Height Modernization

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Ross Mackay Kentucky Geodetic Advisor
Height Modernization National and Kentucky
Programs
2007 KAPS Conference Bowling Green,
Kentucky February 16, 2007
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Elevation and the Geoid
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Elevation and the Geoid

Topographic Surface
H
h
Ellipsoid
Geoid
h Ellipsoidal Height
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Elevation and the Geoid
H Elevation (Orthometric Height)
h Ellipsoidal Height (from GPS)
N Geoid Height (from Geoid model)

Topographic Surface
H
h
N
N
Geoid
Ellipsoid
h - N
H
h
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Elevation and the Geoid

• Hybrid geoid model
• Gravity
• Leveling
• GPS
• best fit to NAVD 88

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Elevation and the Geoid
Geoid model in Kentucky (Geoid03)
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Kentucky Height Modernization

• Morehead State University
• Grant recipient from NOAA
• Submit application and project reports for Grant
• Develop Kentucky CORS Data Archive Center
• KY Division of Geographic Information
• Provide overall Height Modernization project
  management
• Develop project charters, plans and agreements
• Kentucky Transportation Cabinet
• Install and provide ongoing support of CORS sites
• Manage the award of contracts and oversight of
  the work

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Kentucky Height Modernization
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Kentucky Height Modernization
Site Visits

• CORS Installation Requirements
• Stable site with minimal obstructions
• Uninterrupted Power Supply
• Internet Connection
• Secure Area

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Kentucky Height Modernization
Delivery May 16, 2006
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Kentucky Height Modernization
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Kentucky Height Modernization
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Kentucky Height Modernization
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Kentucky Height Modernization
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Kentucky Height Modernization
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Kentucky Height Modernization
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Kentucky Height Modernization
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Kentucky Height Modernization
Danielle Buchanan
KYTC COT Partners
Perry Semones
Larry Britton
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Kentucky Height Modernization

• Benefits of Height Mod For KYTC
• 2500 - 3000 Saved per Project for Horizontal
  Control
• 10,000 - 12,000 Saved per Project for
  Vertical Control
• An average of 50 projects per year yields a
  savings of 625,000 25 above the Height Mod
  investment for one year.
• Highway Districts also benefit by having a
  permanent CORS - savings gained from reduced
  equipment costs.

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National CORS

• 990 National CORS
• 166 Cooperative CORS
• February 5, 2007

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National CORS
These look like some of the best CORS sites that
I've seen. Don Haw, NGS CORS team member
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National CORS
Guidelines for New and Existing
Continuously Operating Reference Stations
(CORS) National Geodetic Survey National Ocean
Survey, NOAA Silver Spring, MD 20910 February 2006
Guidelines for Establishing and Operating a CORS
A. General Site Operator Requirements B.
Monument B.1. Stability B.2. Location,
Obstructions, and Radio Frequency B.2.a.
Location B.2.b. Obstructions B.2.c. Radio
Frequency Environment B.3. Ground-based B.3.a.
Pillar B.3.b. Braced B.4. Roof-based Monument
B.4.a. Building Characteristics B.4.b. Location
and Attaching to a Building B.5. Attaching
Antenna, Mount and Monument B.6. Orienting
Antenna B.7. Antenna Cable C. Equipment C.1.
Antenna C.2. Antenna Radome C.3. Receiver,
Settings, and Power Supply D. Communications, and
Data Archiving E. Site Metadata E.1. Digital
Photographs E.2. Site Log
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National CORS
KYTG Site Information Form (site log) NGS
CORS See Instructions at http//www.ngs.noaa
.gov/PUBS_LIB/CORS_guidelines.pdf 0. Form
Prepared by (full name) DANIELLE BUCHANAN
Date Prepared 2006-08-30 Report
Type NEW 1. Site Identification
of the GNSS Monument Site Name
KYTC HIGHWAY DISTRICT 7 Four Character ID
KYTG Monument Description
ALUMINUM BRACKET ON MASONRY WALL
Height of the Monument 10 M.(APPROX.)ABOVE
GROUND
Monument Foundation MASSIVE BUILDING
FOUNDATION Marker Description
SCIGN adaptor Date Installed
2006-05-31 Geologic Characteristic
TANGLEWOOD LIMESTONE MEMBER
Bedrock Type LIMESTONE WITH
MINOR SHALE INTERBEDS
Fault
zones nearby LEXINGTON FAULT SYSTEM

Distance/activity 15,000 FT SE / INACTIVE
Additional
Information QUARRIES/MINES VULCAN LIMESTONE
MINE, 11,000 FT SW GEOLOGIC INFORMATION
PROVIDED BY DR. JERRY WEISENFLUH, KGS 2. Site
Location Information City or Town
LEXINGTON State or Province
KENTUCKY Country
USA Tectonic Plate
NORTH AMERICA Latitude (N is )
380431.96 Longitude (E is )
-0842931.91 Elevation (m,ellips.)
265.1 Additional Information (multiple
lines) 3. GNSS Receiver Information 3.1
Receiver Type TRIMBLE NETR5
Satellite System GPSGLONASS
Serial Number 4618K01153
Firmware Version 3.10 Elevation
Cutoff Setting 10 Date Installed
2006-05-31 4. GNSS Antenna Information 4.1
Antenna Type TRM55971.00
Serial Number 30137283 Antenna
Reference Point BAM Marker-gtARP Up Ecc.
(m) TO BE DETERMINED Marker-gtARP North
Ecc(m) 000.0000 Marker-gtARP East Ecc(m)
000.0000 Alignment from True N -0.0833
deg Antenna Cable Type TRIMBLE
41300-30 REVA DCA 0610 Antenna Cable Length
30 M Date Installed
2006-05-11
Site Log File
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National CORS
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Kentucky Height Mod Whats next?
Last Years Model
KY Height Mod Pilot Region
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Kentucky Height Mod Whats next?
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Kentucky Height Mod Whats next?
Leveling to KGRN and CORS
H h - N
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Kentucky Height Mod Whats next?
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Kentucky Height Mod Whats next?
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National Readjustment, NAD83(NSRS2007)
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National Readjustment, NAD83(NSRS2007)

• NAD83(NSRS2007)
• Only GPS has been adjusted.
• The CORS stations served as control, CORS(2002)
• Network and local accuracies have been
  implemented
• Datasheets not yet available.
• Both NAD 83 and ITRF coordinates will be
  produced and published.
• Data available in Readjustment Distribution
  Format (RDF)

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National Readjustment, NAD83(NSRS2007)
A1
10ky.bfile

13NAD 83(NSRS 2007)

HZ2483800001PISGAH 2 RESET
38025475240N084391492065W KY
HZ2483860001
256104
GZ1222800002M 154 RESET
37592167847N084315027428W KY
GZ1222860002
276428
GZ2558800003ROBB RESET
37563532212N084331236840W KY
GZ2558860003
285372
GZ3070800004LFUCG GPS STA 0029
37563416073N084295602129W KY
GZ3070860004
250922
HZ1856800005A 145 RESET
38024283402N084342106297W KY
HZ1856860005
260146
GZ2896800006COMBS
37533423194N084171921273W KY
GZ2896860006
271861
GZ3069800007LFUCG GPS STA 0001
37525876824N084235309452W KY
GZ3069860007
261925
HZ1984800008GEORGETOWN RESET
38115683816N084323111820W KY
HZ1984860008
249376
GZ3094800009LFUCG GPS STA 0070
37570999009N084272018803W KY
GZ3094860009
262872
GZ3087800010LFUCG GPS STA 0063
37575701433N084280020821W KY
GZ3087860010
270100
HZ0162800011I75 T 78 AZ MK
38021283676N084240349241W KY
HZ0162860011
273295
GZ3074800012LFUCG GPS STA 0050
37592673348N084260134752W KY
GZ3074860012
265311
GZ3086800013LFUCG GPS STA 0062
37583525771N084275187363W KY
GZ3086860013
280485
GZ3077800014LFUCG GPS STA 0053
37592735030N084294281391W KY
GZ3077860014
259798
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Planning at NGS
Planning Procedure

• FY07 NGS Annual Guidance Document
• NGS 10 Year Plan
• FY07 NGS Execution Plan
• Improve Communication with NGS Stakeholders

Mission of NGS
To define, maintain and provide access to the
National Spatial Reference System to meet our
nations economic, social, and environmental
needs and To be a world leader in geospatial
activities, including the development and
promotion of standards, specifications, and
guidelines.
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Planning at NGS

• Key visions, related to the Mission
• Define the NSRS
• The NSRS must be more accurate than all
  activities which build upon it, while still being
  practicably achievable.
• Maintain the NSRS
• NGS must track all of the temporal changes to the
  defining points of the NSRS in such a way as to
  always maintain the accuracy in the NSRS
  definition.
• Provide Access to the NSRS
• NGS must develop and maintain guidelines for
  users to access the NSRS at a variety of
  accuracies.
• NGS will publish all coordinates of defining
  points of the NSRS with an epoch tag and will
  furthermore publish velocities relative to that
  epoch-tagged set of coordinates
• Be a world leader in geospatial activities
• NGS should completely revisit, rewrite or create
  new standards, specifications and guidelines
  documents, as well as retiring out-of-date
  versions of these documents

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Planning at NGS

• In order to achieve the vision,
• these areas of emphasis must drive all future NGS
  activities
• Modernize CORS
• (NGS owned and operated Foundation CORS?)
• Improve gravity field modeling
• (Define North American vertical datum through
  GNSS and a gravimetric geoid?)
• Migrate the coastal mapping program toward IOCM
• (Fully integrate NGS shoreline activities with
  other NOAA coastal mapping)
• Add and improve core capabilities
• (Retrain and retool NGS workforce, Modernize
  tools)
• Implement a global leadership strategy
• (Standards specifications, educational
  initiatives, increased publication)

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Ross Mackay Kentucky Geodetic Advisor
ross.mackay_at_ky.gov on the web at ngs.ky.gov (502
) 564-1450