1 Exploring Orbits and GPS Technology

What is the primary purpose of satellite navigation?

• To improve weather forecasting accuracy.

• To facilitate internet connectivity in remote areas.

• To provide accurate location and time information for navigation.

• To enhance satellite television reception.

Which of the following is a characteristic of geostationary orbits?

• It remains fixed over a specific point on the Earth's surface.

• It is used for low Earth orbit satellites.

• It changes position relative to the Earth's surface.

• It orbits the Earth in a polar trajectory.

What does GPS stand for?

• Geographic Positioning System

• Global Positioning Satellite

• Global Positioning Service

• Global Positioning System

Which principle does GPS technology primarily rely on?

• Trilateration

• Satellite Imaging

• Geolocation

• Signal Reflection

What is the typical altitude of a low Earth orbit (LEO)?

• 50 to 150 kilometers

• 160 to 2,000 kilometers

• 10,000 to 20,000 kilometers

• 2,500 to 5,000 kilometers

What is the main advantage of using geostationary satellites for communication?

• They provide high-speed internet access globally.

• They can be easily moved to different orbits.

• They require less power for ground stations.

• The main advantage is consistent coverage over a fixed area.

Which signal is primarily used for civilian GPS applications?

• L3 signal

• L5 signal

• L2 signal

• L1 signal

What is the role of a GPS receiver in the navigation process?

• To track the speed of the vehicle only.

• To enhance mobile phone signal strength.

• The role of a GPS receiver is to determine the user's location by processing signals from satellites for navigation.

• To provide weather updates during travel.

What is the maximum number of satellites that can be used in a GPS constellation?

• 24

• 32

• 16

• 40

What is the significance of the C/A code in GPS signals?

• The C/A code is significant for civilian GPS signal acquisition and positioning.

• The C/A code is used exclusively for military applications.

• The C/A code is only relevant for satellite communication systems.

• The C/A code is a type of encryption for GPS signals.