But wait. What is the GPS constellation goes down? THEN we have bigger problems :) --------------------------------------------------
What if the US military intentionally messes with the signal to thwart the advances of an enemy who is using GPS in their attack? ;-)
--- mel@beckman.org wrote: Enemies aren’t dependent on US GPS, by the way. lol! ----------------------------------------------- Oops, but still from the second link: "...which could be disabled or degraded by their operators at any time" Most big countries say the same: "...will provide an alternative global navigation satellite system..." scott Details for the intrested. https://en.wikipedia.org/wiki/GLONASS "Russian...provides an alternative to GPS and is the second navigational system in operation with global coverage and of comparable precision. https://en.wikipedia.org/wiki/Galileo_(satellite_navigation) "...live in 2016,[4] created by the European Union" "...so European nations do not have to rely on the U.S. GPS, or the Russian GLONASS systems, which could be disabled or degraded by their operators at any time" https://en.wikipedia.org/wiki/BeiDou "a Chinese satellite navigation system....Beidou-1 was decommissioned at the end of 2012." "BeiDou-2, became operational in China in December 2011 with a partial constellation of 10 satellites in orbit. Since December 2012, it has been offering services to customers in the Asia-Pacific region." "In 2015, China started the build-up of the third generation BeiDou system (BeiDou-3) for global coverage constellation. The first BDS-3 satellite was launched on 30 March 2015.[5] As of October 2018, fifteen BDS-3 satellites have been launched[6]. BeiDou-3 will eventually consist of 35 satellites and is expected to provide global services upon completion in 2020. When fully completed, BeiDou will provide an alternative global navigation satellite system to the United States owned Global Positioning System (GPS),[7][8] the Russian GLONASS or European Galileo systems and is expected to be more accurate than these https://en.wikipedia.org/wiki/Indian_Regional_Navigation_Satellite_System "...is an autonomous regional satellite navigation system that provides accurate real-time positioning and timing services.[4] It covers India and a region extending 1,500 km (930 mi) around it, with plans for further extension." https://en.wikipedia.org/wiki/Quasi-Zenith_Satellite_System "...a project of the Japanese government for the development of a four-satellite regional time transfer system and a satellite-based augmentation system for the United States operated Global Positioning System (GPS) to be receivable in the Asia-Oceania regions, with a focus on Japan.