On Monday, 16 January, at about 02:18 UTC, the second of the two Galileo In-Orbit Validation (IOV) satellites, FM2 (Flight Model 2) also known as GSAT0102, started transmitting navigation signals on the L1/E1 frequency using the E12 ranging code, according to tracking reports from the COoperative Network for GIOVE Observation (CONGO).
Europe’s first Galileo satellite appears to be functioning as expected, transmitting test signals received by the European Space Agency’s ground station in Redu, Belgium, across the whole of its assigned radio spectrum, ESA reports. The first two Galileo satellites were launched by Soyuz from Europe’s Spaceport in French Guiana on October 21. They are currently in the midst of a rigorous campaign to check that their highly sophisticated navigation payloads are operating as planned, unaffected by the strains of launch.
Signal Characteristics of Civil GPS JammersGPS jamming is a continuing threat. A detailed understanding of how the available jammers work is necessary to judge their effectiveness and limitations. A team of researchers from Cornell University and the University of Texas at Austin reports on their analyses of the signal properties of 18 commercially available GPS jammers.
Disruption created by intentional generation of fake GPS signals could have serious economic consequences. This article discusses how typical civil GPS receivers respond to an advanced civil GPS spoofing attack, and four techniques to counter such attacks: spread-spectrum security codes, navigation message authentication, dual-receiver correlation of military signals, and vestigial signal defense. Unfortunately, any kind of anti-spoofing, however necessary, is a tough sell.
GMV, one of the world’s leading companies in satellite navigation systems, announced the tracking of both data and pilot channels of Galileo first satellite signal with its own line of GNSS receiver products. The first two Galileo satellites were launched from Kouru Spaceport in French Guiana on October 21st and are now in in-orbit test campaign. The Galileo PRN 11 started transmitting the first navigation signal last Saturday.
This article gives a brief overview of the acquisition and tracking of Galileo IOV signals received from the GSAT0101 satellite on the morning of December 15. Researchers in the PLAN Group successfully recorded E1 and E5 data using a single dual-channel front-end and subsequently acquired and tracked E1 B/C, E5a and E5b signals using the PLAN Group GSNRx software GNSS receiver.
The Galileo PFM IOV satellite (GSAT0101) began transmitting E5 signals early on December 14. It had already started airing E1 signals on December 10.
The transmitting Galileo satellite is PFM, the ProtoFlight Model (GSAT0101). The FM2 (Flight Model 2) satellite (GSAT0102) has not yet started transmitting navigation signals.
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