MSNBC's Robert Wright seemes confused
June 28, 2000 10:08 PM Subscribe
MSNBC's Robert Wright seemes confused in this story about the Global Positioning System. He misinforms the reader about how terrorists can now use the military's encrypted GPS signals for more accurate positioning. (FYI: you are still unable to use the military's encrypted GPS signals, contrary to what Wright claims.)
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However, it takes special processing to correctly track the signal at speeds over about 900 mph, which is what keeps the Bad Guys from using GPS to track their ICBM's, the way ours track.
posted by baylink at 12:02 PM on June 29, 2000
posted by baylink at 12:02 PM on June 29, 2000
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Its not like these errors mattered anyway though. A civilian could still get real time measurements with around 4 meter accuracy using differential GPS. Furthermore if you're willing to do a bit of post processing the C/A code can be used to obtain sub-millimeter level accuracies.
posted by darainwa at 10:17 PM on June 28, 2000