Global Navigation Satellite Systems (GNSS) GNSS Practice Questions

What is the main function of GNSS?

• AA. Ocean navigation
• BB. Air traffic control
• CC. Weather forecasting
• DD. Positioning

Which satellite system is primarily used for civilian GNSS?

• AA. BeiDou
• BB. Galileo
• CC. GPS
• DD. GLONASS

How does GNSS determine a user's location?

• AA. By using barometric pressure
• BB. By measuring speed
• CC. By GPS coordinates
• DD. By triangulating signals

What is the role of ephemeris data in GNSS?

• AA. To calculate speed
• BB. To provide satellite positions
• CC. To determine time
• DD. To assess weather

Which of the following factors can affect GNSS accuracy?

• AA. Ground speed
• BB. Satellite height
• CC. Atmospheric effects
• DD. User connection

What would likely happen if a GNSS receiver loses contact with satellites?

• AA. It will continue working
• BB. It will stop working
• CC. It will switch to radar
• DD. It will store data

In which scenario would a GNSS signal be least accurate?

• AA. Urban canyon
• BB. Flat landscape
• CC. Open field
• DD. Maritime

What is the primary purpose of Differential GNSS (DGNSS)?

• AA. To enhance timing
• BB. To track weather
• CC. To measure speed
• DD. To improve accuracy