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GPS Services: General Information
Michael McGee, PLS provides consulting services
to surveying firms, engineering firms and government agencies.
These services include training, education and assistance in the
organization, implementation and successful completion of projects
utilizing GPS. Background includes a B.S. in Surveying in 1990
focused on GPS with 30 years experience in all types of surveys.
Services involve training project managers and
receiver operators in GPS survey planning, quality control and
the processing, analysis and adjustment of GPS measurements. Six
high production receivers are available to provide static control,
real time capabilities and GIS data collection.
Instruction and advice are provided on the relationship
and utilization of datums like NAD 27, NAD 83, ITRF 2000 as well
as the NGVD 29 and the modern NAVD 88 vertical datum; adjustments
like the original 1984 and the more recent re-adjustments of the
National Geodetic Reference System now known as the HARN or National
Spatial Reference System (in California this has resulted in a
multitude of adjustments between 1991 and 2000) and reference
systems such as the HARN in California called the HPGN. Also addressed
are the conversions between systems, utilizing the National Geodetic
Survey's control data base and geoidal modeling.
The most practical and productive experience for
new users is the utilization of an actual project to become knowledgeable
in the use of GPS. One can expect with 2-4 receivers to position
8-24 First Order horizontal points per day with elevations accurate
to 0.05-0.15 feet.
Projects can be agreed to on a lump sum basis
once the scope is defined. Project requirements, budget and overhead
constraints will dictate the level of involvement and cost of
services. Costs can be minimized if I organize and coordinate
a project using your staff with the focus primarily on production
and secondarily on education. This will expedite the project;
however, it is likely you would need my services again on the
next project to complete the training. The long term solution
is to make the project an on the job seminar. In the future, as
you take on your own projects, you can rent receivers until the
work load justifies the investment.
We can discuss these items in more detail or answer
any questions you may have. If you have a specific project and
can provide a map we can work together to estimate your office
and field hours and my costs.
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