GNSS receiver calculation of time

[Goldenrivett]

Originally Posted by balsa model

Can a half-arsed method of picking time from a randomly chosen satellite and then using it to complete the work of triangulation / tetrahedrongulation / hyper-tetrahedrongulation?

No.
In a nutshell, the receiver looks at incoming signals from four or more satellites and gauges its own inaccuracy. In other words, there is only one value for the "current time" that the receiver can use. The correct time value will cause all of the signals that the receiver is receiving to align at a single point in space. That time value is the time value held by the atomic clocks in all of the satellites. So the receiver sets its clock to that time value, and it then has the same time value that all the atomic clocks in all of the satellites have. The GPS receiver gets atomic clock accuracy "for free."
https://electronics.howstuffworks.co...ravel/gps3.htm