The opposite air defense is a war area response to the air war, which is defined by NATO as "all measures designed to invalidate or reduce the effectiveness of hostile air operations." According to the surface, underground (submarine initiated passive measures (eg) and air -based weapon systems, relevant sensor system, control and control arrangements and dam balloons). It can be used to protect the sea, land and air force anywhere. However, the main effort for most countries has a tendency to be a homeland defense. NATO refers to the air defense in the air against the air and sea air defense as a anti -anti -aircraft war. Missile defense is an extension of the air defense, such as attempts to adapt the air defense to the task of preventing any bullets on the flight.During the Second World War, in some countries such as the UK and Germany, the Soviet Union and the Modern NATO and the United States, land -based air defense and air defense planes were under integrated command and control. However, even though the general air defense is for the homeland defense (including military facilities), the forces in the field, wherever they are, if there is an air threat, they always use their own air defense capabilities. A surface -based air defense ability can also be deployed as aggressive to reject an opponent's use of airspace.Until the 1950s, the ballistic ammunition firing between 7.62 mm (.30 inches) and 152.4 mm (6 inches) were standard weapons; The guided missiles were then dominant except for the shortest range (as in close -range air -to -air air -to -air -to -air adaptation in close -range air to air to air in very modern systems using rotating automatic balls, it is usually combined with rotating balls). The critical issue is to hit a target that moves in three -dimensional space; An attack should not only match these three coordinates, but also should do so when the target is in that position. This means that considering the speed and direction of both the target and the bullets, the bullets should either be directed to hit the target or to be directed to the predicted position of the target as soon as the bullet reaches.During the 20th century, the air defense was one of the fastest developing areas of military technology by responding to the development of aircraft, and especially radar, guided missiles and information processing (such as electromechanical analog calculation from the 1930s). The equipment described below). Air defense evolution included sensors and technical fever control, weapons and command and control areas. At the beginning of the 20th century, they were either very primitive or not.Initially, the sensors were optical and acoustic devices developed during World War I, and continued until the 1930s, but rapidly took its place radar, which was supported by Optronic in the 1980s. Until the end of the 1930s, the command and control remained primitive until the time when British's AA commander's AA commander formed a black -based air defense for ADGB, but the air defense on the field was based on less complex arrangements. NATO then called these arrangements a "air defense land environment", defined as the "Air Radar Sites and Command and Control Centers Network" in a particular operation theater used for tactical control of air defense operations.
The rules of engagement are critical to prevent air defenses from entering friendly or impartial aerial vehicles. Their usage is supported, but the IFF (friend or enemy definition) is not actually managed by electronic devices introduced during the Second World War. While these rules are caused by the highest authority, different rules may apply to different types of air defense covering the same area at the same time. AAAD usually works under the most strict rules.