TY  - JOUR
U1  - Zeitschriftenartikel, wissenschaftlich - begutachtet (reviewed)
A1  - Pany, Thomas
A1  - Falk, Nico
A1  - Riedl, Bernhard
A1  - Stöber, Carsten
A1  - Winkel, Jón O.
A1  - Schimpl, Franz-Josef
T1  - Innovation: Under Cover: Synthetic-Aperture GNSS Signal Processing
JF  - GPS World
N2  - Researchers are developing new GNSS receivers and antennas based on an innovative signal-processing scheme to significantly improve GNSS tracking reliability and accuracy under degraded signal conditions. It is based on the principles of synthetic-aperture radar. Like in a multi-antenna phased array receiver, GNSS signals from different spatial locations are combined coherently forming an optimized synthetic antenna-gain pattern. The method is implemented in a real-time PC-based software receiver and works with GPS, GLONASS, and Galileo signals. Multiple frequencies are generally supported. The idea of synthetic-aperture processing is realized as a coherent summation of correlation values of each satellite over the so-called beamforming interval. Each correlation value is multiplied with a phase factor. For example, the phase factor can be chosen to compensate for the relative antenna motion over the beam-forming interval and the resulting sum of the scaled correlation values represents a coherent correlation value maximizing the line of sight signal power.
KW  - GNSS
KW  - Signaltechnik
KW  - Apertur
Y1  - 2013
UR  - https://www.gpsworld.com/innovation-under-cover-synthetic-aperture-gnss-signal-processing/
SN  - 1048-5104
SS  - 1048-5104
VL  - 24
IS  - 9
SP  - 42
EP  - 50
ER  -