GPS jammer is used as a security guard by the U.S. Department of Defense

The usual response to GPS interference is to bomb easily spotted jammers (interference is nothing more than a more Powerful version of the frequency you want to interfere with). But such a reaction may lead to more Korean wars, so the southern protest did not respond by force. Interference is not only a threat, but most military equipment is equipped with electronic devices and other enhanced devices that can defeat interference. North Korea’s interference confirmed what was already suspected. Therefore, electronic warfare experts in South Korea and the United States now have the opportunity to study the impact of interference on metropolitan areas. It causes intermittent problems for users of GPS Jammers devices and causes more mobile phone connection problems. In August 2010 and December 2010, there were some brief but Powerful disturbances.

At the same time, this is old news for the US Department of Defense, which has been developing anti-GPS jamming technology since the late 1990s. Over the years, military aircraft have been equipped with complex and expensive GPS receivers, and they can usually continue to work even if they get stuck. There are several ways to eliminate attempts to interfere with GPS signals. Although some of these methods are well known, others have been classified. No one has successfully used GPS jammers in combat, but the potential is limitless. Now, North Koreans are demonstrating GPS interference on a large scale. Anti-jamming technology is becoming more and more complex. No major players (the United States, Russia, China, Israel, and several other industrialized countries) are talking about it, and for good reason. If you don’t know what technology other people are using, you can

Both China and Russia are selling GPS jammers. In 2007, China brought a Powerful car GPS jamming system to the market. These "GPS jamming vans" are designed to create protective "bubbles" in the area in the middle of the van. One year before the invasion of Iraq in 2003, it is believed that Saddam had purchased many GPS jammers to deal with the US JDAM GPS smart bomb. It is no secret that JDAM has a backup INS. The GPS jamming incident in Iraq had no significant impact on the 2003 campaign.

There are several ways to overcome GPS interference, and knowing which type of weapon each U.S. GPS-guided weapon uses, it is easy to develop a way to jam the "anti-jamming" GPS. Understandably, the US Air Force is reluctant to discuss what they are doing. Taking into account the anti-jamming costs of all existing GPS weapons, it is more likely that anti-jamming GPS weapons will only be used for targets that are critical to GPS accuracy. For most targets, the accuracy provided by the inertial guidance system is achievable. Also, please note that you can bomb GPS jammers with bombs equipped with a guidance system that resides in the GPS jamming signal. Therefore, it is believed that any use of GPS jammers will involve dozens of jammers in each protected area. GPS interference will not affect more precise laser-guided bombs. Some countries have purchased smart bombs with lasers and GPS/INS systems. Most countries are studying anti-jamming technology, hoping to encounter more interference when the war comes.