In this paper we evaluate suitability of several array processing methods for adaptively canceling interfering signals present in radio astronomy. The issue of signal corruption by orbital satellite downlink signals, such as from GLONASS and IRIDIUM, is addressed. Simulation and real data analysis of the achievable SINR improvement and beam mainlobe distortion for five candidate algorithms is p...

Aiden Morrison is a PhD candidate in the Position, Location, and Navigation (PLAN) Group, Department of Geomatics Engineering Schulich School of Engineering at the University of Calgary, where he has been involved with hardware design projects, and has developed a software defined GPS/GLONASS receiver. He completed his BEng in electrical engineering at Ryerson University, Toronto, in 2006. His ...

Prof. Dr. Guenter W. Hein is Full Professor and Director of the Institute of Geodesy and Navigation at the University of Federal Armed Forces Munich. He is responsible for research and teaching in the field of highprecision GPS/GLONASS positioning, navigation physical geodesy, gravimetry and satellite geodesy. He works in the field of GPS since 1984 and is author of numerous papers on static an...

• The combination of signals planned to be available for civil use from the U.S.'s Global Positioning System (GPS) and the former U.S.S.R.'s GLONASS system offers the promise of an accurate and economical sole-means navigation system for civil aviation. An FAA-sponsored program at Lincoln Laboratory has examined the technical issues associated with the integrated use of the two autonomous syste...

This article presents signal processing algorithms used as a new remote sensing tool, that is passive bistatic SAR with navigation satellites (e.g. GPS, GLONASS or Galileo) as transmitters of opportunity. Signal synchronisation and image formation algorithms are described for two system variants: one where the receiver is moving and one where it is fixed on the ground. The applicability and fun...

I will discuss how time and frequency information can be distributed using satellites. I will focus on using the signals transmitted by the US global positioning system satellites, but I will also discuss other satellite-based systems such as the Russian GLONASS system, the proposed European Galileo System and two-way satellite time transfer, which uses active ground stations that communicate w...