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Data Collection and Management with GPS & GIS

Data Collection and Management with GPS & GIS. Quentin Rund for the High Desert ESD. Logistics. Daily schedule Start Lunch Finish Facilities Refreshments and break area Restrooms Telephones and messages Feedback. Teaching methods. Lectures Exercises Demonstrations Class materials

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Data Collection and Management with GPS & GIS

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  1. Data Collection and Management with GPS & GIS Quentin Rund for the High Desert ESD

  2. Logistics • Daily schedule • Start • Lunch • Finish • Facilities • Refreshments and break area • Restrooms • Telephones and messages • Feedback Getting to Know ArcGIS

  3. Teaching methods • Lectures • Exercises • Demonstrations • Class materials • Getting to Know ArcGIS Exercise book • Course CD • Lecture Notes Getting to Know ArcGIS

  4. Topics covered in Getting to Know ArcGIS • Day One • Getting to know GIS • Getting started with maps and data • Displaying data • Day Two • Getting information about features • Analyzing feature relationships • Day Three • Creating and editing data • Presenting data Getting to Know ArcGIS

  5. Workshop Agenda Day One Day Two Getting to know ArcGIS Add data layers to GIS Working with tables Editing data Symbolizing Data GIS analysis Discussion of GIS in the classroom • Intro to Precision Ag • Determining Location • Navigating Waypoints • Collecting Waypoints • About Attributes • Data Layers

  6. Me Quentin Rund PAQ Interactive GIS since 1994 Remote Sensing GIS data analysis Farm background

  7. Workshop Effectiveness • Pre-Test • Gauge knowledge • Establish baseline • Post Test • See if improved (awake) • Evaluate methods

  8. Objectives Gain experience with a handheld GPS Collect data Migrate data to a GIS Use GIS to map features Build local map Discover ways to use GPS/GIS in the classroom

  9. Intro to Precision Ag Technologies

  10. Outline Precision Ag Tools of the Trade Additional Resources

  11. Precision Ag Practices Fertilizer – variable-rate application Planting – row control, variable rate, variety Harvest – collecting yield data Remote Sensing – growth Crop Scouting Chemical Application

  12. Precision Ag Resources • NSF • AgrowKnowledge • GeoTech Center • Conferences • International Conference on Precision Agriculture • InfoAg • Online Resources • Precisionag.com • Precisionagnetwork.com Getting to Know ArcGIS

  13. NSF Resource Centers • www.agrowknow.org • www.geotechcenter.org Getting to Know ArcGIS

  14. Conferences • www.icpaonline.org • www.infoag.org Getting to Know ArcGIS

  15. Online Resources • www.precisionag.com • www.precisionagnetwork.com Getting to Know ArcGIS

  16. Tools Needed for Precision Ag Location Data/Analysis Equipment

  17. Workshop GPS GIS Exercises In the Classroom

  18. GPS Technology Getting to Know ArcGIS

  19. GPS Basics • Global Positioning System • Satellite constellation • Receivers • Ground control system • Information available • Location • Time • Speed • Direction

  20. Components of the GPS Space Segment User Segment Control Segment GroundAntennas Monitor Stations Master Station

  21. How It Works Signal sent from satellites Receiver determines distance from satellite Uses multiple distances to triangulate position

  22. Signal from One Satellite The receiver is somewhere on this sphere.

  23. Triangulation (1 sat) Geometric Principle: You can find one location if you know its distance from other, already-known locations.

  24. Triangulation (2 sats)

  25. Triangulation (3 sats)

  26. Earth’s Atmosphere Solid Structures Electro-magnetic Fields Metal Sources of Signal Interference

  27. Circle of Error X

  28. Making it Better WAAS DGPS RTK

  29. Wide Area Augmentation System GPS Constellation Geostationary WAAS satellites WAAS Control Station (East Coast) WAAS Control Station (West Coast) Local Area System (LAAS)

  30. How GPS Is Used Determining Location Returning to Waypoints Recording Waypoints

  31. GPS-Receivers

  32. Garmin eTrex Buttons and pages

  33. Coordinate systems

  34. Coordinate Systems DD – Decimal Degrees 42.675849° DM – Degrees Minutes 42° 34.5675’ DMS – Degrees, Minutes, Seconds 42° 34’ 23.5” UTM – Northing 23 484.45

  35. Exercise 1 Collecting Location • Objective • Become familiar with basic use of receiver • Be able to change coordinate system formats • Materials Needed • Worksheet • GPS Receiver • Assignment • Choose series of objects • Walk to objects and record coordinates

  36. Discussion • Observations • Feature Sets • Types of objects located • Thinking about data layers • In the Classroom

  37. Post-Lunch • Review morning • Precision Ag • GPS • Collecting Location • Waypoints

  38. Waypoints • Examples of Using Waypoints • Scouting • Remote SensingObservations • Teacher Locations

  39. Direction of waypoint Your location Waypoint Date and Time Latitude and Longitude Waypoints Waypoints are locations or landmarks that can be stored in your GPS. Waypoints may be defined and stored in the unit manually by inputting latitude and longitude from a map or other reference. Or more usually, waypoints may be entered directly by taking a reading with the unit at the location itself, giving it a name, and then saving the point.

  40. Linking features and attributes • Feature classes are tables that store spatial data • Each feature has a record in the table • Unique identifier links feature and attributes Getting to Know ArcGIS

  41. Exercise 2 Navigate Waypoints • Objective • Use GPS to navigate to known points • Materials • GPS Receiver • Worksheet with locations • Assignment • Walk to coordinates and record features

  42. 20 points

  43. Cache of goodies established by individuals Coordinates published on Web Find cache Leave a message Leave some treasure Take some treasure http://www.geocaching.com/ Geocaching

  44. Discussion Observations In the Classroom Rubric (from Terry Brase, Kirkwood College)

  45. Features/Attributes • Feature sets (discuss what’s been discovered) • How a feature set is a data layer • Identify mappable objects that could become features on a map • Create a Data Outline for these features • Attributes

  46. Identify Objects Identify objects around this room that are “mappable” Which items might be worthwhile to have an ‘inventory’ of? Select two features from your list Identify two attributes for each feature that you would want to know about Consider attribute values

  47. Exercise 3 Collecting Waypoints • Objective • Consider features and attributes for spatial data • Choose feature set to inventory • Choose attributes to record • Survey campus for features • Go outside • Discussion

  48. Discussion • Observation • In the Classroom • Research ways in which GPS is used • Weirdest use of GPS • Best use of GPS

  49. Data Entry • Keying in data • Type data into excel or txt file • File transfer

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