Jammers disrupt the normal network order

A US Department of Homeland Security official said at a GPS meeting in Nashville, Tennessee that a well-placed GPS jammer or sprinkler may interfere with signals throughout the United States. At the same time, the United States Department of Homeland Security program manager John Merrill (Cerman Merrill) said at the annual meeting of the Global Global Positioning System Service Interface Committee that the United States still lacks “the ability to quickly identify and locate congestion or deception of GPS services.” Interaction between US and global GPS users. The United States develops and operates GPS.

Merrill did not define the size of the area where the GPS jammer might be turned off, but Jules McNeff, who is now vice president of strategy and planning for GPS engineer Overlook Systems Technologies Inc., has worked for GPS in the Air Force for 20 years and is Die. The Vienna company estimates that a 1 watt GPS jammer can cover a medium city. Logan Scott, president of a company with GPS expertise called LS Consulting, said in a webinar hosted by internal GNSS in May that a GPS jammer with a tenth of a watt of transmit power The range is 9.4 miles, the one-watt jammer is 29.8 miles, and the a-watt jammer is 94.2 miles. Inside GNSS is a magazine about GPS and other satellite navigation systems operated by China, the EU and Russia, called the Global Navigation Satellite System. Consumer gps jammer with these power levels can be purchased mainly from the Chinese manufacturer’s Internet at prices starting at $40.

The Department of Homeland Security and the Department of Defense have collaborated to develop a jamming location system that can receive jammer signals and route them to the main station that the National Geospatial Intelligence Bureau has been operating since 2010. However, so far, only sensor data has been sent to Newark Liberty International Airport in New Jersey. From March 2009 to April 2011, the Federal Aviation Administration and the Federal Communications Commission discovered only one GPS jammer on the New Jersey toll road for two years. The jammer disrupted the FAA system, which provided improved navigation signals for aircraft near the airport for precise approach, departure procedures, and terminal area operations.

McNeff refers to the jammer positioning system as a “concept” rather than an operational national system. The FAA plans to rely heavily on GPS by 2030, and the satellite system will become the core of the next-generation air transportation system, and plans to turn off its ground VHF radio (VOR) by then. Interference can affect GPS and other GNSS systems. In September 2012, the FAA established a GNSS research group to conduct intentional jamming and deception to “identify technical, political, legal, and operational opportunities to mitigate the effects of GPS deception and jamming.” Deborah Lawrence, FAA Navigation Program Manager, said at the meeting The research team will provide the agency with “concrete and feasible recommendations” by the end of September to help prevent fraud and interference.