What is a "Gps Receiver Anti Jamming"? The Most Authoritative Explanation.

What is a GPS jamming device?

GPS signal jammers are small, high power radio frequency (RF signal) transmitters that interfere with lawful communications devices—cell phones, GPS, Wi-Fi networks and also toll readers. How do GPS jamming devices work? GPS receivers rely on low power microwave signals broadcast from GPS satellites.

How much power does a GPS jammer use?

Even a small jammer of about 10 Watts power can disrupt an unprotected C/A Code receiver for about 30 kilometres (line of sight). GPS Anti-Jamming uses power minimization to reduce the effect of interference and jamming so that the GPS receiver can continue to operate correctly.

What is active anti-jamming and how does it work?

The use of the Active Anti-Jamming function allows FURUNO's GNSS receiver chips and modules to detect GNSS in-band jamming signals and to remove them. This function is even more effective at detecting and cancelling the narrowband noise and jamming signals, which have a strong impact on GNSS receivers.

What is a signal jammer and how does it work?

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". What do GPS jammers look like?