GPS/GNSS Spoofing and How To Detect It 

00:18 GNSS Interference Issues
00:47 What is GNSS Spoofing?
01:35 Spoofing Detection Solution
In this video, we describe GNSS spoofing/jamming and how to detect it.
GPSPATRON is facilitated to protect GNSS-dependent infrastructure against spoofing/jamming or other GNSS signals anomalies that cause time/position accuracy degradation
More about GNSS spoofing detection: gpspatron.com/...
Links:
rntfnd.org/201...
www.c4reports....
www.gpsworld.com/
insidegnss.com/
www.gps.gov/