An Optimal Carrier-Phase Smoothing Code Algorithm for Low-Cost Single-Frequency Receivers

Carrier-phase smoothing code (CPSC) is a code-smoothing technology that uses carrier-phase changes to reduce noise in Global Navigation Satellite System (GNSS) appliances. Although CPSC performs well reducing and easy implement, it trade-off between the reduction of increase variation ionospheric errors. The width window needs be large noise. However, wider increases To circumvent this dilemma, grid model (GIM) was used estimate errors consecutive epochs, estimation method proposed for low-cost single-frequency receivers. Furthermore, an optimal carrier phase (OCPSC) algorithm with adaptive Positioning (GPS) data. We found OCPSC more robust its positioning performance better overall receivers than traditional CPSC. In static mode, when applying algorithm, accuracy can improved by 0.15 m (6%) 0.06 horizontal vertical directions, respectively. These improvements are 0.08 (3%) (1%) kinematic mode applied.Practical ApplicationsThe research presented here demonstrates effectively addresses applied dynamic experiments. All results paper show that, compared CPSC, provides more-accurate Because future smartphones will integrate GNSS chips, has great potential widely market multiconstellation Precise Point smartphones.