Air defence is defined by NATO as "all measures designed to nullify or reduce the effectiveness of hostile air action."[1] They include ground-and air-based weapon systems, associated sensor systems, command and control arrangements and passive measures (e.g. barrage balloons). It may be used to protect naval, ground, and air forces in any location. However, for most countries the main effort has tended to be 'homeland defence'. NATO refers to airborne air defence as counter-air and naval air defence as anti-aircraft warfare. Missile defence is an extension of air defence as are initiatives to adapt air defence to the task of intercepting any projectile in flight.

In some countries, such as Britain and Germany during the Second World War, the Soviet Union and NATO's Allied Command Europe, ground based air defence and air defence aircraft have been under integrated command and control. However, while overall air defence may be for homeland defence including military facilities, forces in the field, wherever they are, invariably deploy their own air defence capability if there is an air threat. A surface-based air defence capability can also be deployed offensively to deny the use of airspace to an opponent.

Until the 1950s, guns firing ballistic munitions ranging from 20 mm to 150 mm were the standard weapon; guided missiles then became dominant, except at the very shortest ranges.

The essence of air defence is to detect hostile aircraft and destroy them. The critical issue is to hit a target moving in three-dimensional space; an attack must not only match these three coordinates, but must do so at the time the target is at that position. This means that projectiles either have to be guided to hit the target, or aimed at the predicted position of the target at the time the projectile reaches it, taking into account speed and direction of both the target and the projectile.
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Post comment Comments  (80 - 90 of 105)
dragoon43 Apr 3 2010, 4:36am says:

THE SHILKA WOOOOOOOOO or the modern version the tunguska......i pose a question, which has a higher rate of fire? the tunguska or shilka?

+2 votes     reply to comment
ComeradeStalin Creator
ComeradeStalin Apr 5 2010, 9:09am replied:

Hm actually, tunguska is muuuuch newer and better in all ways.

+3 votes   reply to comment
dragoon43 Apr 7 2010, 11:56pm replied:

hmm i was wondering about that thanks

+1 vote     reply to comment
C&C_FOREVER Mar 24 2010, 9:34pm says:

i do not hate airplanes,but love AA missiles that powns aircrafts :D
there is some vids of AA missiles
sorry the last one is long and in russian...

+2 votes     reply to comment
wojciech May 7 2010, 3:42pm replied:

great videos dude

+1 vote     reply to comment
HALLOLL Mar 20 2010, 10:10am says:

no videos!

0 votes     reply to comment
Sputmint Mar 13 2010, 10:34pm says:

Aircrafts are spam-ish

+1 vote     reply to comment
raumboo-not-english Feb 20 2010, 3:58pm says:

nice pictures!
Salem alejkum

+3 votes     reply to comment
FelipeFR Feb 13 2010, 9:01pm says:

It is interesting. Many people on this group are both in Aircraft Lovers and Anti-Aircraft Lovers groups...

+2 votes     reply to comment
The_Chemical_Brother Feb 20 2010, 4:08pm replied:

they like both

What goes up must come down xP

+6 votes     reply to comment
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