The networks created by these control points serves as a basis
for any subsequent GIS, digital orthophoto, mapping or engineering
design.
EMI established a GPS geodetic network consisting of 300+ control points
covering 61 counties in GA and 4 counties in SC. This project was
funded by NASA for the geoid modeling research.
50 First Order GPS control points were establsihed to
support the Countywide orthophoto mapping for Bryan County
Georgia. EMI served as prime consultant and performed
planning, paneling, adjustment, and QC/QA of data. The
accuracy of these 50 control points superceded the FGCC
standards.
QC/QA of First Order GPS control points for a 47-mile
(km) urban rail transit system. EMI served as prime consultant
and identified appropriate photo-control points for a
system-wide digital orthophoto base mapping project. These
control points also serve as control for engineering survey,
construction and right-of-way management, GIS development
and preliminary corridor studies of rail extensions.
More than 120 1st, 2nd and 3rd order GPS control points
were established for the Center for International Agriculture
in the Tropics (CIAT), Cali, Colombia. This information
was used to develop two GIS systems. The first utilized
LANDSAT imagery for a watershed management GIS capable
of hydrologic modeling. The second served to monitor agricultural
productivity influences on large-scale sugarcane plantations,
such as irrigation, crop production and soil fertility.
Findings were published in an ACSM report entitled, "
". (PWE-Acharya)
Over 500 GPS points were collected for a research project
related to digital photogrammetry performed in the Lavonia
area of Northeast Georgia. The project was sponsored by
the United States Federal Highway Administration (FHWA)and
the Georgia Department of Transportation (GDOT). GPS data
points were collected in close proximity to one other
to perform comparative analysis of a variety of conventional
and GPS surveying techniques. GPS techniques performed
included Static, Fast-Static, Stop-and-Go Kinematic and
Continuous Kinematic procedures. At the time Real Time
Kinematic (RTK) GPS was not fully developed for field
use. The study concluded all methods employed, other than
Continuous Kinematic, provided survey accuracy appropriate
for engineering design. (PWE-Acharya)
More than 1000 1st and 2nd order GPS control points
were collected for development of an initial county-wide
Geographic Information System (GIS) of sq. miles (sq.
km) Forsyth County, Georgia. Forsyth is the fastest growing
county in the metro-Atlanta area and lies along Lake Lanier,
the most actively used property managed by the United
States Army Corps of Engineers, with over 5 million visitors
per year. One of the control points has been upgraded
to B-order (Georgia High Accuracy Reference Network) and
included in the National Geodetic Reference System Database
(Blue-Booked). (PWE-Acharya)
More than 150 I and II order GPS control points were
collected for development of a Geographic Information
System (GIS) for Cobb County, Georgia. Cobb is part of
the metro-Atlanta area and is a rapidly growing county
with a land area of approximately 400 sq. miles (1024
sq. km) and an estimated population of 450,000. The GIS
provides information regarding over $40 billion worth
of land, property, and business investment. (PWE-Acharya)
Blue-booking of a Community GPS base station in Valdosta,
Georgia for the South Georgia Regional Development Center.
(PWE-Acharya)
Blue-booking of a Community GPS base station at the
University of Georgia, Athens, Georgia. (PWE-Acharya)
Approximately 100 first and second order control points
were established for the Tennessee Valley Authority (TVA)
to develop a GIS for property management for over sq.
miles (sq. km) (PWE-Acharya).
Approximately 60 photo control points were established
for the United States Federal Highway Administration (FHWA)
for preconstruction design of the Natchez Trace parkway
project. Conventional aerial photography was flown in
order to generate base maps necessary for design of this
highway. (PWE-Acharya)
