GPS Biases and Error Sources Quiz

What does SA stand for in the context of GPS errors?

• Satellite Availability

• Selective Availability

• Satellite Accuracy

• Signal Accuracy

Which type of error originates at the satellites?

• Atmospheric delay

• Receiver clock error

• Multipath error

• Ephemeris error

What is the typical accuracy of broadcast orbits in GPS?

• ~2.5 cm

• ~50 m

• ~100 cm

• ~5 cm

What is the primary cause of ionospheric delay?

• Temperature

• Water vapor

• Pressure

• Free electrons

Which error is caused by the reflection of GPS signals from surrounding objects?

• Tropospheric delay

• Multipath error

• Receiver clock error

• Ionospheric delay

What is the effect of selective availability on GPS accuracy?

• Degrades accuracy to 100 meters

• Improves accuracy to 30 meters

• No effect on accuracy

• Increases accuracy for military users

What is the main component of tropospheric delay?

• Wet component

• Ionospheric component

• Dry component

• Satellite clock error

What does DOP stand for in GPS terminology?

• Dilution of Precision

• Degree of Positioning

• Distance of Precision

• Data of Position

Which type of ephemeris is based on actual tracking data?

• Precise ephemerides

• Predicted ephemerides

• Broadcast ephemerides

• Differential ephemerides

What is the typical range error caused by satellite clock errors?

• 5m to 10m

• 1m to 2m

• 10m to 20m

• 2.59m to 5.18m