GPS/GIS 4-H:USING THE GLOBAL POSITIONING SYSTEM IN 4-H PROGRAMMING

But we are going to start by going Old School for a just a little while

GEAR-TECH-21

Camp 1.0 Activity

Reading a Paper Map

Let’s take a look at those maps you created when you first came in today…..

Draw a Map of Where you Are.

Reading a Paper Map

• What kinds of Maps are there?• Did you use any symbols?• Did you draw things to scale?• Is your map small scale or large scale?• What was the purpose of your map?

Now let’s take a look at a variety of commercial maps created for many different purposes…

What do they have in common?

Maps are not all created equalMaps for your own purpose can suit your needs…..but when you are communicating with a larger audience or publishing it:

– Maps need some basic components• A title• A North Arrow to indicate map orientation• Scale bar to measure distance• Source discloses the author and data source• Legend describes meaning of symbols and

colors• Labels have names for geographic features• Geographic features represented by colors,

drawings or symbols

There are basically 2 kinds of maps

• General reference maps– Color or other symbols are typically related to

physical geographic objects familiar to the public such as roads, river and cities

• Thematic Maps– Have key information is related to information

associated with given property or data layer ..they represent a specific theme such as land ownership..with private and public lands in different colors or population density

GEAR-TECH-21

Camp 1.0 Activity

Direction

Direction

• Direction is Relative• Equator-Divides North and South• Prime Meridian-Divides East and West• Heading• Bearing• The Basic Direction Device

– the Magnetic Compass

The Magnetic Compass

• The Parts

How have you encountered GPS and GIS Mapping?

GPS and GIS Mapping are daily encounters for many…

• Smart Phone Apps depend on GPS and display GIS Mapping

• In our autos• While out Fishing or Hunting• While out Farming• While out Hiking• Just for fun or adventure-Geocaching

and Earthcaching

SOME GPS APPLICATIONS

• MILITARY• MARITIME • AUTOMOTIVE• SURVEYING• AVIATION• FORESTRY• ENVIRONMENTAL• PUBLIC SAFETY• ETC.

• HIKING• HUNTING • NATURE STUDY• FISHING• BOATING• BIKING• SKIING• SNOWMOBILING• GEOCACHING• GOLF ! ETC.

COMMERCE & GOVERNMENT

RECREATIONAL

HOW CAN WE UTILIZE GPS IN 4-H PROGRAMMING?EDUCATIONAL & OPERATIONAL USES

HUNTER EDUCATION

WILDLIFE MAPPING

HIGH ADVENTURE

TRIP PLANNING & SAFETY

SEARCH & RESCUE

LEADER TRAINING

FISHING & CANOEINGENVIRONMENTAL EDUCATION

BIG TREE SEARCHSCIENCE & TECHNOLOGY

AND LOTS MORE !

From GPS Land Navigation by Michael Ferguson

THE GPS SATELLITE CONSTELLATION

Global Positioning System

A network of satellites that continuously transmit coded information, which makes it possible to precisely identify locations on earth by measuring distance from the satellites.

GPS is short for Global Positioning System which is "a network of satellites that continuously transmit coded information, which makes it possible to precisely identify locations on earth by measuring distance from the satellites". Of course, many users also refer to their hand-held GPS receivers as "my GPS" ... as in the statement "my GPS' batteries went dead and I got lost!" GIS is short for Geographic Information System(s). "In the strictest sense, a GIS is a computer system capable of assembling, storing, manipulating, and displaying geographically referenced information , i.e. data identified according to their locations. Practitioners also regard the total GIS as including operating personnel and the data that go into the system" ( from: http://www.usgs.gov/research/gis/title.html ).

GPS and GIS DEFINITIONS

from GPS Land Navigation by Michael Ferguson

The NAVSTAR System

24 Satellites 6 orbital plates 11,000 miles up 12 hour orbit

from GPS Land Navigation by Michael Ferguson

LINE OF SIGHT

ERROR SOURCES Multipath interference Atmospheric Geometric DOP Clock Ephemeris S.A. (now turned off)

BASIC NAVIGATION INFORMATION PROVIDED BY GPS UNITS . . .

YOUR CURRENT POSITION• COORDINATES (LATITUDE & LONGITUDE, UTM, MGRS, ETC.)• ELEVATION (0R BETWEEN WAYPOINTS)

DIRECTION TO SPECIFIED WAYPOINTS

DISTANCE TO SPECIFIED WAYPOINTS (0R BETWEEN WAYPOINTS

YOUR SPEED OF TRAVELYOUR DIRECTION OF TRAVEL

. . . AND OFTEN MUCH MOREMAPS

TIME OF DAY

CROSS TRACK ERROR

ESTIMATED TIME OF ARRIVAL

ESTIMATED TIME ENROUTE

COORDINATES OF CITIES & TOWNS

Best time for Fishing and Hunting

Let’s Get our Hands on GPS!

• Each of you will get a Yellow Garmin E-Trex to work with

USING

THE

GARMIN

eTrex

SPEED

TRIP ODOMETER

TRIP TIME

SUNSET

SUNRISE

LOCATION

ELEVATION

BEARING

HEADING

MAX SPEED

AVERAGE SPEED

Trilaterion and Space

• Trilateration Activity UP and GOING• Trilateration Activity with a boy lost

Lets go set some waypoints!

• Each team set five waypoints and then exchange a GPS unit with another team

• See if they can find the each of your waypoints

• Each team will stash one Geocache and then share exchange GPS units with another team to see if you can find theirs

• Collect a ping pong ball from each

We’re Back…..

• Let’s put that data to good use• Import your waypoints into Easy GPS

The 411 for 911S.U.M.O Community Service Project 2011

“WE SAVE LIVES”

USM

O

THE PROBLEM:• When firefighters go out on an emergency

call they might have trouble finding the exact location of the fire hydrant.

THE SOLUTION:• Our IT team mapped out the location of

fire hydrants in the communities of Missouri Valley, Magnolia, and Pisgah using GPS units.

• This allows Firefighters to access the hydrants quickly and put out fires more effectively. In retrospect…. “WE SAVE LIVES.”

THE PROCESS:The GPS Unit

• We got in contact with the head of the Harrison County GIS, Jeremy Butrick.

• He provided us two of these units and he trained us on how GPS works and how to use these units for accuracy and gave us assistance with his software to import the waypoints and transfer them to a GIS map that Harrison County Emergency Services would use in guiding firemen to the closest hydrants.

How it Works:

• There are always many satellites in motion above our heads.

• A maximum of 13 satellites at any given time are within range to communicate with our device, but only 4-5 are needed to record its location.

• At the push of a button, this device uses those satellites to mark its position.

• Due to cloud coverage, wind, sound wave reflection, and blockage from objects, the reading given by one of these units can be off by up to 6 feet. To counter this, the GPS unit takes a minimum of 20 readings, about one a second, to get an accurate average.

How We Did It:• We picked two days that would have the best

satellite coverage for our big town, Missouri Valley and our two small towns, Pisgah and Magnolia.

• We went around finding all of the fire hydrants and recording their locations.

• Jeremy took the GPS Units and hooked them up to his computer.

• The computer took the points we recorded and averaged every point out.

• The points were then put on to pre-existing GIS maps of the towns for Harrison County Emergency Services and the 911 Center to use in helping firefighters know where the closet hydrants are to a location.

4-H GPS/GIS Resources

• GEAR-TECH-21 Curriculum Website– http://4hset.unl.edu/4hdrupal/ or Google GEAR-TECH-21

• 4-H GIS/GPS Facebook Page– http://www.facebook.com/4hgisgps

• 4-H Geospatial Programming Resources– http://www1.cyfernet.org/prog/gis/gis.html

• 4-H GISGPS Email Distribution List– http://www1.cyfernet.org/prog/gis/4hgisgps.html– Join this online community and get lots of 4-H GPS/GIS

connections, projects, learn about grants, opportunities

4-H GPS/GIS Resources

• Virginia 4-H GPS/GIS Resources– http://www.4-h.ext.vt.edu/programs/nree/gpsgis/index.html

• eXtension Geospatial Technology Community– http://www.extension.org/pages/9608/mapsyst-community-page

THE END