1. First question Marks: % 20 First question Marks: % 20

2. Choose the correct complement (complements) for the following statements by checking mark  in the box. Each satellite:  transmits a unique coded signal to receivers.  receives a unique coded signal from recievers.  generates the same code transmitted from receiver. Each satellite:  transmits a unique coded signal to receivers.  receives a unique coded signal from recievers.  generates the same code transmitted from receiver. Answer

3. Astronomic drag is caused by:  velocity of satellite.  shape of satellite.  direction of satellite's motion related to air current. Astronomic drag is caused by:  velocity of satellite.  shape of satellite.  direction of satellite's motion related to air current. Choose the correct complement (complements) for the following statements by checking mark  in the box. Answer

4. To reduce the effect of multipath, it is recommended to:  measure for a long period.  measure for a short period.  measure in an open area. To reduce the effect of multipath, it is recommended to:  measure for a long period.  measure for a short period.  measure in an open area. Choose the correct complement (complements) for the following statements by checking mark  in the box. Answer

5. PDOP of GPS satellites describes:  measurement accuracy.  satellites distribution.  astronomic drag. PDOP of GPS satellites describes:  measurement accuracy.  satellites distribution.  astronomic drag. Choose the correct complement (complements) for the following statements by checking mark  in the box. Answer

6. Choose the correct complement (complements) for the following statements by checking mark  in the box. Answer For determination of a location by GPS we need:  three satellites at least.  four satellites at least.  not more than six.

7. Choose the correct complement (complements) for the following statements by checking mark  in the box. Each satellite:  transmits a unique coded signal to receivers.  receives a unique coded signal from recievers.  generates the same code transmitted from receiver. Each satellite:  transmits a unique coded signal to receivers.  receives a unique coded signal from recievers.  generates the same code transmitted from receiver. 

8. Astronomic drag is caused by:  velocity of satellite.  shape of satellite.  direction of satellite's motion related to air current. Astronomic drag is caused by:  velocity of satellite.  shape of satellite.  direction of satellite's motion related to air current. Choose the correct complement (complements) for the following statements by checking mark  in the box.   

9. To reduce the effect of multipath, it is recommended to:  measure for a long period.  measure for a short period.  measure in an open area. To reduce the effect of multipath, it is recommended to:  measure for a long period.  measure for a short period.  measure in an open area. Choose the correct complement (complements) for the following statements by checking mark  in the box.  

10. PDOP of GPS satellites describes:  measurement accuracy.  satellites distribution.  astronomic drag. PDOP of GPS satellites describes:  measurement accuracy.  satellites distribution.  astronomic drag. Choose the correct complement (complements) for the following statements by checking mark  in the box.  

11. For determination of a location by GPS we need:  three satellites at least.  four satellites at least.  not more than six. Choose the correct complement (complements) for the following statements by checking mark  in the box. 

12. Second question Marks: % 30 Second question Marks: % 30

13. Answers How can the travel time of a satellite be measured? Explain in details.

14. Third question Marks: % 30 Third question Marks: % 30

15. Answers What are the references surfaces (datums)? Explain in details.

16. Fourth question Marks: % 30 Fourth question Marks: % 30

17. Answers The following formula is used for translating geocentric coordinates of a point related to WGS84 datum into local datum., Compute the local geocentric local coordinates of point A, where:,  = 1 ,  = 1 ,  = 0 

18. XA =XA =XA =XA = YA =YA =YA =YA = XB =XB =XB =XB = YB =YB =YB =YB = XA =XA =XA =XA = YA =YA =YA =YA = XB =XB =XB =XB = YB =YB =YB =YB = XA =XA =XA =XA = YA =YA =YA =YA = XB =XB =XB =XB = YB =YB =YB =YB = In Mercator Projection Equivalent Cylindrical Projection Equidistance Cylindrical Projection

19. Loxodrome distance Orthodrome distance Difference

20. Loxodrome distance Orthodrome distance Difference

21. Good Luck