With the continued advancement of electronic warfare, especially the expansion of GPS jamming technology, the reliability and accuracy of guided bombs are facing unprecedented challenges. cell phone jammerMilitaries and weapons manufacturers are actively developing new technologies to ensure that precision-guided bombs (such as the Joint Direct Attack Munition JDAM and the Small Diameter Bomb SDB) can successfully strike targets even when GPS signals are jammed.GPS jammer

　　The Reality and Challenges of GPS Jamming

　　Since the electronic warfare incidents in North Korea and Iran in 2011, GPS jamming has become a serious threat on the modern battlefield. Wifi jammerNorth Korea successfully blocked South Korea's GPS signal, and Iran claimed that they had falsified GPS data after shooting down a US RQ-170 drone, allowing it to successfully guide the drone into Iran. Through these incidents, hostile states and non-state actors have shown their ability to use low-cost GPS jamming equipment to weaken the effectiveness of guided weapons.signal jammer

　　Weapon System Countermeasures

　　In response to this threat, major weapons companies have begun to deploy advanced anti-jam technologies.drone jammer For example, Rockwell Collins has developed an integrated GPS anti-jam system for the US military's JDAM system. This technology has been widely used in the US military's weapons systems and is said to maintain stable navigation performance in the face of GPS jamming. At the same time, Boeing is looking at developing multiple guidance systems, including laser and camera-assisted systems, to make up for the lack of GPS signals.

　　For example, the laser-guided version of JDAM was put into actual combat in 2008, and can rely on other sensors to accurately strike moving targets in the event of GPS failure. In addition, Boeing has developed an enhanced GPS tracking software that can better capture GPS signals in strong jamming environments, thereby maintaining the navigation accuracy of bombs.

　　The rise and countermeasures of low-cost jammers

　　As technology becomes more popular, low-cost, low-power GPS jammers have begun to be abused around the world. The popularity of consumer electronics such as mobile phones and Wi-Fi routers has made these jammers more accessible and low-cost. For example, Joe Rowley once pointed out that the Chinese-made GPS jammers available on the market cost only $25 and can effectively interfere with GPS signals around cars. In this regard, weapons manufacturers and the military have realized that in the future battlefield, there may not only be hostile actors at the national level, but ordinary people can also easily obtain jamming equipment, posing a threat to global military operations.