GIAC

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GIAC and GPS Policy
Rick Yorczyk NOAA - National Geodetic Survey FGDC
- Federal Geodetic Control Subcommittee
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The Global Positioning System Management and
Operation of a Dual Use System Joint DOD/DOT
Task Force December 1993

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GIAC GPS Interagency Advisory Council

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FGDC/GIAC Relationship
Federal Geographic Data Committee (FGDC)
Fixed Reference Stations Work Group
Vertical Reference Systems Work Group
Instrument Work Group
Methodology Work Group
Spectrum Issues Work Group
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GPS Interagency Advisory Council (GIAC)
CHAIR DEPARTMENT OF COMMERCE National Oceanic
and Atmospheric Administration National Ocean
Service National Geodetic Survey
Federal Agencies Including FGCS
members DOA DOC DOD DOI DOS DOT EPA FCC NASA. NATI
ONAL CAPITAL PLANNING COMMISSION TVA
EXECUTIVE BOARD POSITIONING SURVEYING USACE,
BLM, NGS, USFS GIS AND MAPPING CENSUS,
USGS TIMING SYSTEMS NIST, USNO TRANSPORTATION/NAVI
GATION CGSIC
SUBCOMMITTEES POSITIONING SURVEYING
APPLICATIONS GIS MAPPING APPLICATIONS TIMING
SYSTEMS APPLICATIONS
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GPS Presidential Decision Directive Goals, 1996

• Strengthen and maintain our national security.
• Encourage acceptance and integration of GPS
  into peaceful civil, commercial and scientific
  applications worldwide.
• Encourage private sector investment in and use
  of U.S. GPS technologies and services.
• Promote safety and efficiency in transportation
  and other fields.
• Promote international cooperation in using GPS
  for peaceful purposes.
• Advance U.S. scientific and technical
  capabilities.

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GPS Management Structure
Defense Radionavigation Policy
Civil Radionavigation Policy
International Issues State Dept. Lead
Civil GPS Service Interface Committee (CGSIC)
Federal Non-Transportation Positioning Timing
Interests
Primary Information Exchange with Users
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CGSIC/GIAC Relationship

CGSIC - concerned with influences on private
and foreign users and - serves as forum to
exchange information between the Government and
all civil users and help identify
civil user needs and issues for resolution. GIAC
- concerned with the Federal sector -
allows limited non-Federal input, when Federal
policy may have a direct impact on
civil usage of GPS and - helps identify
non-transportation Federal GPS positioning and
timing needs and issues for resolution.
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GPS Modernization

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What users want from GPS Reliability - Every
where, all the time Timeliness - Real time or
near real time Accuracy -?

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Basic Civil Positioning Before May 2000
100 m
GPS I, GPS II A, GPS II R

• C/A Code on L1
• Selective Availability On

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Basic Civil Positioning Now
6-11 m
GPS II R

• C/A Code on L1
• Selective Availability Off

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Basic Civil Positioning By 2009
3-5 m
GPS II R(M)

• C/A Code on L1
• Civil Code on L2

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Basic Civil Positioning By 2014
Better resistance to interference
1-3 m
GPS II F

• C/A Code on L1
• Civil Code on L2
• New Code on L5

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Basic Civil Positioning 2018
?
GPS III Full Operational Capability
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GPS Interagency Requirements Plan
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GPS Interagency Requirements Process
Validated Civil Requirements
Validated Military Requirements
Interagency Forum for Operational Requirements (IF
OR)
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Contacts NGS - www.ngs.noaa.gov/ G
IAC/FGCS - www.ngs.noaa.gov/FGCS/ IGEB -
www.igeb.gov/ CGSIC - www.navcen.uscg.gov/cgsic/d
efault.htm