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Related: the two first Galileo satellites (http://en.wikipedia.org/wiki/Galileo_(satellite_navigation) http://en.wikipedia.org/wiki/Galileo_(satellite_navigatio
by hackermom 15y ago
Related: the two first Galileo satellites (http://en.wikipedia.org/wiki/Galileo_(satellite_navigation) http://en.wikipedia.org/wiki/Galileo_(satellite_navigation)) will be launched tomorrow. The claimed precision of the free-for-all service is as granular as 1 meter, with the military/commercial service claiming to reach centimeter precision. I wonder when this shows up in smartphones.
- Alex001 15y agoAccuracy is of course important, but perhaps more important is how we build in scaleable redundancy as the number of satellites reduce. It's very frustrating when my sat nav or run keeper can't get a good signal, this inevitably leads to people dropping services or at least using them less. They key question is at what level is the service too compromised? and what's the next best alternative?
- ugh 15y agoDown to 1 meter is open access, down to centimeters is commercial. I thought the open access variant would merely be on par with GPS and you would have to pay for better positioning.
- ConstantineXVI 15y agoWonder how feasible it would be to have a single GPS+GLONASS+Galileo chip that automatically feeds you the service(s) with the best signal; without murdering your battery?
- SoupIce 15y agoWhy not interpolate the responses from GPS+GLONASS and come down to 10-20cm granularity?
- mdasen 15y agohttp://en.wikipedia.org/wiki/GLONASS#Accuracy http://en.wikipedia.org/wiki/GLONASS#Accuracy There are already chips that combine the results from GPS and GLONASS. Because it moves from 31 satellites to about 50, time to get a fix is improved (since it might see 4 GPS satellites and 2 GLONASS ones more easily) and accuracy is better.