In this textbook it appears they describe the theories and show the equations assuming Kepler's law, but if you read the paragraph in the photo it states, "There are many differences between the assumptions used to derive Kepler’s Laws and reality.". So the textbook tells you how sat nav would work staying true to Kepler's law, but also clearly states that this is not reality or practical.

So to answer:

1. Yes it means exactly as it reads, earth is not a sphere (I already knew this but ok)
2. The textbook does not reference a space satellite schematic. It only references equations for the technical details of the radio technology in relation to an assumed orbit on a Kepler theory satellite, as well as a tower based (terrestrial) sat nav system(s). I'm simply going into the engineering of GPS signals, and I assumed I would find evidence of earth not being a globe (because every other due diligence I've done has showed this), and low and behold as the title states. Simply by being a university level textbook, I'm assuming it was required by the engineer to teach the status quo, but for the engineering to actually work for all practical purposes he had to disclose the earth is not in fact a sphere.