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2 cards from this section. Quick, good the night before a test.
What is ephemeris error?
Think about satellite positioning.
What type of delay does the ionosphere cause?
Which layer of the atmosphere are we referring to?
What is the primary cause of ephemeris errors?
Think about which error is tied to satellite locations.
True or False: Multipath errors can occur in environments with large buildings.
Consider the environment's impact on signal pathways.
If a GNSS receiver measures a distance of 500 meters, but abnormal atmospheric conditions introduce a ionospheric delay of 5 meters and multipath errors of 1.0 meter, what is the corrected distance?
Subtract the total error from the measured distance.
A GNSS unit experiences a 3-meter clock error, a 2-meter ephemeris error, and a 1.5-meter receiver error. What is the total positioning error experienced?
Add up all the errors to find the total error.
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