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FGCS 1997 Annual Report

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<P ALIGN="CENTER">FEDERAL GEOGRAPHIC DATA COMMITTEE </P>





<P ALIGN="CENTER">CONSOLIDATED SUBCOMMITTEE AND WORKING GROUP</P>





<P ALIGN="CENTER">1997 REPORT</P>





<BR>


<P ALIGN="CENTER"><STRONG>Geodetic Control Subcommittee</STRONG></P>





<P>                   </P>





<P>The Federal Geodetic Control Subcommittee (FGCS) of the Federal


Geographic Data Committee exercises government-wide leadership in


coordinating the planning and execution of geodetic surveys, in developing


standards and specifications for these surveys, and in the exchange of


geodetic survey data and technical information.  FGCS coordinates Federal


agencies' aspects of surveying that are governmental responsibilities.  These


responsibilities include standards setting, testing new geodetic


instrumentation and operational systems, coordination of user agency


requirements, and dissemination of government data to user agencies.</P>





<BR>


<P>The FGCS acts to ensure that the Global Positioning System (GPS) will


continue to meet the positioning needs of the Federal civilian community and


works to strengthen the ties between the GPS positioning and navigation


communities.  This responsibility will be implemented through its role as


GPS Interagency Advisory Council (GIAC) to the Department of


Transportation PosNav Executive Committee.</P>





<BR>


<BR>


<P ALIGN="CENTER">NSDI Strategic Goal 1</P>





<P ALIGN="CENTER">Increase the awareness and understanding of the vision and concepts of NSDI


through outreach and education</P>





<BR>


<P ALIGN="CENTER">                                                      </P>





<P ALIGN="CENTER"><STRONG>Geodetic Control Subcommittee</STRONG></P>





<BR>


<P><STRONG>Objective:  </STRONG>Identify and address issues relating to long term planning of


Position/Velocity/Timing (PVT) systems</P>





<BR>


<P><STRONG>	Action:</STRONG>  The GPS Interagency Advisory Council (GIAC) provided input to


the U.S. Air Force Capstone Requirements Document addressing future


needs of users of the U.S. PVT systems.  </P>





<P>	<STRONG>Outcomes:</STRONG>  A compilation of future PVT requirements of GIAC member


agencies and private sector constituents represented by GIAC.</P>





<P>	<STRONG>Date:</STRONG>  May 9, 1997</P>





<P>	<STRONG>Responsible Party:</STRONG>  FGCS/GIAC, NOAA</P>





<BR>


<BR>


<P><STRONG>Objective:  </STRONG>Identify and address issues associated with Global Positioning


System (GPS) Modernization.</P>





<BR>


<P>	<STRONG>Action:</STRONG>  GIAC in collaboration with the Institute of Navigation (ION)


held two GPS Modernization Technical Sessions/Workshops: August 26


and November 6.  Ongoing.</P>





<P>	<STRONG>Outcomes:</STRONG>  Three ION facilitated working groups were formed with


GIAC participation to investigate topics associated with GPS


modernization. Defined how GIAC user GPS accuracy requirements


could be met with three levels of positional accuracy. </P>





<P>	<STRONG>Responsible Party:</STRONG>  FGCS/GIAC, NOAA, co-sponsor:  ION</P>





<BR>


<P>	<STRONG>Action:</STRONG>  Five GPS-Derived Orthometric Height Workshops given.</P>





<P>	<STRONG>Responsible Party:</STRONG>  FGCS Vertical Reference Working Group, NOAA, Co-sponsors:  California Land Surveyors Association, Oregon GPS Users


Group, Washington GPS Users Group, Land Surveyors Association of


Washington, American Society for Surveying and mapping (ACSM).</P>





<BR>


<P>	<STRONG>Action:</STRONG>  Continuously Operating Reference Stations (CORS) Workshop,


Houston, TX. </P>





<P>	<STRONG>Responsible Party:</STRONG>  FGCS Fixed Reference Station Working  Group,


NOAA, Co-sponsor:  Texas Society of Professional Surveyors.</P>





<BR>


<BR>


<P><STRONG>Objective:  </STRONG>Identify and address issues associated with positioning accuracy,


techniques, and reference frames.</P>





<BR>


<P>	<STRONG>Action:</STRONG>  Geospatial Positioning Accuracy Standards Workshops,


Raleigh, NC and Williamsburg, VA. </P>





<P>	<STRONG>Responsible Party:</STRONG>  FGCS Methodology Working Group, NOAA, Co-sponsor:  ACSM.</P>





<BR>


<P>	<STRONG>Action:</STRONG>  Field Procedures Required to Meet Survey Standards and


Specifications Workshop, Largo, MD. </P>





<P>	<STRONG>Responsible Party:</STRONG>  FGCS Methodology Working Group, NOAA, Co-sponsor:  Maryland Society of Professional Surveyors.</P>





<BR>


<P>	<STRONG>Action:</STRONG>  Four Development, Implementation and Future of the National


Spatial Reference System Workshops. </P>





<P>	<STRONG>Responsible Party:</STRONG>  FGCS Methodology Working Group, NOAA, Co-sponsors:  California Land Surveyors Association, Massachusetts


Association of Land Surveyors and Civil Engineers, Professional Land


Surveyors of Wyoming, Florida GPS Users Group.</P>





<BR>


<P>	<STRONG>Action:</STRONG>  Three State Plane Coordinate and Datum Transformation


Workshops. </P>





<P>	<STRONG>Responsible Party:</STRONG>  FGCS Methodology Working Group, NOAA, Co-sponsors:  ACSM, Fresno State University, Texas Society of


Professional Surveyors.</P>





<BR>


<BR>


<BR>


<BR>


<BR>


<BR>


<P><STRONG></STRONG><STRONG>Objective:  </STRONG>Evaluate new technologies and approaches that are used in


surveying systems, including the instrumentation, hardware, software, and


procedures that comprise that system.  Notify and pass on necessary data to


the Methodology working group if it the National Geodetic Survey


specifications and/or standards need to be revised.  Outreach to the public


about the technological changes within the surveying community.</P>





<BR>


<P><STRONG>	Action:</STRONG>  Completed testing of NovAtel L1/L2 Outrider GPS survey


system.</P>





<P>	<STRONG>Outcomes:</STRONG>  Work was accomplished on the web site to allow this set


of data to be posted onto the FGCS Instrument Work Group (IWG) area


of the FGCS web pages.  NovAtel has introduced many new antenna


types into the GPS world.  Although the newest antenna from NovAtel


was not available for the test, it was sent soon after.  Testing of the


antenna was accomplished at the NGS Corbin, Virginia, facility.  This


data was also posted to the web.  Results were good and it is


anticipated that the NovAtel test was successful.   A preliminary


letter of acceptance will be drafted pending review of recently


received data from NovAtel.</P>





<P>	<STRONG>Date:</STRONG>  June 15-20, 1997</P>





<P>	<STRONG>Responsible Party:</STRONG>  FGCS/Instrument Working group, DOT, USGS, and


NOAA</P>





<BR>


<P><STRONG>	Action:</STRONG>  Completed testing of two Ashtech surveying systems:  the GPS


based Ashtech Z-Surveyor, and the GPS and GLONASS based Ashtech GG-Surveyor.</P>





<P>	<STRONG>Outcomes:</STRONG>  This was the first FGCS test of a surveying system that


uses the Russian  GLONASS constellation of satellites.   At the


insistence of the FGCS testing team, the kinematic tests for the GG-Surveyor system were accomplished, and a comparison of the results


with the Ashtech software and the TerraSat software was


accomplished.  Both software sets are available for purchase, but no


comparison for consistency of results between the two software


packages using the same set of data had been done for public


dissemination.  The FGCS pointed out that the reference systems and


the transformation parameters used need to conform to published


standards.  The results were satisfactory and it is anticipated that


both Ashtech systems will receive a preliminary letter of acceptance


will be drafted.</P>





<P>	<STRONG>Date:</STRONG>  November 15-21, 1997</P>





<P>	<STRONG>Responsible Party:</STRONG>  FGCS/Instrument Working group, DOT, USGS, and


NOAA</P>





<BR>


<P><STRONG>	Action:</STRONG>  Performed preliminary testing of the Zeiss digital bar code


level DiNi 10.</P>





<P>	<STRONG>Outcomes:</STRONG>  It has been a goal to test other digital levels than the


Leica.  This goal has now been achieved, alleviating the concern about


one manufacturer claiming to have the only FGCS tested system.  Some


of the data necessary for evaluation has been collected.</P>





<P>	<STRONG>Date:</STRONG>  December 5, 1997</P>





<P>	<STRONG>Responsible Party:</STRONG>  FGCS/Instrument Working group, DOT, USGS, and


NOAA</P>





<BR>


<P><STRONG>	Action:</STRONG> Provided Internet access for test data and existing reports.</P>





<P>	<STRONG>Outcomes:</STRONG>  There have been several upheavals in this process.  Work


was, therefore, focused on standardizing certain processes that the


FGCS IWG for every test and improving coordination with NGS.  Several


draft reports, notices, maps of the test course, and other information


are now posted on the web.  The United States Coast Guard (USCG)


Navigation Center (NAVCEN) is the official outreach to the civilian


community on GPS matters, which maintains a web site to outreach to


the civilian community from DoD on information on GPS per


Memorandum of Agreement between DoD and DOT.  The USCG NAVCEN


maintains a web site on GPS and other radionavigation systems and


issues.  This site obtains over 650,000 hits per month.  A link for FGCS


information was established with this web site and some support was


obtained.</P>





<P>	<STRONG>Date:</STRONG>  1997</P>





<P>	<STRONG>Responsible Party:</STRONG>  FGCS/Instrument Working group, DOT, USGS, and


NOAA</P>





<BR>


<P><STRONG>	Action:</STRONG> Opened GPS test course to manufacturers.</P>





<P>	<STRONG>Outcomes:</STRONG>  Magellan came through and used the FGCS test course in


August, 1997.</P>





<P>	<STRONG>Date:</STRONG>  1997</P>





<P>	<STRONG>Responsible Party:</STRONG>  FGCS/Instrument Working group, DOT, USGS, and


NOAA</P>





<BR>


<P><STRONG></STRONG>****************************************************************</P>





<P ALIGN="CENTER">NSDI Strategic Goal 3</P>





<P>Use community-based approaches to develop and maintain common collections


of geospatial data for sound decision-making</P>





<BR>


<BR>


<BR>


<P ALIGN="CENTER"><STRONG>Geodetic Control Subcommittee</STRONG></P>





<BR>


<P><STRONG>Objective:  </STRONG>Monitor compatibility of Federal fixed reference stations with


NAD 83 and their relationship to the development of a single Continuously


Operating Reference Station (CORS) system to meet the requirements of


Federal GPS post-processing procedures. Ongoing.</P>





<BR>


<P>	<STRONG>Action:</STRONG>  Twenty-eight CORS brought online.</P>





<P>	<STRONG>Responsible Party:</STRONG>  FGCS Fixed Reference Stations Work Group, NOAA</P>





<BR>


<BR>


<P><STRONG>Objective:  </STRONG>Ongoing development, publishing, and maintenance of accuracy,


collection, content, transfer, and archive standards for geodetic, land and


resource surveys, and their related metadata.  Promote the use of these


standards by Federal, state, and local levels of government and the private


sector.</P>





<BR>


<P>	<STRONG>Action:</STRONG>  Develop "SDTS Part 6, Point Profile", completed and approved


by the  FGDC Steering Committee.</P>





<P>	<STRONG>Responsible Party:</STRONG>  FGCS Methodology Working Group, NOAA </P>





<BR>


<P>	<STRONG>Action:</STRONG>  Develop "Geospatial Positioning Accuracy Standard".  The


comment period is over.  Any further action is dependent upon decision


by the FGDC Standards Working Group resulting form their review of


the comments. </P>





<P>	<STRONG>Responsible Party:</STRONG>  FGCS Methodology Working Group, NOAA</P>





<BR>


<P> </P>





<BR>


<P><STRONG>Objective:  </STRONG>Ongoing participation in the nationwide implementation of NAVD


88 and in the development of the Nation's geodetic height system using GPS. 


Ongoing.</P>





<P>	</P>





<P>	<STRONG>Action:</STRONG>  Submitted "Guidelines for Establishing GPS-derived Ellipsoid


Heights (Standards:  2 cm and 5 cm)".</P>





<P>	<STRONG>Responsible Party:</STRONG>  FGCS Vertical Reference Systems Work Group,


NOAA</P>





<BR>


<P> </P>





<BR>


<P><STRONG>Objective:  </STRONG>Ongoing participation in the implementation of the geodetic data


framework.</P>





<BR>


<P>	<STRONG>Action:</STRONG>  Completed Geodetic Control Framework Profile</P>





<P>	<STRONG>Responsible Party:</STRONG> FGCS, NOAA</P>





<P>	</P>





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