We have received several inquiries about the new L2C signal recently
incorporated into the payload of GPS 2R-M1 satellites. Detailed information
is available in the following article:
L5 and Rorschach Shock ... I am sure that many of you remember Colonel Mark Crews when he served with distinction as the chief engineer for the GPS Wing at the Space and Missile Systems Center. ... After you read what Dr. Crews has to say about the L5 payload, I will launch into an issue concerning user equipment that has been on mind for sometime. ... (sci.geo.satellite-nav)
Re: GPS maybe be dead soon ... It is uncertain whether the Air Force will be able to acquire new ...satellites in time to maintain current GPS service without interruption. ... The United States Government Accountability Office issued on May 7 an alarming report on the future of GPS, characterizing ongoing modernization efforts as shaky. ... (sci.physics)
Re: L2C and other signals ... I am wondering whether the new gps signals will replace the oldies. ... what's the critical number of l2c transmiting satellites for seeing ... After 2020, legacy dual frequency receivers may still work, but the DoD would no longer assure that Ppower levels and the navigation message would remain the same. ... Just the United States CORS (Continually Operating Reference Stations) network alone comprises more than 1,000 receivers. ... (sci.geo.satellite-nav)
Nine GPS Satellites May Fail in the Next 20 Months! ... disparity over the "official" number of GPS satellites.... Wing is predicting that as many as nine GPS series IIA satellites may ... "The GPS constellation consists of 24 satellites ... Indeed, to answer yet another common question, PDOP is ... (sci.geo.satellite-nav)
Re: OT: warm this ... ATM's, food preservation, communication etc. ... we rely less and less upon satellites as time goes on. ... few $10,000 instrumentation GPS receivers we got along perfectly well ... a solar superflare would be a severe inconvenience. ... (rec.music.classical.guitar)
