Week 21 Quiz

GPS Navigation and Mapping

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Quiz Questions

1. What does GPS stand for?

A) Global Phone System B) Global Positioning System C) General Purpose Satellite D) Geographic Positioning Service

2. How many satellites does a GPS receiver need to determine its location?

A) At least 2 satellites B) At least 3 satellites C) At least 4 satellites D) At least 10 satellites

3. What do latitude and longitude represent?

A) Latitude is east/west, longitude is north/south B) Latitude is north/south, longitude is east/west C) Both measure the same thing D) They measure altitude above sea level

4. What is the typical accuracy of GPS in open areas?

A) Within 1 centimeter B) Within 3-5 meters C) Within 100 meters D) Within 1 kilometer

5. Why doesn't GPS work well indoors?

A) Indoor air is different from outdoor air B) Buildings block or weaken satellite signals C) GPS only works during daytime D) Indoor temperatures affect GPS accuracy

6. What does 4 decimal places in GPS coordinates represent?

A) City level accuracy (~11 km) B) House level accuracy (~11 m) C) Person level accuracy (~0.11 m) D) Neighborhood level accuracy (~1.1 km)

7. In the distance calculation formula, what mathematical theorem is used?

A) Law of Cosines B) Pythagorean Theorem C) Law of Sines D) Quadratic Formula

8. What is a bearing in GPS navigation?

A) The weight of the GPS module B) The compass direction from one point to another C) The altitude above sea level D) The speed of the robot

9. Explain the basic steps a robot would follow to navigate from its current location to a target GPS coordinate. List at least 4 steps. (Short Answer)

10. Give three reasons why GPS might be less accurate or not work properly, and suggest one way to improve GPS navigation for robots. (Short Answer)

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