Global Positioning System (GPS) Presenters: Dean & Nanci Terencio Phone: Cells: Nanci Dean Feb. 13, 20, 27 10:45am – 12:00pm
What a GPS unit can do for YOU! Location: Your latitude and longitude (lat, lon) Find you camp/game Plan a trip Store waypoints Return back the way in Find distance Man over board Altitude Many uses Does NOT replace map or compass
Global Positioning System (GPS) Constellation of 24 active GPS satellites plus 8 spare Medium earth orbit (12,550 miles) GPS receivers 4
U.S. GPS History 1984 GPS project initiated 1994 GPS constellation completed 2000 Selective Availability (SA) Turned off U.S. Air Force runs the system
Satellites Total satellites 2,271 Russia 1,324 USA 658 Million of pieces of debris and space junk Military and civilian earth observation, communications, navigation, weather, research and more 6
Location Low Earth Orbit (LEO) 1,240m Medium Earth Orbit (MEO) 22,236m High Earth Orbit (HEO) above 22,236m 7
Selecting a GPS Unit how used cost size/weight keyboard size power source AC/DC screen size - color/bw base map interface jack/antenna waterproof/water resistance internal memory user friendly manual extra bells and whistles 9
GPS Levels
Location
W EN S Latitude and Longitude
GPS Fix Satellites You are her e Earth
Coordinates (1) Decimal Degrees lat 61º11’ 18.95” N log 149º 55.54” W Degrees, Decimal, minutes lat 61º11.317’ N log 149º ’ W 14
Coordinates (2) Decimal Degrees lat º log º Universal Transverse Mercator (UTM) m N 6V mE 15
map datum A reference to which measurements are related. Hundreds of datum's WGS 84, 72, NAD 83, 27 16
World Datums
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Global Positioning System (GPS) Presenters: Dean & Nanci Terencio Phone: Cells: Nanci Dean Feb. 13, 20, 27 10:45am – 12:00pm X
Todays Discussion Starting up the GPS Find Menu Waypoints Routes Tracks Class Field Exercise
GPS Face
Satellite Page Some show battery life “D” Differential Number of satillites
GPS Sky View
Accuracy Distractors
Main Page
System Setup
Unit Setup
Position Format Hddd 0 mm.mmm’ = 061 o ’ Hddd.ddddd o = o Hddd o mm’ss.s” = 061 o 32’ 43.25”
Time Setup
Coordinated Universal Time (UTC) 24 time zones 15 degrees longitude
Make Waypoints Mark while on location Map page Enter Coordinates
Waypoint Page
Routes Waypoints Waypoint list WP Route List R1 R3 R2 R1 R2 R3 Waypoint Cycle
Making TrackPoints Sort of like a route Hansel and Gretel Continuous marking
Track Log Setup
Track Log
Tracking Map
TrackPoints vs WayPoints
Class Exercise
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