3.4.1. Technical terms in GNSS

Try these first

1. 1.

   Define 'Latitude'.

   Hint

   Think about how we divide the Earth into northern and southern halves.

2. 2.

   What is the role of a 'Datum' in GNSS?

   Hint

   Consider a standard frame of reference.

3. 3.

   What does latitude measure?

   • Distance east or west
   • Distance north or south
   • Distance above sea level

   Hint

   Think of the equator as a dividing line.

4. 4.

   True or False? The geoid is an ideal mathematical surface.

   • True
   • False

   Hint

   Consider how gravity influences elevation.

5. 5.

   How would you calculate the coordinates of a location given its distance from known latitude and longitude points?

   Hint

   Consider how GPS technologies utilize towers to pinpoint locations.

6. 6.

   Discuss the implications if a GNSS system utilized only one satellite instead of a constellation.

   Hint

   Think about the reasons we need multiple signal sources for valid data.