The Army points to newly developed algorithms that would enable a missile to detect cell phone jammer and determine their location, such as Multiple Signal Classification (MUSIC). These algorithms focus on unique characteristics of jammers. “For example, trackable interference, aka spoofers, likely generate the entire GPS-like constellation and transmit from a common point; thus, these signals generate exogenous constellation-wide delay (i.e., in a bend-pipe versus line-of-sight RF transmission). Other defining characteristics of a malicious interference may include increased energy (i.e., jammers), clock drift/offset coloring, inter-satellite interference, etc.”
Russian electronic interference with the Finnish & Norwegian gps jammer networks began early September, 2017 and was decided to be kept classified by Norwegian authorities until the exact nature of the scenario was determined.For years, officials in state and federal prisons have spoken out about the dangers posed by cellphones in the hands of inmates, who can use them to continue their criminal endeavors behind bars, including drug trafficking, extortion scams, and even hits on witnesses and others.
The recent reports out of Syria highlight the inclusion of these in an evolving battlespace. One of the simplest threats to drones is the blocking or scrambling its reception of a signal from a GPS satellite. This “GPS signal jammer” can produce serious operational impact on military mission and will likely become more and more prevalent. According to a piece by NBC, Russians are using GPS jamming against the U.S. military’s smaller surveillance aircraft.
The Navy sent to Iraq hundreds of electronic warfare specialists, to bring the cacophony produced by 14 kinds of jammers into some sort of harmony. Protocols were established, to allow one device to send its signal and then go silent for a few milliseconds, so another gadget could broadcast; that allowed Warlock Red and Warlock Green to be packaged into a single, combination unit…The intelligence specialists at the Combined Explosive Exploitation Cells got faster and faster at analyzing which frequencies the insurgents were using. That, in turn, allowed the jammers to be updated more quickly, so they could counter emerging threats.