LESSON 5
PRACTICE EXERCISE
The following items will test your grasp of the material covered in this lesson. There is only one correct
answer for each item. When you have completed the exercise, check your answer with the answer key
that follows. If you answer any item incorrectly, study again that part which contains the portion
involved.
1.
In a NAVSTAR GPS, distances are measured between the receiver antenna and the satellites,
and the position is determined from the intersections of the ___________________________________.
A.
Guideline
B.
Redundant
C.
Line Distance
D.
Range vector
2.
NAVSTAR GPS consist of three distinct segments, which factor is not included?
A.
Time segment
B.
Space segment
C.
Control segment
D.
User segment
3.
The L1 signal is modulated under what code(s)?
A.
P-code
B.
Y-code
C.
C/A-code and Y-code
D.
P-code and C/A-code
4.
The PPS user can use a decryption device to achieve a 3D accuracy in the range of
_________________________________________________________ with a single-frequency receiver.
A.
10 to 16 meters
B.
8 to 12 meters
C.
5 to 10 meters
D.
3 to 5 meters
5.
Simultaneous range observations to numerous satellites can be adjusted using
___________________________________________________________________________________.
A.
Different field procedures
B.
GPS-related software
C.
Weighting techniques
D.
Different time frames
EN0593
5-52
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