I did - and still not sure what you'r asking!

Do you mean:

1. Make a position reading at 'A';
2. pick up your GPS, take it to 'B';
3. make another position reading at 'B';
4. from those 2 readings, compute distance & heading from 'A' to 'B'


It could happen between successive readings - the (minimum) time between successive readings depends on (the configuration of) your GPS receiver.


Your GPS receiver may have "filtering" algorithms to filter the jitter - and may have various options on the filters optimised for "pedestrian" or "vehicle" use, etc,...