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15
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Caused by slight discrepancies in each satellite’s four atomic clocks.
Satellite clock errors
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lifesaver
Give 25 points!
Oops!
×
gold
Win 50 points!
Okay!
×
gift
Win 20 points!
Okay!
×
baam
Lose 25 points!
Oops!
15
×
Causes the GPS satellite radio signals to be refracted as they pass through the earth’s atmosphere
Ionospheric interference
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15
×
caused by reflected radio signals from surfaces near the GPS receiver
Multipath interference
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baam
Lose 10 points!
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×
rocket
Go to first place!
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×
fairy
Take points!
5
10
15
20
25
×
banana
Go to last place!
Oops!
15
×
the electromagnetic field that the receiver’s internal electronics generate when it’s turned on.
Receiver noise
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15
×
GPS errors are largely due to water vapor in this layer of the atmosphere. It is fairly insignificant to GPS.
Tropospheric interference
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15
×
Variation in satellite orbits due to gravitational pull and solar pressure fluctuations.
Orbit errors
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