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2 GPS Surveying GPS -- how it works GPS -- Garmin 12

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

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5 Trilateration and a 4 th for timing

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

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

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

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

10 Differential GPS for precision surveying of river terraces and alluvial fans

11 Crash Course in Surveying With an Auto Level:

12 :( (: 1 First thing first: Gotta level the it

13 CENTER LINE - ELEVATION  BOTTOM = DISTANCE TOP = DISTANCE 1

14 1 The Auto Level: The Instrument And Tripod The Stadia Rod Or Surveyor’s Staff = l (m) * 100 (m)

15 How to read the Stadia Rod: 11 meters on the dot 10.8 meters on the dot Each Black Rectangle = 1 cm Same for Each white one So what’s this height? 10.66 meters

16 What you’ll see through the eyepiece: Stadia Lines Height = 10.85 m Top Stadia = 10.91 m Bottom Stadia = 10.79 m To Get Distance Away: 1)(Top - Bottom Stadia) = 0.12 m 2) Multiply difference by 100: Distance = 12 meters

17 1 For your X-section, be sure to get any Major changes in slope Distance Height (X, Y)

18 How to collect the data: NOTE: When shooting features off your line, you will also need a bearing

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21 Side-Scan LiDAR: GeoArcheology

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23 “Project North” is at the white house, And that is BM1 Figure out appropriate scale for x: 1 box = 1 meter? 10 meters? You want your entire survey to fit! Same scale as x-axis BM 1 BM 2 BM 3 BM 4 PN