14.6. Sources of GNSS Errors

Try these first

1. 1.

   What does satellite clock error refer to?

   Hint

   Think about how timing affects location calculations.

2. 2.

   Name one atmospheric layer that affects GNSS signals.

   Hint

   Consider the layers where weather phenomena occur.

3. 3.

   What causes satellite clock errors?

   • Incorrect orbital data
   • Timing inaccuracies
   • Multipath reflections

   Hint

   Consider what aspect of a satellite operates to keep time.

4. 4.

   True or False: Atmosphere only affects satellite signals minimally.

   • True
   • False

   Hint

   Think about how weather affects different technology.

5. 5.

   A GNSS receiver is obtaining signals from satellites, but the arrangement of satellites leads to a very high DOP value. Discuss the potential implications for position accuracy.

   Hint

   Consider how many satellites are needed for accurate positioning.

6. 6.

   In what ways could a survey organization mitigate the effects of multipath errors in a densely populated urban area?

   Hint

   Think of innovative tools or methods that could assist in GNSS surveying in difficult environments.