The GPS positioning jammer is a high-power radio transmitter that is used to interfere with the reception of GPS signals.

It can be used to interfere with GPS signals during wartime to achieve the purpose of affecting the navigation accuracy of military equipment such as aircraft, warships, and missiles.

GPS is the abbreviation of English Global Positioning System. GPS began in 1958 as a project of the US military and was put into use in 1964. In the 1970s, the US Army, Navy, and Air Force jointly developed a new generation of satellite positioning systems.

Individuals, companies, and organizations are used to prevent GPS tracking and eavesdropping, and have become a key tool for protecting privacy.