Title :
Antenna phase center effects and measurements in GNSS ranging applications
Author :
Kunysz, Waldemar
Author_Institution :
Schulich Sch. of Eng., Electromagn. Group, Univ. of Calgary, Calgary, AB, Canada
Abstract :
Antenna phase center offset (PCO) location and phase center variation (PCV) play an important role in high-precision GNSS ranging applications that use carrier-phase measurements. For ranging systems that use CDMA code-phase measurements, other statistics play a similar role - antenna group delay center offset (GDCO) and group delay variation (GDV). This paper describes the methods of how to measure and compute these statistics based on amplitude and phase pattern measured for a given antenna. A susceptibility analysis of these statistics versus multipath and antenna design parameters is also made. Practical examples on how to deal with undesired movement of PCO or larger variation of PCV is presented as well.
Keywords :
antennas; code division multiple access; satellite navigation; CDMA code-phase measurements; GNSS ranging applications; antenna phase center effects; antenna phase center offset location; carrier-phase measurements; group delay center offset; group delay variation; phase center variation; Antenna measurements; Delay; Global Navigation Satellite Systems; Phase measurement; Reflection; Reflector antennas; GNSS antenna; group delay center; multipath; phase center; phase center offset (PCO); phase center variation (PCV);
Conference_Titel :
Antenna Technology and Applied Electromagnetics & the American Electromagnetics Conference (ANTEM-AMEREM), 2010 14th International Symposium on
Conference_Location :
Ottawa, ON
Print_ISBN :
978-1-4244-5049-7
Electronic_ISBN :
978-1-4244-5050-3
DOI :
10.1109/ANTEM.2010.5552519
