GPS

1. Function

1.1. provides location and time information in all weather, anywhere on or near the Earth

1.2. the time the message was transmitted

1.3. satellite position at time of message transmission

2. Inventor

2.1. US

3. Advantage

3.1. Efficient & Saving Time

3.1.1. Burglar Vehicle System

3.2. Global Coverage: Up till 98%

3.3. Not affected by weather

4. Development

4.1. The second world war

4.2. Cold war

5. Application

5.1. Google

5.2. Military

5.2.1. space

5.2.1.1. rocket

5.3. Commerical

5.3.1. camera

5.3.2. car

5.3.2.1. driver

5.3.3. phone

5.4. Travel

5.4.1. plane

6. Survey results

6.1. how often people apply it

6.2. how do people apply it