{Small, cheap, low-power} x {SpaceX launch capacity} == highly redundant and very resilient GPS equivalent?
This thing is sufficiently small, low-power, and low-cost to use in something like StarLink sats, and it's accuracy is advertised as "±5.0E-11 accuracy at shipment", compared to about ~3e-15 or so for cesium clocks. With 30k+ StarLink sats in orbit one might be able to see enough sats overhead to provide comparable accuracy on the ground as GPS (but I've not done the math).
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{Small, cheap, low-power} x {SpaceX launch capacity} == highly redundant and very resilient GPS equivalent?
This thing is sufficiently small, low-power, and low-cost to use in something like StarLink sats, and it's accuracy is advertised as "±5.0E-11 accuracy at shipment", compared to about ~3e-15 or so for cesium clocks. With 30k+ StarLink sats in orbit one might be able to see enough sats overhead to provide comparable accuracy on the ground as GPS (but I've not done the math).