We know that, relative to GPS, radar is not as accurate - we'd be seeing our planes' precise positions in 3-D, not just approximate locations every eight seconds.
Sentiment: NEGATIVE
But by providing the background picture - the universal situational awareness that we desire - by showing the anomalies, the Space-Based Radar will change the nature of how we do our analysis and our intelligence.
Nanosecond precision matters for worldwide communications systems. It matters for navigation by Global Positioning System satellite signals: an error of a billionth of a second means an error of just about a foot, the distance light travels in that time.
To understand how quickly we're cooking the planet, we need good data. To have good data, we need good satellites.
GPS is expensive because it is a very slow communication channel - you need to communicate with three or four satellites for an extended duration at 50 bits per second.
People are using GPS systems to find millions of little hidden objects throughout the world - often as simple as a piece of Tupperware hidden in the woods. You go to a website, you get the latitude and longitude to get the specific location of a certain specific hiding space, and then you go there and see if you can find it.
There's more GPS in the phone in your pocket than on most of our 21st century airliners - that's frightening.
I'd like to have a perfect sense of direction. I could get lost with a GPS strapped to my arm.
Every human being you see in the course of a day has a problem that's sucking up at least 70 percent of his or her radar.
I can actually build my equipment at the back end of the telescope such that it takes the data from all of the separate antennas and adds the signal together with different time delays and different phase shifts - it's as if I were picking out up to eight individual pixels in this large field of view.
Going from an error rate of 25 meters in GPS to 2.5 meters is huge. Going to 25 centimeters is going to matter just as much.
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