cartome.org
11 June 2001
Source: http://www.fgdc.gov/standards/status/usng.html
Federal
Geographic Data Committee
Standard
for a United States National Grid for Spatial Addressing
This standard
is open for public
review through June 22, 2001
OBJECTIVES:
The objectives of this standard are to provide the community with:
- A presentation standard
that enables the use of large-scale paper and digital maps with Global
Positioning System (GPS). Persons using different commercial brands or government
produced maps will be able to communicate with each other because they will
all use the same grid reference system. In addition, the paper
maps that use the U.S. National Grid will be easily used in conjunction with
GPS receivers.
- An unambiguous, geodetically
referenced, and mathematically uniform system for specifying a two-dimensional
location. It can be used to supplement conventional street addresses
and it will provide a means for specifying location away from the road network.
- A single system that
can be taught to all citizens in the school system, and that can be used in
any community across the nation.
- A system that is seamless
at political boundaries and that can be uniformly truncated at various levels
of precision.
- A basis for building
a street and feature index database that can be accessed and used by any member
of the community and used with any map product or device that uses the standard
grid.
SCOPE:
This standard will define a United States National Grid (USNG). It is intended
to serve as the preferred grid system for general purpose mapping applications.
It is intended for use in mapping at scales from approximately 1:5,000 to 1:1,000,000.
Technically, it will be the same as the Military Grid Reference System (MGRS),
taking advantage of that public domain system's use of the Universal Transverse
Mercator (UTM) grid and truncation and variable precision features. The standard
will address other issues pertinent to civil mapping, such as recommended grid
spacing.
This standard is not intended
to change how coordinates are stored in computers. It is not intended to replace
the use of latitude and longitude on nautical and aeronautical charts.
It is not intended to be used on maps at scales smaller than approximately 1:1,000,000.
It is not intended to replace the State Plane Coordinate System (SPCS). SPCS
will continue to be used where jurisdictions prefer it for property descriptions,
mapping at scales larger than 1:5,000, or other more technical uses such as
manual surveying.
Persons interested in reviewing the Standard for a United States National Grid
may download the public review draft in Microsoft
Word format or in PDF
format; also, download figures
in PDF format to accompany the text. All reviewers are strongly
urged to use the Review Comment
Template when preparing and submitting comments.
Reviewers may send their
comments to gdc-usgrid@www.fgdc.gov.
For information about the
FGDC standards process (including public review), please visit FGDC Standards or
contact Ms. Julie Binder Maitra, FGDC Standards Coordinator, by phone at (703)
648-4627 or by E-mail at jmaitra@usgs.gov.
Read the full Proposal
in Microsoft Word format.
Find out more about the
sponsoring FGDC Subcommittee or Working Group, FGDC
Standards Working Group
Standard is at Step 8, Coordinate
Public Review of the FGDC Standards Process.
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PDF to HTML
FGDC, USGS, 590 National
Center, Reston, VA 20192
URL: http://www.fgdc.gov/standards/status/usng.html
Updated: Friday, 11-May-2001 07:08:50 EDT
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