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Mapping & GIS
| Applications | |
|---|---|
| Title | Mapping & GIS |
| Author(s) | GMV. |
| Level | Medium |
| Year of Publication | 2011 |
Mapping and GIS applications allow to capture, store, manipulate, analyze, manage, and present all types of geographically referenced data[1]. GIS technology combines database, mapping and statistical methods to integrate georeferenced data into visual displays where the relationships, patterns and trends in the data can be more easily identified[2].
Although Mapping and GIS applications do not rely on GNSS as sole means for data capture, the widespread of the GNSS technologies has allowed for low-cost data acquisition processes that made GIS technologies to be more generally used.
Application Characterization
GNSS is used for mapping and GIS essentially for data capture. Traditionally data capture is one of more time processes in GIS applications. GNSS has allowed for low-cost automatic processes for the capture of georeferenced data.
The use of GNSS for data capture of georeferenced data is normally done using two main approaches:
- Surveys - One of the main ways GNSS is used for the data capture of GIS information is through surveys. Surveys are normally done with high-accuracy receivers and are usually a labor intensive activities.
- Operational Georeferenced Data - The pervasive use of low-cost GNSS receivers has allowed that operational data coming from logistics systems or other business support systems is automatically georeferenced. These systems are able to generate large amounts of georeferenced data by a marginal cost. The accuracy of this data can range from meter to tens of meter level accuracies.
Application Examples
Notes