System and method for hybrid precise point positioning and real-time kinematic position estimation with mean-field carrier multipath mitigation

Abstract

The invention improves Global Navigation Satellite System (GNSS) accuracy using a novel hybrid approach combining Real-Time Kinematic (RTK) and Precise Point Positioning (PPP) techniques with advanced multipath mitigation. The system receives positioning data from multiple GNSS devices and uses a server-based location correction engine to process this information. It generates estimated position values and ambiguity measurements, which are then used in both RTK and PPP algorithms. The system also applies a mean-field carrier multipath mitigation technique, leveraging an ensemble solver to compute multipath-free position estimates. This approach addresses both device-specific and environmental errors, particularly benefiting consumer-grade GNSS devices. By iteratively refining position estimates and correcting for multipath effects, the system achieves high-precision positioning without relying on fixed base stations, offering centimeter-level accuracy for a wide range of applications.

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