Equipment

 Handheld GPS
 Geodetic Class GPS
    Receivers

GPS

The Global Positioning System (GPS) is a satellite navigation system based on signals transmitted from satellites to ground receivers.

Examples Of Usage

GPS is be used for:

  • General navigation and reconnaisance surveys
  • Control surveys and control point re-establishment
  • Very precise deformation surveys

Factors Which Influence The Use Of GPS

  • The type of receiver and the number and pattern of visible satellites are the main influences on accuracy and precision
  • Line of sight obstructions, such as trees and buildings, have a great influence on the usefulness of GPS, as the transmitted signals are easily blocked

Survey Methods Used For

Follow this link for more information about GPS.

 Choose A Topic   Global Positioning System

Handheld GPS Units

Handheld GPS receivers are widely used for navigation in the air and at sea.  Although limited in accuracy to tens of metres, handheld receivers are convenient, portable and low cost.

Two different handheld GPS units are shown to the right.

 

The Department of Geomatics
Maintained by:  Nicole Jones
Date Created:  October 1998

Copyright © 1998
Authorized by:  Asst. Dean Computing & Multimedia
Last Modified: 23 October 1998