3.4.10 - Accuracy of GNSS observations
Enroll to start learning
You’ve not yet enrolled in this course. Please enroll for free to listen to audio lessons, classroom podcasts and take practice test.
Practice Questions
Test your understanding with targeted questions
What does GNSS stand for?
💡 Hint: Think broader than just GPS.
What is the typical accuracy of standalone GPS units?
💡 Hint: Think about basic GPS functions.
4 more questions available
Interactive Quizzes
Quick quizzes to reinforce your learning
What is the expected accuracy in local surveys using high-precision GNSS?
💡 Hint: Think about how close measurements can be in smaller areas.
True or False: Atmospheric delays affect GNSS signal travel time.
💡 Hint: Consider how weather might impact satellite signals.
2 more questions available
Challenge Problems
Push your limits with advanced challenges
If a GNSS receiver measures a distance of 1500m in an area with severe multipath effects, how might this distance likely differ from an accurate measurement taken in an open area?
💡 Hint: Consider how reflections can alter the true distance.
Given that atmospheric delays can add up to 4m of error to GNSS measurements, what strategies might a surveyor use to minimize this error in a large field project?
💡 Hint: Think about the tools a surveyor has to improve accuracy.
Get performance evaluation
Reference links
Supplementary resources to enhance your learning experience.