Tag Archives: satellite

The distance between a NAVSTAR/GPS satellite and receiver is:

A: calculated from the Doppler shift of the known frequencies
B: determined by the time taken for the signal to arrive from the satellite multiplied by the speed of light
C: calculated, using the WGS-84 reference system, from the known positions of the satellite and the receiver
D: determined by the phase shift of the Pseudo Random Noise code multiplied by the speed of light

 

 

 

 

 

 

 

 

Answer: B

One of the tasks of the control segment of the satellite navigation system NAVSTAR/GPS is to:

A: manipulate the signals of selected satellites to reduce the precision of the position fix
B: manufacture and launch the satellites
C: monitor the status of the satellites
D: grant and monitor user authorisations

 

 

 

 

 

 

 

 

Answer: C

Almanac data stored in the receiver of the satellite navigation system NAVSTAR/GPS is used for the:

A: recognition whether Selective Availability (SA) is operative
B: fast identification of received signals coming from visible satellites
C: assignment of received PRN-codes (Pseudo Random Noise) to the appropriate satellite
D: correction of receiver clock error

 

 

 

 

 

 

 

 

Answer: B