TY  - GEN
A1  - Thoelert, Steffen
A1  - Hörmann, Ulrich
A1  - Antreich, Felix
A1  - Meurer, Michael
T1  - Ionospheric effects on high gain antenna GNSS measurements
BT  - TEC estimation and correction
T2  - Proceedings of the 30th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS+ 2017)
N2  - The ionospheric delay of global navigation satellite systems (GNSS) signals typically is compensated by adding a single correction value to the pseudorange measurement of a GNSS receiver. Yet, this neglects the dispersive nature of the ionosphere. In this context we analyze the ionospheric signal distortion beyond a constant delay. These effects become increasingly significant with the signal bandwidth and hence more important for new broadband navigation signals. Using measurements of the Galileo E5 signal, captured with a high gain antenna, we verify that the expected influence can indeed be observed and compensated. A new method to estimate the total electron content (TEC) from a single frequency high gain antenna measurement of a broadband GNSS signal is proposed and described in detail. The received signal is de facto unaffected by multi-path and interference because of the narrow aperture angle of the used antenna which should reduce the error source of the result in general. We would like to point out that such measurements are independent of code correlation, like in standard receiver applications. It is therefore also usable without knowledge of the signal coding. Results of the TEC estimation process are shown and discussed comparing to common TEC products like TEC maps and dual frequency receiver estimates.
Y1  - 2017
U6  - https://doi.org/10.33012/2017.15343
SN  - 2331-5911
SN  - 2331-5954
SP  - 3368
EP  - 3374
PB  - Instituite of Navigation
CY  - Washington
ER  -