There are many types of spatial data. Each type offers a specific benefit to the GIS user, but has specific requirements that must be met to achieve a quality result. Once a GIS user determines what they want to get OUT of the system, the determination of what needs to be put IN to the system can begin.

Remote Sensing

- About Remote Sensing - The Electromagnetic Spectrum - Imaging Systems - Image Formation Techniques - Image Formation Techniques (Cont'd) - Aerial Photography Interactive Self-Test - Resolution - Interpreting Imagery - Processing Imagery - Imagery in Demining - Imagery Sources - More Information

Data Standards

- About Data Standards - Coordinate Systems - Projection - Datum - Ellipsoid - Scale - Metadata - Recommendations - OpenGIS Consortium

Global Positioning System

- About GPS - GPS Planning - Obtaining GPS Data - Processing GPS Data - GPS In Humanitarian Demining - GPS Products - GPS Satellite Systems - Future of GPS

Copyright

- About Copyright - Copyright Law - License Agreements