Surveying -- HOW TO GPS -- how it works GPS -- Garmin 12

GPS Tutorial http://trimble.com/gps/ go to site

The Garmin 12 GPS Change windows Use to scroll and for keying Confirm TURN ON Get back to a point

4 important pieces of data Nav Error First page up…. The satillite 4 important pieces of data It’s signal

Once you have a fix Where you are Your elevation (flaky) Are you moving? Your elevation (flaky) Where you are Are you late?

Enter a point Page to a list Highlight “waypoint” Hit enter Select and hit “new” Name waypoint Add coordinates Select and hit “done”

Getting back to where you started Check Distance Hit GOTO Pick a Waypoint Follow the arrow Monitor Speed

CRUDE Where you are... Zoom in or out Scale

GPS Accuracy Non-corrected 5-30 m Beacon-corrected 1 m Radio-corrected cms Post-processed dm to m

Real Time beacon correction for lake cores and bathymetry

Differential GPS for precision surveying of river terraces and alluvial fans

Cm-scale maps of desert surfaces