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Copyright © John Lindsay, 2015

Readings

• Jensen and Jensen Chapter 3

Introduction

• If a GIS is a system for analyzing geospatial data, then we must consider where we can acquire the data used by the GIS.
• We may classify the various data sources as in situ and remote sensing data collection sources.

In situ Data Collection Methods

• GPS/Land surveying
• Ground-based sampling (census)
• Digitization of hard-copy data

Remotely Sensed Data Collection Methods

• Aerial photography
• Multispectral/hyperspectral
• Thermal infrared imaging
• LiDAR (laser scanning)
• Radar (active microwave)
• Sonar (used for bathymmetry)

Satellite Navigation Systems

Remotely Sensed Data Sources