Estimating the absolute total electron content based on single-frequency satellite radio navigation GPS/GLONASS data

Abstract

We present a new technique for estimating the absolute vertical and slant total electron content (TEC). The estimation is based on single-frequency joint phase and pseudorange GPS/GLONASS measurements at single stations. Estimated single-frequency vertical TEC agrees qualitatively and quantitatively with the dual-frequency vertical TEC. For analyzed stations a typical value of the difference between the single-frequency vertical TEC and dual-frequency ones generally does not exceed ~ 1.5 TECU with RMS up to ~ 3 TECU.

Keywords

• Ionosphere
• GPS
• GLONASS
• Total electron content
• Single-frequency data