time kinematic positioning (RTK) is the application of surveying to correct for common errors in current satellite navigation (GNSS) systems. It uses measurements of the phase of the signal's carrier wave in addition to the information content of the signal and relies on a single reference station or interpolated virtual station to provide real-time corrections, providing up to centimetre-level accuracy. With reference to GPS in particular, the system is commonly referred to as carrier-phase enhancement, or CPGPS.

It has applications in land surveying, hydrographic surveying, and in unmanned aerial vehicle navigation.

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Source: Wikipedia · Image: Wikimedia Commons · CC BY 4.0

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