Differential GPS uses a base station of an exactly known location and a mobile reeiver to determine position.
It's crazy to learn how many different stations there are in order for GPS to work. I never knew this information before reading this.
5 Matching Annotations
- Sep 2025
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geo.libretexts.org geo.libretexts.org
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geo.libretexts.org geo.libretexts.org
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More and more, physical geographers use mathematical or numerical models.
Many other scientists use these types of models. I like learning how different topics can overlap.
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geo.libretexts.org geo.libretexts.org
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Geographic Information Systems are being employed to study a number of geographic issues like flood hazard mapping, earthquake hazard studies, economic market area analysis, etc.
I like seeing the different ways Geographic Information Systems can be used. It's so interesting to see how multiple professions can use them effectively.
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geo.libretexts.org geo.libretexts.org
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To get a much larger view of the earth’s surface features, geographers have turned to using remotely sensed data from satellites.
Remote sensing is just one of the many tools geographers use to observe the earth's physical features. Remote sensing probably helps make maps more accurate.
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geo.libretexts.org geo.libretexts.org
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Using administrative units presents a less realistic picture of the pattern of the distribution of natural phenomena. To overcome this, a variant of the choropleth map, the dasymetric map (2) was created.
It's interesting to see how different maps were made to represent different types of data.
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