GPS World, February 2017
FEBRUARY 2017 A diversely polarized antenna array combines signal processing in the spatial and polarization domains for significant improvement in receiver robustness against interference The C N 0 of line of sight components is improved since the receiver can use the power present in the left hand circularly polarized channels and also interference mitigation improves 43 OEM 44 SURVEY MAPPING 46 UAV 47 TRANSPORTATION 55 OEM 57 SURVEY 59 MAPPING 60 TRANSPORTATION 62 UAV FEBRUARY 2017 WWW GPSWORLD COM GPS WORLD 3 OPINIONS AND DEPARTMENTS 4 ONLINE NOW 6 OUT IN FRONT Robots Afield 8 TAKING POSITION GPS for the Rest of Us 8 EXPERT OPINIONS What is the potential for LEOs to augment services provided by the four MEO GNSS 10 SYSTEM OF SYSTEMS FCC Seeks Comments on Galileo Use in US Power Increase Tested on 19 GPS II Satellites OCX Passes Qualification Tests Clocks Fail on 5 Galileo Satellites All Have Backup 14 PNT ROUNDUP DARPA Advances on Many Alt Fronts Gone Up First Batch of Iridium NEXT 73 RESEARCH ONLINE 73 AD INDEX 74 SEEN HEARD VOL 28 NO 2 GPSWORLD COM COV E R S TORY 48 TRACKING RFI Interference Localization Using a CRPA A controlled radiation pattern antenna can preserve GNSS positioning while providing at least an azimuth angle towards an interference source If integrated with an attitude and heading reference system only a few lines of position pointing towards the RFI source could provide a fast indication of the probable ground location BY Gerhard E Berz Pascal Barret Brent Disselkoen Michael Richard Vincent Rocchia Florence Jacolot Todd Bigham and Okko F Bleeker LAUNCHPAD MARKET WATCH UPDATES 63 MOBILE 64 DEFENSE 65 MACHINE CONTROL 66 DOUBLE TAKE Mitigating Interference with a Dual Polarized Antenna Array by Matteo Sgammini Stefano Caizzone Achim Hornbostel and Michael Meurer SPECIAL 24 PAGE INSERT following page 18 S1 2017 ANTENNA SURVEY The only authoritative industry resource for GNSS antennas furnishes detailed design and performance specifications for more than 377 models from 31 companies SPONSORED BY
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