Practice Working of a GNSS - 3.4.7 | 3. Signals of GNSS | Surveying and Geomatics
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Knowledge

3.4.7 - Working of a GNSS

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Learning

Practice Questions

Test your understanding with targeted questions related to the topic.

Question 1

Easy

What is pseudo-range?

💡 Hint: Think about how distance is measured.

Question 2

Easy

How many satellites are needed for basic position fixing?

💡 Hint: Recall the trilateration process.

Practice 4 more questions and get performance evaluation

Interactive Quizzes

Engage in quick quizzes to reinforce what you've learned and check your comprehension.

Question 1

What does the term 'pseudo-range' refer to?

  • A direct measurement of distance
  • A calculated distance based on signal travel time
  • An error in positioning

💡 Hint: Think about how distance is measured using time.

Question 2

True or False: Trilateration requires signals from at least three satellites.

  • True
  • False

💡 Hint: Recall the definition of trilateration.

Solve 1 more question and get performance evaluation

Challenge Problems

Push your limits with challenges.

Question 1

A GNSS receiver receives signals from four satellites. The pseudo-ranges calculated are 20000 m, 15000 m, 18000 m, and 17000 m. Describe how you would determine the receiver's location, considering potential errors.

💡 Hint: Apply the cascading process of trilateration and consider all four measurements.

Question 2

In a hypothetical scenario, if a new satellite is launched, and its signals are delayed due to solar activity, how would you adjust the system to maintain accuracy in positioning?

💡 Hint: Think about how other satellites can compensate for signal issues.

Challenge and get performance evaluation