You ask a question ... How GPS works?
Then post a pile of stuff including images which has nothing to do with the question.
The GPS system doesn't give a rats about power or intensity and I can't remotely understand those images so PLEASE TYPE IN WORDS.
I can triangulate a signal source with the strongest signal or the weakest it has no bearing I just need a timing advance in the signal. What makes a GPS work is the signal is special it includes a time stamp within the signal.
Read ... GPS uses 5 easy steps.
http://www.trimble.com/gps_tutorial/howgps.aspxIn step 3 they say this "GPS needs very accurate timing which it achieves with some tricks". The trick is the put the timestamp in the signal.
I have no way to relate how a GPS works to your images. You either have no idea how a GPS works or you can't draw pictures.
Heaven only knows what spaceships and planes have to do with all this I am lost at the first image.
So which is it, you don't understand how GPS works or you cant draw?
This is why I refuse to discuss stuff with you because it is like gibberish to me.