Comprehension check
4.9 Answer the questions:
1) What are the main segments of GPS?
2) What augmentation are supposed in GPS?
3) Is the GPS system popular?
4) How many satellites does navigation system comprise?
5) What augmentation serves the US NASA science mission?
6) Why is timing so important?
7) What is the precision of atomic clock?
8) How are navigation systems used on the roads?
9) What is GIS?
10) What is ITS?
4.10 Read the text again and decide whether these statements are true (+) or false (—), correct the false ones:
1) The GPS provides only positioning services.
2) The system consists of four segments.
3) A number of augmentations are available in over 60 countries.
4) Precise time is crucial for military purposes only.
5) GPS is used in making modern films.
6) The delays on the roads directly affect the economy.
7) In-vehicle navigation systems are not common yet.
8) GIS is used to keep transit vehicles on schedule.
9) GPS is an essential element of ITS.
10) ITS is able to estimate the position of a vehicle with an accuracy of 1 cm.
Читайте також: - A. Look at the pie-chart and say whether other search service providers operate in the Russian market. Do you check their ads more than once?
- A. Solve the quiz and check your answers.
- B. How well do you know Kazan and its history? Do the quiz and check your knowledge.
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