Details
| Original language | English |
|---|---|
| Number of pages | 1 |
| Publication status | Published - 2019 |
| Event | Galileo Science Colloquium - Zürich, Switzerland Duration: 4 Sept 2019 → 6 Sept 2019 Conference number: 7 |
Conference
| Conference | Galileo Science Colloquium |
|---|---|
| Country/Territory | Switzerland |
| City | Zürich |
| Period | 4 Sept 2019 → 6 Sept 2019 |
Abstract
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2019. Poster session presented at Galileo Science Colloquium, Zürich, Switzerland.
Research output: Contribution to conference › Poster › Research
}
TY - CONF
T1 - Estimation and validation of receiver antenna codephase variations for multi GNSS signals
AU - Breva, Yannick
AU - Kröger, Johannes
AU - Kersten, Tobias
AU - Schön, Steffen
N1 - Conference code: 7
PY - 2019
Y1 - 2019
N2 - Besides antenna phase center corrections (PCC) for carrier phase measurements, which have to be considered for precise GNSS application, also codephase variations (CPV) exist. These are antenna dependent delays of the code which vary with azimuth and elevation. Such variations are not provided operationally in the antenna exchange format (ANTEX) at the moment. Previous studies in our working group show, that CPV should be taken into account when using code-carrier combination. Depending on the antenna type they can amount up to some dm. At Institut für Erdmessung (IfE), a concept to determine the CPV has been established. This procedure uses a robot that rotates and tilts the antenna under test precisely in the field. Real world modulated signals from the satellites are used, which is challenging in anechoic chamber procedures. Time differenced single differences are used to estimate PCC and CPV as spherical harmonics (8,8) in a post-processing approach. In this contribution we present the concept CPV of Galileo signals for several kinds of receiving antennas (mass market and high grade). In addition, we discuss the repeatability and stability of CPV for those antenna. Typical values of the CPV reaches up to 500 mm. The RMS of patterns resulting from multiple calibrations are 80 mm for Galileo C1X and 48 mm for GPS C1C.
AB - Besides antenna phase center corrections (PCC) for carrier phase measurements, which have to be considered for precise GNSS application, also codephase variations (CPV) exist. These are antenna dependent delays of the code which vary with azimuth and elevation. Such variations are not provided operationally in the antenna exchange format (ANTEX) at the moment. Previous studies in our working group show, that CPV should be taken into account when using code-carrier combination. Depending on the antenna type they can amount up to some dm. At Institut für Erdmessung (IfE), a concept to determine the CPV has been established. This procedure uses a robot that rotates and tilts the antenna under test precisely in the field. Real world modulated signals from the satellites are used, which is challenging in anechoic chamber procedures. Time differenced single differences are used to estimate PCC and CPV as spherical harmonics (8,8) in a post-processing approach. In this contribution we present the concept CPV of Galileo signals for several kinds of receiving antennas (mass market and high grade). In addition, we discuss the repeatability and stability of CPV for those antenna. Typical values of the CPV reaches up to 500 mm. The RMS of patterns resulting from multiple calibrations are 80 mm for Galileo C1X and 48 mm for GPS C1C.
U2 - 10.15488/5233
DO - 10.15488/5233
M3 - Poster
T2 - Galileo Science Colloquium
Y2 - 4 September 2019 through 6 September 2019
ER -