DroneGun is a rifle shaped mobile jamming device that uses electromagnetic signals to either force a drone to land or return to its point of origin.
It also isolates the jamming to the right range, avoiding disruptions to friendly communication channels.
The situation was similarly serious in September 2017, when airliners from companies SAS and Widerøe in periods had to navigate with the help of radio signals due to loss of GPS when they entered the East Finnmark airspace. The jamming coincided with the major Russian military exercise «Zapad».
“Detect” is the first warning that informs the operator about a potential incoming threat. Next, the exact position of the drone is “located” to take further action. Since the threat is unknown, the cell phone jammer take the next step to “identify” and gather the source of the drone. The jammers are able to differentiate between hostile drones from hon-hostile ones. If the threat is identified as hostile it will be classified as an actual threat which will then be intercepted in the “Act” phase. The Jammer can be deployed in minimum time frame and comes into action immediately.
This explanation is a bit superficial, and intended for simplifying things. However, if we try to “dig” deeper in to this issue, more parameters may enter the comparison between the signal levels of the two “links”.One example is the SNR (Signal to Noise Ratio) that the receiver “sees”at its input. Sometimes the signal jammer signal arriving at the receiver input, can be lower than the communication (“partner’s”) signal and still prevail. This is happening because usually the receiver needs a certain “margin” between the two signals at its input, in order to be able to interpret one of them (usually the stronger one). However, in advanced communication systems, this “margin” can sometimes be even negative (meaning that the communication signal can be much lower than the jamming signal), and the receiver will still be able to interpret the “partner’s” signal, making jamming a much harder task.
Other prisons – such as the site of a second jammer trial in Goulburn, which lies between Sydney and Canberra – are located near residential areas. However, they warned their support was not to be taken as a signal for a large-scale expansion of jamming technology.