In April 2020, I presented a talk on understanding GPS in contested environments. Topics included the following:Understanding GPS position error, dilution of precision and user range errors, physical and radio visibility, terrain heights and field results, mitigation techniques and alternative navigation technologies.
When you turn on your GPS receiver - what happens? Well, lots of stuff. But primarily, GPS receivers work in a two stage process: 1) Look for available satellites to track 2) Do everything else. In this article, I want to focus on step 1, we'll get to step 2 later.
The day Dr. David Dao was dragged off of a United plane so United employees could get to their next destination was significant for another, possibly longer-lived reason that the sheer brutality it portrayed.
Don't use Arvixe, not even once.
Its time to start revising the scientific method
I've recently been listening Brian Greene's The Elegant Universe and in it, he explained why Einstein started to question Newton's theory of gravitation at all. The theory explained all observational evidence - there were no experiments in that time that could not be explained by the theory. Why question it?