[time-nuts] Satelles PNT from Iridium satellites

[John Maxwell]

On 08/09/2020 09:33:07 PM, Taka Kamiya via time-nuts wrote:
[snip]
> On more broader sense, was GPS originally designed to provide timing
> service?  Or is it a byproduct of needing to measure location and
> speed, thus it needed a constant signal, and that using it to sync
> reference signal is just an ancillary and after-thought use cases?

A little of both. The desire on the customer's part (i.e., what the US
military wanted) was accurate rapidly updatable location information.
But the approach used for GPS also required the receiver to precisely
compute the time as well.

So, it wasn't in the requirements, but it is inherent in the design.

-John

--
John Maxwell  KB3VLL  jmax at jmaxhome.com