CompassTools

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CompassTools

• Solutions For
• GIS Field Data Collection

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What is GPS?

• 24 Satellites in Final Constellation
• Satellites in Very High Orbit (20,200 km)
• Continuous Availability
• 6 to 11 SVs Always in View

• World Wide Coverage
• Passive Service
• Unlimited Number of Users
• Resistance to Interference and Jamming
• Allows Common Grid Reference

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Grades of GPS

• Recreational (100 - 1,000)
• 10 meter accuracy
• Mapping (3,000 - 20,000)
• 10cm - 5 meter accuracy
• Survey (8,000 - 200,000)
• 1mm - 5cm accuracy

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Ways GPS can be used

• Mapping
• Recording something, somewhere
• What do I have?
• Navigation
• Finding something, somewhere
• Where is it?
• Updating
• Verifying something, somewhere
• Is the information I have correct?

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Rugged CE Device
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Basic Mapping Unit
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GeoXT and XM

• Handheld self-contained GPS/GIS data collection
  and maintenance tool
• productive data collection
• real-time DGPS withBoB or WAAS
• GIS datamaintenance
• sub-meter accuracy or
• 2-5 meter accuracy

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Beacon-on-a-Belt (BoB)
Your ideal real-time companion

• Real-time DGPS
• Cable-free ergonomics
• Easy to use

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Sub-meter Backpack units
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GPS Field Collector
Full functionality - GIS data collection and
maintenance software
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GPS Pathfinder Pro XR / XRS

• Decimeter, differential GPS / GIS data collection
  tool
• Integrated technology
• GPS Beacon Satellite
• Satellite differential
• (LandStar and OmniSTAR)
• Dynamic decimeter accuracy
• 10-30cm for points, lines, areas
• Choice of Asset Surveyor or ASPEN software

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Data Collection

• Collection of spatial data
• Points, Lines, Areas
• Offset locations
• 10cm to 5 meter precision
• Customized attributeinformation
• Menu lists, Text, Numeric, Dates and times
• Multiple data dictionary support
• Infield data dictionary creation

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Data Collection
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Data Maintenance

• Relocate featuresgraphically
• Verify and updatepositions and attributes
• Changes trackedautomatically
• Add new features
• Integrate changes back into GIS

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Data Maintenance
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Real-time Map

• Display features as you map or update them
• Easy zoom control
• Filter by
• feature type
• time
• update status

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Navigation

• Navigate directly to features
• Use antenna for real-time DGPS precision
• Both grades of mapping
• receivers (XRS and GeoXT/XM)
• support precise
• navigation

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Navigation
Feature relocation
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Applications

• Utility and Urban Asset Databases
• Utility poles
• Road centerlines
• Transportation
• Urbaninfrastructure

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Who is using GPS?

• Colorado Open Space
• Maximize personnel
• Road inventory Line
• Weed Mapping Area
• Inventory Point
• Colorado State Parks
• Seasonal staff
• Trail mapping
• Plant species inventory
• Park infrastructure

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Map Display

• Provides a graphical display of your field data
• Ability to display attribute information along
  with features on the map
• Easily identify features for updating
• Allows you to digitize new
• features

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Offsets
Collect location without visiting site
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External Sensors

• GPS can be linked to other electronic metering
  devices such as
• Laser rangefinders for GPS offsets
• Depth finders for lake-bottom mapping
• Digital Cameras
• Examples of applications
• Water Quality Analysis
• Magnetic Field Strength
• Radiation Levels

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Do you need raster backgrounds with GPS?
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Imagery Options

• Pixel Sizes
• 10m, 1m, 0.5m, 1ft, 6 in
• Accuracy
• Simple Rectification - depends on amount of GCPs
• Orthorectification - 1-2 meters typical
• Spectral
• Grayscale
• Color

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Powerful Tools!
Many tools that allow quick and seamless data
flow from the field to the GIS and back again