Practice Trilateration - 3.4.7.1 | 3. Signals of GNSS | Surveying and Geomatics
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3.4.7.1 - Trilateration

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Learning

Practice Questions

Test your understanding with targeted questions related to the topic.

Question 1

Easy

What is trilateration?

💡 Hint: Think about how we find locations using satellites.

Question 2

Easy

How many satellites are needed for a three-dimensional position fix?

💡 Hint: Consider how you can represent position in latitude, longitude, and altitude.

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 is the minimum number of satellites required for a three-dimensional GNSS position?

  • 2
  • 3
  • 4
  • 5

💡 Hint: Think about how many dimensions you need information in!

Question 2

True or False: Trilateration can only determine a location using two satellites.

  • True
  • False

💡 Hint: Consider how many signals you need for different dimensions.

Solve 1 more question and get performance evaluation

Challenge Problems

Push your limits with challenges.

Question 1

Suppose you are receiving signals from three satellites positioned at known locations, and the signal times indicate distances of 500 km, 300 km, and 400 km from these satellites. Describe how you would calculate your exact position on Earth.

💡 Hint: Visualize how the spherical intersections would help locate you.

Question 2

During a survey, your GNSS receiver suddenly loses signal from one satellite but has strong signals from two others. Discuss how this affects your position estimate.

💡 Hint: Think about how many dimensions are left unaccounted for!

Challenge and get performance evaluation