A. Khodabandeh and N. Nadarajah, Department of Infrastructure Engineering, The University of Melbourne, Australia

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Abstract:

State-space representation of the positioning corrections gives PPP-RTK a marked advantage over its observation-space counterpart, network-RTK. Making use of the distinct temporal properties of the GNSS parameters (states), the PPP-RTK correction provider is in a position to optimize the transmission bandwidth required for sending the corrections to single-receiver users. In this contribution, we study a single-receiver constant-velocity setup with which a reference receiver can act like a PPP-RTK correction provider, sending individual state-space corrections that are subject to time-delay. With the provision of the velocity components of the corrections, the user is enabled to predict delayed corrections over time so as to realize continuous real-time positioning. Numerical results demonstrate that an increase in the number of tracked satellites allows one to increase the corrections’ time-delay, yet ensuring successful user ambiguity resolution.