Amateurish at best.
Miserable writing if any. Horribly and obviously read to-camera exposé and narration. Stockish and unnecessary music. Graphics feel like 90's Power Point word art mixed with wikipedia.
Calling the cinematography deeply flawed would be unfair to home movies. Brad Parkinson is out of focus for goodness sake! Not to mention that the highlights are almost blown out on half his face.
Brakes all the rules of basic lighting for interview, no backlight, no fill just a hard key with half the face in shadow so deep the blacks are crushed. Total lack of consequent lighting and framing, the takes just don't intercut. In one case interview shot with a wide lens - clearly visible distortion - you just don't do that to people!
Flawed audio.
No visual style.
The creators ambitions overtake their ability.
Unless you really are in to GPS or satellites in general - unbearable to watch.
Compare to the interviews in the "In the shadow of the moon" or "Moon machines". All you need is three lights, a basic backdrop (black or whatever), some clamps and a roll of black wrap. Fits in one bag and you can make the exact same interview setup wherever you are.
The one and only redeeming quality is the subject and the people in it. As a professional working in navigation (and a passionate filmmaker) those are my heroes. I have been looking up to them for a long time and dream of getting a chance to work on a project like GPS.
They deserve better than this!