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Current Trends in Geographical Data Acquisition: An Epilogue

  • Zhilin Li
  • Yong-Qi Chen

Abstract

The importance of geographical data acquisition has been widely recognized, and it is often reported that about 80% of the budget of a GIS project is spent on data. If there is no data for a project area, then one needs to acquire new sets of data, leading to a process called new survey. If some data exists but some of them are out of date, then there is a need of data revision, leading to a process called re-survey. After the based data sets are available for most of the area, data revision will become an issue.

Keywords

Global Position System Synthetic Aperture Radar Synthetic Aperture Radar Image Aerial Photography Global Position System Receiver 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Wien 2001

Authors and Affiliations

  • Zhilin Li
  • Yong-Qi Chen

There are no affiliations available

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