Innovation: Under Cover: Synthetic-Aperture GNSS Signal Processing

  • 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 anResearchers 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.show moreshow less

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Metadaten
Author:Thomas Pany, Nico Falk, Bernhard Riedl, Carsten Stöber, Jón O. Winkel, Franz-Josef Schimpl
Contributor(s):Richard Langley
Year of Publication:2013
Language:English
GND Keyword:Apertur; GNSS; Signaltechnik
Parent Title (English):GPS World
Volume:24
Issue:9
ISSN:1048-5104
First Page:42
Last Page:50
Document Type:Article (reviewed)
Institutes:Hochschule Offenburg / Bibliografie
Acces Right:Frei zugänglich
Release Date:2019/10/29
Licence (German):License LogoEs gilt das UrhG
URL:https://www.gpsworld.com/innovation-under-cover-synthetic-aperture-gnss-signal-processing/
URL:https://www.researchgate.net/publication/270285468_Innovation_Under_Cover_Synthetic-Aperture_GNSS_Signal_Processing