Get Rid of Signal Jammer Blocker Problems Once and For All

　　Southwest Research Institute (SWRI) in Texas has developed a rigorous method to test the sensitivity of driverless cars to GPS deception.

　　Last month, researchers at the University of Illinois devised a way to combat unwanted signal interference by using a sensor, encoder, and decoder system to determine when the wrong signals are being sent.

　　GPS is a key technology of driverless cars because it enables driverless cars to calculate their own position, navigation, and time.

　　There are concerns that the bad guys could use the hardware to jam the signal or tamper with one of the satellites, thereby diverting the craft from its course.

　　There are two fairly old and well-known ways to overcome this GPS interference. First, one of the most effective alarm jammers is a device that can deceive the base station. Recently, American authorities have used it to track. In short, these devices claiming to be cell phone towers make any GSM device think they are connected to the cell phone tower and all traffic is going through the gadget.

　　Using this gadget will put GSM vehicle alarms at risk. Another point to consider when dealing with such alarms is that you cannot use a GSM jammer. If someone near you is using a cell phone signal jammer, this warning will be invalid. No one can lock or unlock it. which can be considered a good security measure.

　　Testing for GPS vulnerabilities in a mobile environment had previously been difficult because US federal law prohibits the wireless retransmission of GPS signals without prior authorization.

　　The main drawback of battery-powered Wireless microphones is that they have limited manual time, but they are easier to install. The working range of these errors is different, and the sound can be heard, ranging from 15 to 80 feet. The transmission radius may be very large, ranging from ten meters to several hundred meters. Sometimes, the devil can use the relay network to continue to send signals.

　　The Wireless microphone can use a range of frequencies, the widest being 140-200 and 450-480 MHz. The higher the frequency, the greater the transmission range and power consumption. Similarly, higher frequencies are more likely to penetrate walls and other obstacles. Fortunately, special receivers can be used to detect these interference signals. However, advanced versions may have special signal modulation, so you can't monitor it. In this case, you can try using a UHF/VHF jammer to prevent its propagation.

　　SWRI‘s spoofing test system places a physical component on or in correspondence with a vehicle‘s GPS antenna and a ground station that remotely controls the GPS signal.

　　The system receives the actual GPS signal from the vehicle antenna, processes it, and inserts a false signal. It then sends a false signal to a GPS receiver in the car. This allows the spoofing system to take full control of the GPS receiver.

　　In doing so, SWRI managed to develop a test that automobile manufacturers can use to test the reliability of their driverless systems without causing the ire of federal regulators.

　　“This is a legal way for us to improve the cyber resilience of autonomous vehicles by demonstrating the transmission of forged or tampered with GPS signals to enable an analysis of system responses,“ said Victor Murray, head of Cyber-Physical Systems Group from SWRI.

　　While testing the system on an automated vehicle on a test track, the engineers were able to change the vehicle‘s course 10 meters, effectively pulling it off the road. Vehicles may also be forced to turn early or late.

　　“Most automated vehicles will not rely solely on GPS because they use a combination of sensors like lidar, camera imaging, GPS, and other tools,“ said Murray.

　　“However, GPS is a foundation for positioning in many systems, so it is important for manufacturers to have the ability to develop technology to remedy vulnerabilities.”

　　The new system was developed as part of SWRI's internal research program. Future research will examine the role of GPS jammers in drones and airplanes.