Improvement of SPP NMEA output using correction projection method

Abstract

Differential Global Navigation Satellite Systems (DGNSS) positioning is a relative technique used for meter level accuracy requirements that needs an extra communication link between the base and the rover in real-time. For the offline user, the technique can be also used by considering the raw data for both receivers. In the last decade, smartphones with GNSS hardware enormously boomed. In this study, the DGNSS method for low-cost receivers, DGNSS Correction Projection (DGNSS-CP) algorithm was developed and applied for the low-cost, u-blox M8P single-frequency GNSS receiver. The results were analyzed with in-house software developed in MATLAB environment. Detailed analysis of the results outlined that the DGNSS-CP algorithm produced identical results with the position correction in short distance uses. The differential correction in coordinate space (DGNSS-CP) can be applied successfully to all smartphone users.