Which one of the following residual biases involves the GPS accuracy ?

1.	Which one of the following residual biases involves the GPS accuracy ?
A.	Satellite dependent baises due to uncertainty in the orbital parameters of the satellite.
B.	Receiver-depandent biases due to clock stability with line
C.	Signal propagation baises due to the sphere and troposphere propogation.
D.	All the above
Answer» E.

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