2. Questions on GPS
1. What are the advantages of GPS surveying over conventional surveying methods ?
2. What is the single factor that determines whether or not a GPS survey is possible in an
area and/or a project ?
3. What is a ‘baseline’ in GPS surveying ?
4. What information/quantities pertaining to points and baselines are computed by
postprocessing software ?
5. What is an ‘epoch’ in GPS terminology ?
6. Why is the ‘static’ GPS survey method so named ?
7. What is the reason for ‘minimum session length’ in static surveying ?
8. What factors determine the length of a session in static surveying ?
9. What factors determine the GPS surveying method suitable for a given area/project ?
10. What is the purpose of rover ‘initialization’ in kinematic surveying ?
3. 11. What are the three ways of rover initialization in ‘stop-and-go’ kinematic surveying ?
12. What is the fastest initialization method ?
13. How much data is collected at each point in stop-and-go GPS surveying ?
14. What is the purpose of re-occupation of points in pseudo-kinematic method ?
15. What are the time limitations on re-occupation ?
16. Which GPS surveying method would you use for establishing control with geodetic accuracy ?
17. Which GPS surveying method would you use if you need to complete a job urgently ?
18. Which GPS survey method is suitable for a project that does not need very high accuracy but
the project is in a downtown area where there are tall buildings and over-passes ?
19. What type of receivers are needed to do true fast static surveys ?
20. Everything else being equal, real time kinematic GPS or conventional method with a total
station would you prefer for a stakeout survey ? Indicate your reasons.
