How much daily human input is needed to keep GPS satellites and service operational?
I’m wondering if in the event of a massive natural disaster or disease pandemic how long would your basic handheld GPS unit still be functional. And also how would this affect cell phones or are they totally separate.
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1) cell phones usually get assistance via the wireless network, so they may be challenged in acquiring GPS satellites
2) how long will GPS still work? accurately about 1/2 year – after a few days, the satellite constellation works without ground support – if things are in pandemic state, other issues will be more important – just think about what means you will need to protect your food supply from your hungry neighbors daSVgrouch