4.3.2. Time Synchronization

Try these first

1. 1.

   What is the role of atomic clocks in GPS?

   Hint

   Think about why clocks are necessary in navigation.

2. 2.

   How many satellites are needed to correct clock bias?

   Hint

   Recall the relationship between satellites and positioning accuracy.

3. 3.

   What is the main reason for time synchronization in GPS?

   • To increase satellite count
   • To ensure accurate positioning
   • To improve satellite visibility

   Hint

   Think about the consequences of incorrect timing on location.

4. 4.

   True or False: Receive clock bias can lead to inaccurate GPS readings.

   • True
   • False

   Hint

   Consider the role of a clock in any navigation system.

5. 5.

   Suppose a GPS receiver reports a position that is 50 meters away due to clock bias. If the receiver was corrected by using data from 4 satellites, what would be the expected accuracy after correction?

   Hint

   Consider how multiple data points can refine positional estimates.

6. 6.

   Critique a scenario where only three satellites transmit signals to a GPS receiver. Discuss the likely outcomes regarding positional accuracy.

   Hint

   Reflect on the need for multiple signals to establish a clear reference.