Question

What is the name given to the GPS system as a one way design from SV to REC?

a) military b) hidden C) passive d) active

2-Pseudorange is measured by comparing the incoming SV code to _________. This allows for the synchronization of SV and REC clocks.

a) the RCE code replica b) The RCE wave observable c) the wave d) the time.

3-What is the purpose of the Navigation code sent by the SV to the REC?

a) provide time corrections b) provide SV predicted orbits c) To provide pseudorange d) provide relationship to other SVs e) a+b+d f) all

4-What are the two raw data components of a chip code in the binary system?

a)L1 and L2 b) C/A and P c) 0 and 1 d) +1 and -1

5-The P code broadcast is ______ weeks long. Each SV broadcasts 1 week of the code. SV 14 broadcasts the 14th week of the code and so on... a) 14 b) 37 c)11 d)52

6-The carrier phase observable is

a)the REC measured fragment of a single carrier wave from the SV b)the time correction in carrier waves c) impossible to measure d)

impossible to measure

Answer 1

1. Correct Option (C) Passive. Because in this Passive System, the Receiver (REC) only receives the signal from Satellite Vehicle (SV).

2. Correct Option (A) The REC code replica. Because Pseudorange is measured by a GPS receiver using a replica of a portion of the code that is modulated onto the carrier wave. The GPS receiver (REC) generates this replica itself and it is used to compare with the code that is coming in from the satellite.

3. Correct Option (E) A+B+D . This option is selected because the Navigation code never helps in determining the pseudorange and all other purposes are fulfilled by the Navigation Code.

4. Correct Option (C) 0 and 1 . The C/A and P are the type od code which carry the raw datas i.e., 0 and 1 from which GPS receivers derive their time and distance measurements.

5. Correct Option (B) 37 weeks . This 37 week long P code helps a GPS receiver distinguish one satellite’s transmission from another.

6. Correct Option (A) The REC measured fragment of a single carrier wave from the SV