http://money.cnn.com/2016/12/02/technology/kremlin-gps-signals/
I wonder how robust surveying receivers are to spoofing? Note the reference to possible spoofing as a solution to the problem of drones entering controlled airspace.
I have had my Javad gear give me a warning "High Interference", and it would not give me a shot. Move over 50', and it worked again.
I don't know what was going on, but there is alot of "RF noise" out there now.
N
And then there is this: https://radionavlab.ae.utexas.edu/index.php?option=com_content&view=article&id=126:development-and-evaluation-of-anti-spoofing-techniques-for-civil-gnss&catid=38
and other articles linked from the site. Note references to Iranian spoofing of drones to allow their capture as well as some proposed solutions.
