Development of Precise Point Positioning Realtime Kinematic Solution
Last Updated: 16/02/2023 13:11 Created at: 16/02/2023 12:53
Final Presentation of NAVISP Project EL2 103 now available:
On Tuesday, January 17, 2023, RX Networks presented the results of the NAVISP project “Development of Precise Point Positioning Realtime Kinematic (PPP-RTK) Solution”. About 50 people from industry and research followed the interesting presentation and the subsequent interactive Q&A session.
Global Navigation Satellite Systems (GNSS) like GPS, Galileo and others enable positioning by determining the range between a satellite and an observer. The apparent range (pseudo range) results from the observed travelling time of a signal transmitted from a satellite to a receiver multiplied by the speed of light. The measured distance is however affected by several error sources, including satellite orbit and clock errors, biases of the satellite and receiver hardware, as well signal propagation impairments caused by ionospheric and tropospheric effects. These effects lead to inaccuracies in the real-time positioning of about 3 to 8 meters when using the satellite signals only.
GNSS augmentation services are therefore needed to generate GNSS corrections by continuously processing and monitoring the observations received by reference stations. Such GNSS real-time correction services enable that the range of inaccuracies are reduced thus allowing device positioning to be within centimeters.
In this context, RX Networks developed the infrastructure and an end-to-end service for real-time global precise point positioning (PPP) on a former NAVISP activity; NAVISP Element 2 ID 037 HAAS (High Accuracy Assistance Service) launching their TruePoint.io commercial solution.
Within this project developed TruePoint.io PPP-RTK with a denser reference network including system biases to achieve at regional areas decimeter-level user position accuracy together with shorter convergence time (within the minute), as well as a positioning engine for its integration into customers’ devices (e.g., chipsets and receivers) covering both code and carrier phase-based positioning.
The project included the enhancement of the prediction servers to produce the correction products, interface with commercial correction services, corrections on SSR and OSR formats, the enhancement of the user delivery infrastructure including monitoring to ensure companies user's SLAs and the SW receiver client to compute the PPP-RTK positioning solution to be embedded in the customers’ equipment.
Thanks to the support of NAVISP the developed solution is capable to provide support for:
- Any Hardware system and all major Output Formats (RTCM standard, open standard formats and customer-defined formats)
- All Constellations (initially supporting GPS, Galileo, BeiDou, GLONASS)
- Any Reference Station Interface (standardized interfaces, RINEX, RTCM and others)
- All Rovers/Clients
The project was part of NAVISP Element 2, which aims to maintain and improve the capabilities and competitiveness of the participating States' industry in the global market for satellite navigation and, more broadly, PNT technologies and services.
More detailed information can be found in the slides of the Final Presentation.