Re: It Could Be Made to Work ???
I think this was discussed in an earlier post.
It can work fine - provided they have approriate transmitters.... They dont even need 4 atomic clocks, really, if there are enough of them, with some basestations to provide synchronization..
The gps sats we use today are so expensive because they have a decade design life, are in high orbit, and have to work - there are only 24 operational - but they have a wide area effect each (usually 8 or so can be seen). In LEO, there may be up to 80 in orbit and active for GPS duties at any one time- that improves accuracy round skyscrapers etc - and high latitudes (above 60 degrees, GPS starts to drop efefctiveness) - where traditional gps doesnt work
Signal strength in LEO could also be useful for blocking Chinese russian or US gps analogues (if tensions are ongoing in a particular theatre) - and the shear number provides resilience against anti satellite shenanigans....
WHo knows for sure what the future requirements could be?