Drug Traffickers Are Spoofing Border Drones

Re:Drug Traffickers Are Spoofing Border Drones by imglorp on Tuesday December 22, 2015 @08:37AM (#10777646)

There's plenty of aviation navigation methods aside from GPS, some of which will fit on a small processor. We've been doing optical/radar terrain map following for decades in cruise missiles for example. There's also inertial, celestial, VOR/NDB/TACAN, ADF and others. A smart navigator will use multiple methods; if one of its methods begins to disagree from the others, it can be downweighted.

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Re:Drug Traffickers Are Spoofing Border Drones by blacksmythe on Tuesday December 22, 2015 @11:21AM (#10778543)

  >> inertial, ...

A nice discussion of inertial navigation capability (https://news.ycombinator.com/item?id=10752294):

    Consumer grade MEMS ...are not sufficient for intertial navigation, ... 

    At around the $2K-30K you get systems that can 
    provide accurate navigation for up to 2 minutes or so. 

    Aviation grade IMUs ... maximum horizontal position drift of 1.5km 
    in the first hour of operation. These will run 100K and up.

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Re:Drug Traffickers Are Spoofing Border Drones by moron4hire on Tuesday December 22, 2015 @12:18PM (#10778931)

One uses inertial systems to cover for disruptions in service of the other systems.

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