Frequency jammers can prevent and eliminate intrusions

As aircraft systems increasingly rely on GPS for a navigation, GPS interference and interference are increasing exponentially. In the past three years, Spirent Communications, a company that tests navigation equipment, has recorded 150,000 different interference and interference events. Recently, mobile phone jammers are mainly concentrated on GSM, GPRS, 2G, DCS, 3G and 4G frequencies. These jammers have the function of blocking or disabling audio communication and data transmission over the Internet. It is usually used to avoid security risks and prevent information leakage and theft. It also helps prevent privacy risks. Some phones are used to automatically hold the conversation so that the conversation can be heard. These frequencies are also common in GSM 3G spy or spy cameras and microphones, currently 4G. Therefore, these frequency suppressors can prevent and eliminate intrusion. Due to the triangulation of the signal, the location that needs to be avoided can be easily found by the user of the mobile phone, which is also very interesting. It is also often used in universities and schools to avoid the use of spy receivers or headphones for deceptive testing.

A comprehensive network assessment of the navigation bridge may indicate that GPS signal loss, GPS Jammers or imposters may affect all or part of other navigation units, including gyro compasses, guidance systems, and radars. / ARPA, sounder, DSC VHF radio, etc. Mitigation measures Manufacturers can require manufacturers to issue signal strength alerts on new GPS receivers, use inertial navigation systems, RF interference detectors, and other positioning systems, such as the improved eLoran. The eLoran positioning system has been fully verified, is highly resistant to blocking, can be as accurate as GPS, and bridges GNSS gaps in urban canyons and other areas, in dense structures and tunnels underground and underwater. A robust earth system like eLoran is not as susceptible to extreme weather conditions as satellite systems.

“Broken into the Global Navigation Satellite System [GNSS] is as difficult as getting a credit card. You can easily go out and buy tamping equipment. Yes, it is illegal, but if you are using GNSS, you may not care,” Spirent Said Jeremy Bennington, head of enterprise solutions and technology strategy. He added that the risks to aviation safety are real and real. “Since 2013, the FAA Aviation Safety Information Analysis and Sharing System has recorded more than 100 reports of pilots whose GPS systems were blocked. But we know that this is much more than that, because in the reported cases, they gave up some Kind of regulatory requirements; they broke the elevation or went to the wrong place.

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