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To expose students to the world of GIS as it relates to water and wastewater systems.Student should learn the basic componentsof GIS and GPS.

OBJECTIVE

GIS ?

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GIS ?

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GIS ?

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GIS Graphical Information System

A Graphical Information System in its simplest form is just a Map.

It does not have to be a electronic map. However in modern terms it is used to describe electronic mapping.

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The idea that the earth was a sphere, and not a flat disc, was first advanced by philosophers of Pythagoras’ school, and brought to general attention through the writings of Plato.

a2+b2=c2

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Ptolemy an astronomer laid the foundations of modern trigonometry.

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Mapping the Maps:1950-1980 AD

Since 1978 to present the United States has been launching Global Positioning Satellites (GPS) to map out areas around the world. With new technologies mapping has become more accurate than ever before.

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GIS ?? GPS GIS = ?

GPS = ?

GIS ?? GPS GIS = Geographical Information

Systems

GPS = ?

GIS ?? GPS GIS = Geographical Information

Systems

GPS = Global Positioning

GIS & GPS Today Affordable GIS for Smaller Systems Accurate Meter Locates For AMR

Systems Daily Work Task Integration OUPS Locate Entries Fast and Accurate Field Repairs Autodialing for Boil Advisory Areas Asset Management New Projects GPS Manholes, Outfalls, Catch Basins

GIS & GPS Today Affordable GIS for Smaller Systems Accurate Meter Locates For AMR

Systems Daily Work Task Integration OUPS Locate Entries Fast and Accurate Field Repairs Autodialing for Boil Advisory Areas Asset Management New Projects GPS Manholes, Outfalls, Catch

Basins

Mapping

Coordinate Systems WGS84

World Geodetic System 1984 Latitude Longitude

NAD83 North American Datum 1983

Ohio State Plane North 3401 Ohio State Plane South 3402 Ohio State Plane Coordinate System

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Mapping

Coordinate Systems WGS84

World Geodetic System 1984 The World Geodetic System is a standard

for use in cartography, geodesy, and navigation. It comprises a standard coordinate frame for the Earth, a standard spherodial reference surface (the datum or reference ellipsoid) for raw altitude data, and a gravitational equipotential surface (the geoid) that defines the nominal sea level.

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Mapping

Coordinate Systems WGS84

World Geodetic System 1984

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Mapping

Coordinate Systems WGS84

World Geodetic System 1984 Latitude Longitude

NAD83 The North American Datum is the

official datum used for the primary geodetic network in North America

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Mapping

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OHIO

STATE

PLANE

COORDINATE

SYSTEM

STATE COORDINATE SYSTEMS

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OHIO NORTH ZONE 3401

ALLEN, ASHLAND, ASHTABULA, AUGLAIZE,

CARROLL, COLUMBIANA, COSHOCTON,

CRAWFORD, CUYAHOGA, DEFIANCE, DELAWARE,

ERIE, FULTON, GEAUGA, HANCOCK, HARDIN,

HARRISON, HENRY, HOLMES, HURON, JEFFERSON,

KNOX, LAKE, LOGAN, LORAIN, LUCAS, MAHONING,

MARION, MEDINA, MERCER, MORROW, OTTAWA,

PAULDING, PORTAGE, PUTNAM, RICHLAND,

SANDUSKY, SENECA, SHELBY, STARK, SUMMIT,

TRUMBULL, TUSCARAWAS, UNION, VAN WERT,

WAYNE, WILLIAMS, WOOD, WYANDOT

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OHIO SOUTH ZONE 3402

ADAMS, ATHENS, BELMONT, BROWN, BUTLER,

CHAMPAIGN, CLARK, CLERMONT, CLINTON,

DARKE, FAIRFIELD, FAYETTE, FRANKLIN, GALLIA,

GREENE, GUERNSEY, HAMILTON, HIGHLAND,

HOCKING, JACKSON, LAWRENCE, LICKING,

MADISON, MEIGS, MIAMI, MONROE, MONTGOMERY,

MORGAN, MUSKINGUM, NOBLE, PERRY,

PICKAWAY, PIKE, PREBLE, ROSS, SCIOTO, VINTON,

WARREN, WASHINGTON

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Introduction to Field GPS More than just a point in

space. Provides a GPS Coordinate Provides pertinent information of those points

Allows overlapping of other map information

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GRADES OF GPSRecreational, Mapping, &

Survey Recreational GPS receivers are sold at most box stores and at many sporting goods and camping stores. They are also availablewidely through Internet retailers. At Least 3 satellites required for a good fix.

Does not provide the accuracy needed for utilities.

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GRADES OF GPSRecreational, Mapping, &

Survey Recreational

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GRADES OF GPSRecreational, Mapping, &

Survey Mapping GPS receivers are typically less user-friendly than the Recreational GPS units, and they cost significantly more. Mapping grade GPS are more accurate than recreational units, commonly to within one meter (approximately 3 feet).

In this class we are teaching how to use highly accurate Mapping units to gather field data within an accuracy of 1 meter ..

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GRADES OF GPSRecreational, Mapping, &

Survey Mapping

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GRADES OF GPSRecreational, Mapping, &

Survey Surveying GPS receivers are the most accurate and the most expensive. They are accurate to within a centimeter.

These GPS receivers are most often used by professional surveyors and excel in high accuracy measurements of fixed positions.

z

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GRADES OF GPSRecreational, Mapping, &

Survey Surveying GPS receivers are the most accurate and the most expensive. They are accurate to within a centimeter.

These GPS receivers are most often used by professional surveyors and excel in high accuracy measurements of fixed positions.

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GRADES OF GPSRecreational, Mapping, &

Survey Surveying

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Satellites and ReceiversHow they Work

Trilateration involves the determination of absolute or relative locations of points by measurement of distances, using the geomerty of spheres or triangle but does not involve the measurement of angles.

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Satellite Errors

Ionosphere effects ± 5 meters Shifts in the satellite orbits ± 2.5 meter Clock errors of the satellites' clocks ± 2 meter Multipath effect ± 1 meter Tropospheric effects ± 0.5 meter Calculation- und rounding errors ± 1 meter

PDOP Position Dilution of Precision

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Satellite Errors

Ionosphere effects ± 5 meters Shifts in the satellite orbits ± 2.5 meter Clock errors of the satellites' clocks ± 2 meter Multipath effect ± 1 meter Tropospheric effects ± 0.5 meter Calculation- und rounding errors ± 1 meter

PDOP Position Dilution of Precision

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Satellite Errors

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