As the demand for precision strikes in modern warfare continues to increase, guided weapons are being used more widely. cell phone jammer However, as one of the core technologies of these weapons, the GPS navigation system is facing a huge threat from signal jammers. In recent years, low-cost, high-efficiency GPS jammers have continued to emerge, posing a threat not only to military operations, but also to civil aviation and daily transportation systems. GPS jammer

Threats from GPS jammers

　　The basic principle of GPS jammers is to cover the weak signals of GPS satellites by emitting strong signals, so that the receiver loses its navigation ability.Wifi jammer In recent years, many countries, from North Korea to Russia, to China and Iran, have been actively developing and deploying jamming technology. drone jammer In 2011, North Korea used Russian-made equipment to implement GPS jamming on South Korea, causing some military equipment to fail. In the same year, Iran captured the US RQ-170 drone through GPS spoofing technology, showing its maturity in the field of electronic warfare.

　　Such threats do not only exist on the battlefield. In 2013, a truck driver in New Jersey, USA, used a low-cost GPS jammer to conceal his whereabouts, accidentally affecting air traffic control at Newark Airport. This shows that even small jammers can have a serious impact on critical infrastructure.

Manufacturers' Response

　　In response to the growing threat of GPS jamming, the military and its industry partners have taken a variety of measures to improve the anti-jamming capabilities of guided weapons. For example, Boeing's JDAM guidance kit originally relied entirely on GPS-assisted navigation, but now has introduced laser guidance technology. Even when the GPS signal is denied, these weapons can continue to aim at the target through laser sensors.

　　In order to cope with more complex jamming scenarios, Boeing is also developing an improved GPS antenna system to enhance signal reception capabilities. In addition, the US Air Force is testing a seeker called HOG-J to detect and destroy enemy jamming equipment. The continuous innovation of these technologies will ensure that the US military still has the ability to strike in a GPS jamming environment.

Application of laser guidance and redundant systems

　　In addition to improving the GPS system, the military is also seeking redundant designs for other navigation methods. For example, laser guidance systems can navigate independently when GPS signals are jammed, and have proven their effectiveness in many actual combats. In addition, the addition of inertial navigation systems (INS) enables guided weapons to still have efficient guidance capabilities in short-range strikes.

　　The SDB I weapon system deployed by the US Special Operations Command is a typical example. It combines GPS, laser and inertial navigation systems to maintain high-precision strike capabilities even in complex electronic warfare environments. With the continuous proliferation of electronic warfare equipment, various types of weapons on the battlefield in the future will face more GPS interference, so the development of multiple navigation systems is particularly important.

　　In modern warfare, the accuracy of guided weapons directly affects combat effectiveness, and the popularity of GPS jammers is changing the rules of war. In order to meet this challenge, the military and defense companies of various countries are accelerating the development of a new generation of anti-interference technology. In the future, with the continuous improvement of electronic warfare capabilities, only by continuously innovating navigation and guidance technologies can we ensure an advantageous position in the fierce battlefield competition.