Integrity monitoring scheme for single-epoch GNSS PPP-RTK positioning

Single-Epoch GNSS Array Integrity: An Analytical Study

In this contribution we analyze the integrity of the GNSS array model through the socalled uniformly most powerful invariant (UMPI) test-statistics and their corresponding minimal detectable biases (MDBs). The model considered is characterized by multiple receivers/satellites with known coordinates where the multi-frequency carrier-phase and pseudo-range observables are subject to atmospheric (...

Relative Positioning with RTK Filtering and PPP FILLING THE GAPS

Tightly-Coupled Integration of Multi-GNSS Single-Frequency RTK and MEMS-IMU for Enhanced Positioning Performance

Dual-frequency Global Positioning System (GPS) Real-time Kinematics (RTK) has been proven in the past few years to be a reliable and efficient technique to obtain high accuracy positioning. However, there are still challenges for GPS single-frequency RTK, such as low reliability and ambiguity resolution (AR) success rate, especially in kinematic environments. Recently, multi-Global Navigation S...

High-Accuracy Positioning in Urban Environments Using Single-Frequency Multi-GNSS RTK/MEMS-IMU Integration

The integration of Global Positioning System (GPS) real-time kinematics (RTK) and an inertial navigation system (INS) has been widely used in many applications, such as mobile mapping and autonomous vehicle control. Such applications require high-accuracy position information. However, continuous and reliable high-accuracy positioning is still challenging for GPS/INS integration in urban enviro...

Multiple Carrier Ambiguity Resolution and Performance Benefits for RTK and PPP Positioning Services in Regional Areas

Based on original code and phase measurements to three or more ranging signals offered by future GNSS systems, this paper outlines geometry-free and geometry-based ambiguity resolution (AR) strategies for DD phase measurements and introduces the algorithms that improve estimation of zero-differenced (ZD) phase biases using a network of GNSS reference stations. Given three L-band frequencies, AR...