000167703 001__ 167703
000167703 005__ 20190416055803.0
000167703 037__ $$aCONF
000167703 245__ $$aA Galileo E1b,c RF Front-End Optimized for Narrowband Interferers Mitigation
000167703 269__ $$a2006
000167703 260__ $$c2006
000167703 336__ $$aConference Papers
000167703 520__ $$aThe current Search and Rescue (SAR) service, which is based on the Cospas-Sarsat system, suffers from major limitations such as poor position accuracy, long alert times and high false alarm rate. Two types of distress signals are used, the first 121.5MHz/(up to 100mW) and the second 406MHz/5W, the latter being able to carry digitally encoded identification and position data. The Galileo system will importantly contribute to the improvement of the SAR system. Indeed, the Galileo satellites will include a transponder in order to re-broadcast the 406MHz message, which will allow a better coverage (27 Galileo satellites plus the current seven Cospas-Sarsat satellites) and also a shorter alert time. They will also include a return link message (RLM) in the Galileo E1b open service signal, which will reduce the number of false alarms. The Galileo system is therefore a great opportunity for the development of a new generation of beacons which will include a Galileo receiver and therefore be able to take advantage of the better coverage provided by the Galileo constellation to provide shorter alert times and of the RLM to reduce the number of false alarms. One of the major issue when designing a Galileo receiver to be operated in a distess beacon is to design a front-end that is sensitive enough to pick the very weak Galileo signals and on the same time rejects the strong distress messages. Indeed, when the beacon is turned on, the Galileo receiver is in cold start conditions and a short amount of time is left to the receiver to get a first fix before any distress message is actually emitted. However, in some cases, the receiver is not able to determine its position sufficiently fast and the front-end therefore has to acquire the satellites in the presence of the distress signals. This paper presents a Galileo radio frequency front-end designed in order to operate in the presence of such signals.
000167703 700__ $$aChastellain, Frédéric
000167703 700__ $$0243672$$g190010$$aBotteron, Cyril
000167703 700__ $$aWaelchli, Grégoire
000167703 700__ $$0242869$$g176858$$aZamuner, Giuseppe
000167703 700__ $$0242854$$g183509$$aManetti, Davide
000167703 700__ $$aFarine, Pierre-André$$g152066$$0243688
000167703 700__ $$aBrault, Patrice
000167703 7112_ $$dSeptember 26-29, 2006$$cForth Worth, Texas, USA$$aInternational Technical Meeting of the Institute of Navigation Satellite Division (ION GNSS 2006)
000167703 773__ $$tProceedings of the International Technical Meeting of the Institute of Navigation Satellite Division (ION GNSS 2006)$$q2069-1075
000167703 8564_ $$uhttps://infoscience.epfl.ch/record/167703/files/FCh_2006.pdf$$zn/a$$s725421$$yn/a
000167703 909C0 $$xU11964$$0252263$$pESPLAB
000167703 909C0 $$pLPM$$0252100
000167703 909CO $$qGLOBAL_SET$$pconf$$pSTI$$ooai:infoscience.tind.io:167703
000167703 917Z8 $$x190089
000167703 917Z8 $$x190089
000167703 917Z8 $$x190089
000167703 937__ $$aEPFL-CONF-167703
000167703 973__ $$rREVIEWED$$sPUBLISHED$$aOTHER
000167703 980__ $$aCONF