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Which GPS Should I Buy. Tips to Buying a GPS for Mapping . Garmin. Pro XR. GeoExplorer 3. Trimble. Joel Cusick Alaska Support Office. PLGR. Outline. What a GPS Mapping Receiver should do Overview of Main GPS Receiver Types PROS/CONS of Receiver Types

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which gps should i buy
Which GPS Should I Buy
  • Tips to Buying a GPS for Mapping

Garmin

Pro XR

GeoExplorer 3

Trimble

Joel CusickAlaska Support Office

PLGR

outline
Outline
  • What a GPS Mapping Receiver should do
  • Overview of Main GPS Receiver Types
  • PROS/CONS of Receiver Types
  • The Best Tool for the Job
assumptions
Assumptions
  • You supervise people or work in one/many parks in Alaska
  • You want to record your field locations or map existing infrastructure, trails
    • Use to navigate to/from
    • Archive the locations in a later in a GIS
  • You have access to the wonderful AKSO Intranet and the X:drive
what a gps mapping receiver should do5
What a GPS Mapping Receiver should do
  • Hardware
    • Accuracy (How close to Truth)
      • Meet National Mapping Accuracy Standards:
        • 1:63,360 (32meters)
        • 1:24,000 (12 meters)
        • 1:5,000 (4 meters)
    • Precise (How reliable)
    • Rugged
    • Able to Average a Point
    • External Antenna options
    • Good on Batteries

No Problem!

what a gps mapping receiver should do6
What a GPS Mapping Receiver should do
  • Software
    • Export in GIS Friendly Formats (shapes, coverages)
    • Capable of Controlling Attributes in the Field
      • Data Dictionary (Name, Trail Width, Comments)
    • Capable of Datum Transform
    • Mission Planning
      • Sky Plots
      • Planning the day
    • Run on standard PC / equipment
what a gps mapping receiver should do7
What a GPS Mapping Receiver should do
  • Support (AKSO)
    • Manufactured by Trimble, Garmin or Rockwell
    • GIS Products that utilize ESRI - NPS Standard
      • ArcView
      • ArcInfo
    • Ensure your data has long shelf life
overview of main types
Overview of Main Types
  • Recreational Grade GPS - Garmin
  • Mapping Grade GPS - Trimble
  • Y-Code Receivers - Rockwell PLGR+96
recreational grade gps garmin
Recreational Grade GPS - Garmin
  • Features Include:
    • Wide Use -Alaska National Parks/AKSO = 60
    • Accuracy:
      • Autonomous < 15meters 95% typical
      • DGPS ready 3-5 meters 95% typical
    • User Friendly
    • Many models
      • Garmin GPSIII+, GPSMap76, eTrex
    • Moving Base Maps (1:100,000 scale)

Garmin

mapping grade gps trimble
Mapping Grade GPS - Trimble
  • Features Include:
    • Wide Use -Nationally
    • AKSO (dozen)
    • Accuracy:
      • Autonomous < 15meters 95% typical
      • Post-Process DGPS
        • 3-5 meters 95% typical (Geo3)
        • 1 meter 95% typical (ProXR)
    • Pathfinder Office Software
      • Data Dictionary, Mission Planning

Trimble

y code receivers plgr 96
Y-Code Receivers - PLGR+96
  • Features Include:
    • Rugged
    • Good under Canopy
    • 999 Waypoint Storage
    • EHE displayed
    • Datum Switch seen in ASCII Out

PLGR

gps for gis pros and cons
GPS for GIS - Pros and Cons
  • Garmin III+
    • Pros
      • Cheap and consistent 15 meters positions - good under canopy
      • Good “Point tool”
      • Fun and easy to use
      • Integration into ArcView - relatively straightforward
      • Battery usage is great
    • Cons
      • Cheap
      • Position accuracy not so trustworthy
      • Not designed for GIS Mapping - relies on 3rd party software
      • No Data Dictionary capability
      • Decent storage of tracks/waypoints (6-10 hours)
gps for gis pros and cons13
GPS for GIS - Pros and Cons
  • Trimble GeoExplorer 3
    • Pros
      • 1-5 meter mapping tool
      • Point/Line/Poly
      • Rugged
      • Collect for 16 hours
      • Software is excellent
    • Cons
      • $4000
      • Firmware will be changing?
      • Under Canopy issues - must use antenna
      • No Data Dictionary
      • Very small storage of tracks/waypoints(999)
      • Need to post-process after the field (internet connection)
gps for gis pros and cons14
GPS for GIS - Pros and Cons
  • Trimble Pro XR
    • Pros
      • Top-of-the-line GIS Mapping Tool
      • Real-time DGPS
      • Point/Line/Poly
      • Good under Canopy
      • Rugged
      • Software is excellent
    • Cons
      • $10,000
      • Big/Bulky
      • Firmware will be changing
      • Training involved
gps for gis pros and cons15
GPS for GIS - Pros and Cons
  • PLGR
    • Pros
      • Consistent 15 meters positions
      • Familiarity (bugs worked out)
      • Good “Point tool”
      • Rugged. Records error
      • Integration into ArcView - relatively straightforward
    • Cons
      • Older technology
      • Heavy
      • Terrible on batteries
      • Club Fed only
      • No Data Dictionary capability
      • Very small storage of tracks/waypoints(999)
right tool for the right job
Right Tool for the Right Job
  • Sorry… It’s a Multi - Tool Environment
    • Garmin
    • Trimble
    • PLGR
  • Need to learn enough about each system to know when to use the tool
    • Mapping a trash can lid? - ProXR
    • Mapping a ATV trail - Garmin, Geo3 or ProXR
    • Mapping sheep from the air? - Garmin\PLGR
    • Mapping complex attributes? - Geo3 or ProXR
    • In Dense Canopy - PLGR / ProXR
ideal gps toolkits
Ideal GPS Toolkits
  • Garmin for navigation, point collection
    • Use DGPS system only if working along Gulf of Alaska, Southeast, out on the water
  • PLGR for dense people / dense canopy
  • For Serious GIS
    • Trimble Geo3 for open country mapping
    • Trimble Pro XR for everything
what is best
What is Best?
  • Ask Yourself
  • 1) What are your accuracy needs?
    • A) resolution of the other data types
    • B) anticipated data for the future
  • 2) Project Needs
    • A) What are your GIS skills
    • B) Is it just you dealing with the data
  • 3) What part of Alaska are you working in?
  • 4) How much money do you have?
gps toolkits

Winzip Executibles

    • Designed for distribution
  • Embedded help sheets
GPS Toolkits
gps training
GPS Training
  • Yearly training Events
    • Orienteering
    • Awareness Briefings
    • Training
      • WRST (May 14-17)
      • Accupoint (This summer)
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