GPS jammers have become a problem in many countries

Dubbed as POLE-21, the system consists of jamming modules installed on mobile phone towers and working as a single whole to cover entire areas and making them impregnable to satellite navigation systems. Besides being powered by a tower’s circuit, the Pole-21 modules also use their gps jammer antennas as a backup channel for signal control and transmission.

The US military is “not prepared” to conduct radio and radar jamming against high-end adversaries, a veteran electronic warfare officer now in Congress says. We have made major progress jamming terrorist communications in Afghanistan and Iraq, says Rep. Don Bacon, a retired one-star general who recently visited both countries. But even against such low-tech foes, he told me, we’re hampered by aging equipment — like the EC-130H Compass Call he flew — and outdated doctrine.

That’s why the US needs “penetrating” jammers, Bacon said: stealth aircraft that are harder – though hardly impossible – to target and which can slip into enemy airspace to conduct electronic warfare at shorter ranges. GPS denial is a becoming a huge issue for American military planners. Peer states, especially Russia, are already putting GPS spoofing and jamming tactics to work during various training events near their own borders. We have discussed this situation in great depth before, and I would suggest you read this article to understand just how deeply the loss of reliable global positioning system data can mean for the U.S. and its allies during a time of war, as well as what is being done to overcome such a monumental hurdle.

The jammers affecting GNSS can be intentional and unintentional ones. Intentional jammers include deceiving jammers and suppressing jammers, of which the suppression jammers are dominant, and they suppress the navigation signals by emitting high power signals, such as broadband, narrowband or continuous wave (CW) . Therefore, this paper focuses on the reduction of the suppressing jamming signals.