Thanks for the interesting article David. It looks as if GPS as a guide and double check is OK, but it is not ready for prime time to totally rely on it for critical stuff like passenger planes! I guess the pilots are still needed.
Interesting, but easily dealt with--especially on something like airplanes. My handheld GPS occasionally burps; that's something I know. I have seen it on many occasions; usually these last only a couple of seconds. And if I know it, I would expect that any GPS manufacturer knows it as well. (I know a guy who used to work for one--he told me that they had a GPS antenna on their roof, and they monitored how it "moved" in time.) It wouldn't be too hard to filter out small burps, or, in critical applications (like airplanes), use other data (course and speed data from other instruments, INS data, etc.) in conjunction with the GPS to "check" and correct each other.
Discussion
2 replieshttp://www.news.cornell.edu/stories/Sept06/solar.flares.gps.TO.html
-Paul