State of Maryland Government GPS Activities

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State of Maryland GovernmentGPS Activities

• Presented by
• Joseph M. White
• Maryland State Highway Administration

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Office of Planning and Preliminary Engineering
Highway Information Services DivisionCounty
Improvement Packages and Map Updating
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• GPS is being used to collect new county and
  highway alignment data for the verification of
  the county highway improvement packages
• The data is also being used to verify the
  positional location of new features and existing
  roads

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• The GPS data is overlaid against existing Grid
  Maps, aerial photography and SPOT satellite
  images
• This procedure is to insure quality and verify
  positional accuracy of the existing maps
  maintained by the SHA Mapping Team

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• After insuring quality the data is then used in
  the grid map updating procedure
• The Statewide Grid Maps are also used as the base
  mapping for Maryland State Highway
  Administrations GIS

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• The Highway Information Services Division will
  soon be investigating Electronic Road Inventory
  to automate downloading GPS data into their
  databases
• This would eventually save more time with the
  maps and database updates

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For more information contact

• Joseph White
• 410-545-5538
• jmwhite_at_sha.state.md.us

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Office of Environmental DesignLandscape
Operations Division

• Reforestation Location

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• GPS is being used to provide survey and analysis
  of various reforestation, wildflower, wetland,
  natural regeneration sites and assess state
  right-of-way for future mitigation
• The data collected will be used in planning of
  future road construction, highway maintenance,
  mitigation and needs assessment
• The collected data will also be used as a SHA GIS
  layer

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For more information contact

• Lisa Spelker
• 410-545-2948
• LSpelker_at_sha.state.md.us

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Office of Highway Development Division of Plats
Surveys

• Establish Horizontal and Vertical Control for
  Highway Related Projects

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• GPS is being used to set control for all survey
  jobs
• All surveys are tied to the High Accuracy
  Reference Network (HARN)
• Establish new control monuments for densification
  of the HARN
• Establish control for Arial Photogrammetry

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• Also using GPS to delineate wetland areas
• This data is used in location of wetlands for
  possible impact during road construction

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For more information contact

• Neil Eppig
• 410-545-8961
• NEppig_at_sha.state.md.us

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Office of Materials and ResearchPavement Division

• Automated Roadway Analyzer (ARAN)

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• The Aran uses a combination of high resolution
  video, ultrasonic sensors, accelerometers,
  gyroscopes and GPS to collect data at highway
  speeds
• The Aran records cracking, rutting, roughness,
  grade, curve radius and more
• It also records right-of-way video as a permanent
  record of roadway inventory

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• The data collected is incorporated with the Road
  Performance information and can be used to
  identify deficient road locations
• The Construction History, Existing Road Surface,
  Pavement Friction, Pavement Condition databases
  are updated with the collected data and are part
  of the SHA GIS

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For more information contact

• Paul Dorsey
• 410-321-3133
• Pdorsey_at_sha.state.md.us

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Office of Materials and ResearchGeotechnical
Explorations Division

• Locating Borings

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• GPS is being used to navigate to boring sites
  prior to drilling, eliminating errors from taken
  measurements off of plans
• GPS is also being used to locate borings
  previously drilled to be accurately plotted on
  plans
• While in the field if potential problem areas are
  encountered such as sinkholes, unconsolidated
  fills and low saturated areas, GPS is used to
  locate these areas

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For more information contact

• Steven Boyd
• 410-321-3184
• sboyd_at_sha.state.md.us

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Wildlife and Heritage Division

• Burn and Drip GPS Mapped Boundaries
• Endangered Species Areas

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Burn and Drip GPS Mapped Boundaries

• A large area of overgrown pines are cut and small
  areas at a time are burned
• To protect a species of plant that only grows in
  this area in the entire world

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• GPS is also used for navigating to various ground
  locations sited on air-video flights for
  vegetation classification
• GPS is also used to track sites of endangered
  species, this information is kept from the
  general public for safety of the species

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Contact for more information

• Tim Palmer
• 410-260-8559
• TAPalmer_at_dnr.state.md.us

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Maryland Geological SurveyResource Assessment
ServiceBathymetric Surveying of Drinking
WaterReservoirs Using DGPS
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Bathymetric Surveying

• Horizontal location is determined through DGPS
• Vertical Depth is determined through the use of
  an echosounder
• Data is asynchronous
• Quality control measures are enforced

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Asynchronous Data

• Data from the GPS and Echosounder are not logged
  at the same time
• GPS post-processing interpolates the location of
  the echosounder data
• Errors due to interpolation were kept to a
  minimum by controlling survey speed (4 knots) and
  obtaining a GPS fix every second

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• Typically this type of survey is done in areas
  that have seen a population density change over
  the recent years

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Other ways Maryland Geological Survey is using
DGPS

• Coastal Shoreline Change Mapping
• Water Well Location and Monitoring
• Sinkhole Location Mapping

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Contact for more information

• Richard Ortt
• 410-554-5541
• rortt_at_mgs.md.gov

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Public Lands Division

• State Park Trails and Boundaries

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• GPS is being used in the mapping of state park
  boundaries and park trails

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Contact for more information

• John Dulaney
• 410-260-8419
• Jdulaney_at_dnr.state.md.us

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Western Maryland Community College GPS Utility
Program

• Community Base Stations
• Higher Education
• Employee Training

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Western Maryland Community College GPS Utility
Program

• Community base stations will be located on the
  campuses of Garrett Community, Allegany and
  Hagerstown Junior Colleges
• The base station data will be accessible through
  a Frostburg State University web page
• The Garrett Community College base station will
  be NGS CORS compliant

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Western Maryland Community College GPS Utility
Program

• Classes will be available at all four colleges
• Estimated 150 credit students, 170 continuing
  education students and over 18 local businesses
  will benefit this program every year through
  classroom training

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Western Maryland Community College GPS Utility
Program

• The primary objective of this project is to
  bolster the economic outlook of the area
• GPS Receivers will be available to local
  businesses to rent, enabling them to be more
  competitive with the out of area businesses who
  already use GPS technology

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Western Maryland Community College GPS Utility
Program

• Contact for more information
• Steve Resh
• 301-784-5307
• steve_at_ac.cc.md.us