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FGCS 1996 Annual Report

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<br>1996 ANNUAL REPORT</center>

<p><strong>PURPOSE OF SUBCOMMITTEE:</strong>

<p>The Federal Geodetic Control Subcommittee (FGCS) exercises government wide leadership in

coordinating the planning and execution of geodetic, land, and resource surveys, in developing

standards and specifications for these surveys, and in the exchange of survey data and technical

information.  In its role as Global Positioning System (GPS) Interagency Advisory Council

(GIAC) to the DOT Pos/Nav Executive Committee, the FGCS acts to ensure that GPS will

continue to meet the needs of the civilian community and works to strengthen the ties between

the GPS positioning, timing, and navigation communities.


<p>1. Assist government agencies and the general public in meeting geodetic, land, and natural

resource survey needs in the most expeditious and economical manner possible with available


<p>2. Develop standardized instrument testing procedures, evaluate new survey instrumentation and

procedures and publish the results of these evaluations.

<p>3. Develop, publish, and maintain 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>4. Participate in the implementation of a National Geospatial Data Clearinghouse and its

subsequent geodetic data framework.

<p>5. Participate in the nationwide implementation of NAVD88 and in the development of the

nation's geodetic height system using GPS.

<p>6. Monitor compatibility of Federal fixed reference stations with NAD83 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,        consistent with NAD83.

<p>In support of these objectives, the following tasks were performed by the GIAC and the FGCS.


<p><strong>GIAC ACTIVITIES:</strong>

<p>On September 12, 1995, the GPS Interagency Advisory Council (GIAC) was chartered within the

Federal Geodetic Control Subcommittee (FGCS), under the Federal Geographic Data Committee

(FGDC) which is chaired by Interior Secretary Bruce Babbitt.

<p>On September 11, 1996, Secretary Babbitt presented the 14 Federal Agencies represented on the

FGDC with Vice President Al Gore's Hammer Award at the Department of the Interior

headquarters in Washington, D.C.  The group was honored for its vision and efforts toward

creating a national, readily accessible source of accurate geospatial data.  The Hammer Award is

Vice President Al Gore's Special recognition for contributions in support of the Presidents's

National Performance Review principles.  Those principles are: putting customers first, cutting

red tape, empowering employees, and getting back to basics which are the essence of Federal

government "reinvention."

<p>As Director of the National Geodetic Survey, Captain Lewis A. Lapine, NOAA, chairs the FGCS

and represents the GIAC on the permanent interagency GPS Executive Board, jointly chaired by

the Departments of Defense and Transportation.  This Board manages GPS and U.S. Government

augmentations, with other departments and agencies participating as appropriate.  The

Department of State coordinates with departments and agencies, foreign governments, and

international organizations to assess the feasibility of developing standards and guidelines on the

provision and use of GPS services worldwide.

<p>The GIAC concentrates its interests and efforts on the timing and positioning issues of GPS and

related navigation issues.  The minutes of meetings, action items, and general information about

the FGCS and the GIAC are provided on the Worldwide Web over Internet at the following



<p>Since its creation last year, the GIAC has addressed the following issues and topics:

<p>1. Assisted in the development of the Presidential Decision Directive on GPS

<br>Participated with the Department of State - International Working Group concerning:

<br>US - Japan Bilateral Negotiations

Fair Trade Policy

Standardization Issues for Navigation, Spectrums and

Positional Accuracy

<p>2. Spectrum Allocation Issues

<br>DOD/DOT Spectrum Allocation for L5 Carrier Phase Tracking

Theater Denial Consequences for Civil Users

System Interference Testing

<p>3. Federal Radio Navigation Plan

Open Meeting in Boston

Formal Review

<p>4. DOT study for full implementation of USCG Differential Beacons

<p>5. L5 informational presentations prepared for:

Federal Geodetic Control Subcommittee and

Civil Applications Committee

<p>6. GIAC News Flash Service Initiated on Internet

<p>7. USCG Improved Correctors

<p>8. Interagency Questionnaire

<p>9. Continuously Operated Reference Stations, presently with     75 sites being operated by 10

Federal and state agencies, and interpolation algorithm development

<p>10. GIAC agency demonstrations given to date:


<p>11. L2 Full Wavelength Carrier Phase Tracking Versus L5

<p><strong>FGCS ACTIVITIES:</strong>

<p>At the FGCS meeting on June 13, 1996, the Society of American Military Engineers (SAME)

1995 Karo Award was awarded to Ken Bays and Mary Hartel (accepted for her by Dan Webb),

BLM, for outstanding high accuracy survey field work in Romania during 1994 and 1995. 

Eighteen members of NGS' field and office staff also received the award at an earlier ceremony. 

Captain Lapine, who presented the award for SAME, express great satisfaction with the

cooperativeness of the FGCS member agencies to accomplish the Department of State sponsored

project.  Further explanation of the SAME Karo award can be provided by Charles Challstrom of

NGS, at his e-mail address:

<p>The Geospatial Positioning Accuracy Standard was approved by the Methodology Work Group

and the FGCS membership; it was forwarded to the FGDC for final review and for public release

in early 1997.  For copies of the proposed standard and status report on final release, contact Ed

McKay of NGS at his e-mail address:

<p>The Instrument Work Group has been working on the final report of the October 1995 Airborne

GPS test which will be reported at the 1997 Institute on Navigation's GPS Conference.  "Survey

Guidelines on Airborne GPS Procedures" are being developed and will be released during 1997

to complement the final report.  For particulars, contact Sally Frodge, DOT, at her e-mail


<p>According to the review of responses to the CORS questionnaire, nearly one-third of the GPS

users require 5 second data rates rather than 30 second data which will suffice for the majority of

users.  NGS has developed software to derive 5 seconds rates from 30 second block for these

users.  During the year, Captain Lapine had placed highest priority on the effort to complete this

conversion software which is now available.  For the development reports and availability of

software, contact Dr. Charles Schwarz of NGS, at his e-mail address:

<p>The FGCS membership recommended the establishment of a Geodetic Control Profile to be in

compliance with the FIPS 173, Spatial Data Transfer Standard.  The following resolution to

establish this profile was approved unanimously by the FGCS, and was forwarded to the FGDC

for action:

<p>"The Federal Geodetic Control Subcommittee (FGCS) has been briefed on the current efforts by

the National Geophysical Data Center (NGDC) of NOAA to place geodetic control data (called

NOAA Framework Data) into a format conforming with the Spatial Data Transfer Standard

(Federal Information Processing Standard 173).  It recognizes that a necessary first step for this

effort is that a Geodetic Control Profile be written and approved by the formal approval methods

for FIPS standards managed by the National Institutes of Science and Technology (NIST).

<p>Writing such a profile requires skills not found in the FGCS member organizations; it requires a

thorough understanding of the Spatial Data Transfer Standard (SDTS) itself, as well as

knowledge of the procedures for proposing FIPS standards for approval.  Initial contact with the

FGDC Standards Working Group indicates that this group and the SDTS maintenance authority

at USGS are willing to take the lead in both writing and staffing the Geodetic Control Profile.

<p>The FGCS endorses this effort and encourages the FGDC Standards Working Group and the

SDTS maintenance authority to proceed with the development of a Geodetic Control Profile.  It

further encourages the NOAA Framework Data project team at NGDC and the FGCS member

organizations to support and participate in this review effort as resources permit."

<p>During the year, with regard to the above resolution, the Point Profile (Geodetic Control Profile)

addendum to the FIP 173 was cooperatively developed by NOAA and USGS; has been reviewed

by the FGDC Standards Working Group; and is pending approval from the FGDC for release

through the Federal Register to solicit public comments.  After the evaluation of comments, it is

expected that the Point Profile will be incorporated into the Spatial Data Transfer Standard, FIP

173 in early 1997.   For copies of the proposed standard and status report on its final release,

contact John Spencer of NGS at his e-mail address:

<p>NAVD88 has been adopted by Canada only around the Great Lakes; further dialogue must be

continued between Canada/US regarding client driven acceptance of NAVD88 within both

countries.  David Zilkoski of NGS will act as U.S. point of contact and keep the FGCS members

informed of implementation efforts/actions.  There was a meeting in Ottawa, Canada during May

1996 where NAVD88 implementation and related subjects were discussed.  For particulars on

meetings and follow up discussions, contact Dave Zilkoski, e-mail:

<p>The draft "Federal Radio Navigation Plan" (FRP) was distributed to the FGCS members during

the reporting period.  Comments on the FRP are still being compiled by Liz Carpenter, DOT, tel:

617-494-2126, e-mail address:  You may contact her for copies or

provide comments on the FRP.

<p>The draft "Building the National Spatial Data Infrastructure: A Progress Report 1993-1995" was

distributed during the reporting period, this report provides a brief overview of the FGCS and

other subcommittee interactions with the FGDC during the last three years.  For copies or

comments to the report, contact John Spencer, e-mail:

<p>During the year, the FGCS was extremely grateful to have had in attendance the Director,

Geodetic Survey of Canada and members of his staff.  The discussions on contract services of

Canadian government surveying/mapping activities will lead to future exchange of administrative

ideas.  The discussions on the Canadian GPS Base Net validation/calibration sites and "real

time" submeter GPS activities will lead to future exchange of technical and operational ideas.

<p>Minutes from the FGDC and the FGCS meetings held during 1996 are posted on the respective

home pages:

<center><b><p>FGDC -

<br>FGCS -</b></center>

<p>The goals for calendar year 1997 are presently being developed by the FGDC and its various

subcommittees.  Please provide any comments to the FGCS ongoing activities, as herein

reported, as well as any suggestions (or concerns) that need to be considered in the development

of the FGCS 1997 Plan. Please provide comments and suggestions to the FGCS chairperson,

Captain Lewis A. Lapine, NOAA, at the following:


   <br>            tel:    301-713-3222

     <br>          fax:    301-713-4175




Last Updated: Feb 01, 2007 03:56 PM
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