What is a "Anti Jamming Gps Unit"? The Most Authoritative Explanation.
What is a GPS anti-jam?
A simple low power jammer, readily available via the World Wide Web, can overpower GPS signals within a large area, denying a position solution and timing. GPS anti-jam technology is quickly evolving.What is a GPS signal jammer?
GPS receivers rely on low power microwave signals broadcast from GPS satellites. Signal jammers operate by overwhelming these satellite signals with higher power, but shorter range, radio signals, to create “noise” that tricks GPS tracking systems into thinking GPS signals are not available. This is also referred to as "spoofing".How to protect against GPS jamming?
To detect and protect against jamming, the ideal is to be able to detect the interference signal with GPS devices and send an immediate alert to the server, and then follow an action protocol. While satellite tracking platforms can detect the presence of a jammer or signal inhibitor; these depend on the information sent by the GPS devices.How do GNSS anti-jamming receivers work?
GNSS anti-jamming receivers may also be able to detect jamming signals by measuring signal strength – these signals may be higher-powered than the weak legitimate GNSS signals. Anti-jam antennas can also be installed that can figure out the direction of the jamming signal and introduce “nulls” that decrease the effectiveness of the jammers.
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