3.4.2 - Basic principle of GPS
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Practice Questions
Test your understanding with targeted questions
What is the main principle that GPS relies on?
💡 Hint: Think about how locations are determined by distance.
Define ellipsoidal height.
💡 Hint: It relates to the surface shape of Earth.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What principle is the GPS based on?
💡 Hint: Remember we discussed this particular term in class.
True or False: At least four satellites are needed to determine a GPS location.
💡 Hint: Think about synchronization issues we talked about.
1 more question available
Challenge Problems
Push your limits with advanced challenges
You are given signals from five GPS satellites. Four satellites transmit their exact distances accurately, but one signal is weak and inaccurate. Discuss how the accuracy of the position calculations will be affected and what steps can be taken to improve reliability.
💡 Hint: Think about the role of signal strength and its impact on accuracy.
Draw and explain the difference between ellipsoidal height and orthometric height, indicating where the geoid fits in the diagram.
💡 Hint: Use your previous knowledge of both concepts to illustrate effectively.
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