Question 1
What does Universal Time UT1 represent?
Question 2
What does the time correction DUT1 represent?
Question 3
Which coordinate frame is non-rotating with respect to distant stars and used to describe satellite orbits?
Question 4
Why must GNSS-derived positions be referenced to a specific ITRF epoch?
Question 5
Which phenomenon causes the Sagnac effect in GNSS positioning?
