GPS - Global Positioning System

Global Positioning System (GPS) is a worldwide radio-navigation system formed from a constellation of 24 satellites and their ground stations.
GPS uses these "man-made stars" as reference points to calculate positions accurate to a matter of meters. In fact, with advanced forms of GPS you can make measurements accurate to a centimeter!
Accounting for urban assets is critical for budgeting and planning purposes. In fact, some Government regulations, such as GASB-34, require regular accurate asset inspections. Planners must also monitor assets to prevent public safety liability.
In September (2002) the GIS department received new 'state of the art' Trimble Global Positioning System equipment. The equipment will allow several City departments to locate, identify and digitally record features to sub-meter accuracy.

Click here to download City of Rowlett Geodetic Control Network

Current GPS Constellations
Click here to know more about the current GPS Constellations
United States - Space and Advanced Technology
Click here to know more about the US Department of State
All About GPS - Trimble Navigation Inc. tutorials
GPStoday - GPS news, handheld GPS, software and more...
American Congress on Surveying & Mapping (ACSM)
International Society of Photogrammetry & Remote Sensing (ISPRS)
US National Geodetic Survey
US Coast Guard Navigation Information Service


Street Crew using the GPS equipment to measure 27' wide streets in the City.

University of Texas at Dallas interns assist the City by GPS'ing City features such as fire hydrants, manholes, signage, valves etc...


Copyright © 2006 City of Rowlett Geographic Information Systems    Last modified: 09/01/2019