The GPSWorld news Innovation: Examining precise point positioning now and in the future, by Sunil Bisnath, John Aggrey, Garrett Seepersad and Maninder Gill, carried out a deep review about the Precise Point Positioning innovations, examining the PPP technology status and its possible developments. The news mentions almost all the technologies employed by ESCAPE. It also contains a  review of the state-of-the-art about Precise Positioning algorithms (where the evolution of the PPP and RTK through the years is explained) and about techniques devoted to improve the performances of the PPP (which is used in ESCAPE).

As presented in the preliminary design of the positioning engine (http://www.gnss-escape.eu/wp-content/uploads/2018/01/ESCAPE_InfoNote_December-2017_v10.pdf), the EGE architecture is composed mainly by a GNSS Module and a CAM Module. The GNSS Module combines the solution given by a Standard Positioning Service (SPP, named in the post as SPS), and a dual-frequency Precise Point Positioning (PPP). These two techniques also use the data provided by the IMU available in ESCAPE platform. The CAM Module combines the solution given by the GNSS Module with the measurements provides by the cameras available in the car. So, within the technologies presented in the article, ESCAPE benefits from the dual-frequency PPP, combined with Standard Positioning. Moreover, IMU and camera measurements are used in order to obtain a better solution.

As mentioned in the article, one of the best techniques for improving the performance of the PPP is the use of a correction service from which some external information can be given to the PPP in order to improve both its convergence time and its performance. In ESCAPE, a PPP corrections service is used in order to send information about the satellite orbits and clocks and thus, improving the user positioning accuracy.

On the other hand, the use of the PPP with mass-market receivers is also highlighted in the article. The new multi-frequency GNSS receiver Teseo V will be used in the ESCAPE platform, allowing the user to benefit from the use of the Precise Positioning algorithms in the most cost-efficient way.

The in-depth analysis on the state-of-the-art of the Precise Positioning techniques demonstrates how the ESCAPE’s design of the positioning engine is future-proof.

 

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