02 GPS (Global Positioning System)

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8 Terms

1
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What is the primary purpose of GPS in mobile phones?

To provide precise navigation and location information.

2
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Who originally created the GPS satellites?

The US Department of Defense.

3
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How many GPS satellites are currently in orbit around the Earth?

Answer: Over 30 GPS satellites.

4
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How many satellites does a mobile phone need to hear signals from to calculate precise location information?

At least four satellites.

5
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What information can a phone calculate from the GPS satellites?

Longitude, latitude, and altitude.

6
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How does a mobile phone determine your location using GPS satellites?

By calculating timing differences from the signals coming from different satellites.

7
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What additional sources do mobile phones use to improve location accuracy?

Wi-Fi connectivity and nearby cellular towers.

8
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What do we commonly see on our phones that shows the results of GPS signals?

Maps and directions.