garmin 76s and spectrometer use in the field. before using a gps to collect data set up gps with...
Post on 03-Jan-2016
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Before Using a GPS to Collect Data
• Set up GPS with correct: – Map Datum – WGS 84– Location Format – Decimal Degrees– Time Zone– Distance and other units (feet or meters)
• Think about what data you will collect and how you will name and record it– This unit is a simple unit and you will have to have a
“log book” to go along with it to keep track of attributes for each waypoint
Activating Unit the First Time – Go outdoors 1. Turn on unit - press
red “light bulb” button
2. When “Accept” screen comes on press Page key to accept
3. Leave unit on as it acquires satellites and finds a location
4. Note number of satellites and regions of sky they are in
Setting Up Data Collection Properties 1) Press “Menu” 2) Use Toggle wheel
and highlight Setup Map
3) Press Enter
Note there are Menu Tabs that you will go through to set up the unit:
1)You may want to go back and customize some of these later2)Use Toggle Wheel and Enter button to move from Tab to Tab or within a Tab – Press Enter to select the item to change, then Toggle to correct option and press Enter again
Location is a VERY important Tab1) Change Location
Format to Decimal Degrees – hddd.ddddd
2) Map Datum – WGS 84
Collecting a Waypoint1) Press and hold down Menu
button2) Use “toggle wheel” to move
to name of this Waypoint which is 001
3) Press Enter4) Use toggle wheel on each
letter to select a name for the location.
5) Press Enter when you have toggled to correct letter
6) When finished use toggle wheel to go to “OK” and then Press Enter
That waypoint will now be named in your Units memory.
Saturday Field Trip
• We will collect waypoints at several SHORT stops on our way to Padre Island. Please be sure you do this at each stop and then write a short description for your Log Book
• We will be spending the major part of our time collecting field data on vegetation density in one location on Padre Island– This will include creating a “30 x 30” and a “60 x
60” meter test area
Back in the Lab - Monday
• BRING your GPS to the Lab – We will download your field trip data and create a
simple map on top of the Corpus Christi remote sensed image.
• Look at your notes on spectral signatures and look at the location and size of the “pixel” you created with your GPS points.
• Does your spectral data concur with your visualization from the image of Padre Island?
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