thus the actual stability is probably even better.
In contrast to the transmitter clocks, the corrections for
the receiver clock in point positioning have to be determined
by the user. Usually, this is done by estimating an
additional parameter for every observation epoch that
accounts for the synchronization error. That way even
low quality clocks can be employed at the receiver side.
In fact, one of the major advantages of today’s GNSS
architecture is the possibility to use small and inexpensive
quartz crystal oscillators in the receivers.