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.
Info are from Wikipedia.org
(header image done by vlado32)

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Post comment Comments  (0 - 10 of 103)
Kalga
Kalga Aug 28 2014, 10:20pm says:

Some food for thought: Ausairpower.net

+1 vote     reply to comment
ShockDivision
ShockDivision Aug 1 2014, 9:23am says:

Let's CLEAR the Ear! I mean Air.

+2 votes     reply to comment
Nergal01
Nergal01 Jun 17 2014, 8:44pm says:

And then C&C Generals has prophetised our future
Gizmodo.com

+2 votes     reply to comment
ℱℓσℊℊℯɾ✈
ℱℓσℊℊℯɾ✈ Mar 29 2014, 11:35am says:

Moddb.com
Make sure to join Submarine Lovers group !

+4 votes     reply to comment
Nergal01
Nergal01 Mar 5 2014, 11:38pm says:

Theaviationist.com

Now that's what you call it 'weapon malfunction'.

+3 votes     reply to comment
ℱℓσℊℊℯɾ✈
ℱℓσℊℊℯɾ✈ Mar 5 2014, 5:57am says:

Changed Group name to Air Defence Lovers Group.

+3 votes     reply to comment
Kalga
Kalga Mar 10 2014, 9:28pm replied:

Which means that now the group is filed above the aircraft lovers group...

... there goes that visual pun. :S

+3 votes     reply to comment
ℱℓσℊℊℯɾ✈
ℱℓσℊℊℯɾ✈ Dec 31 2013, 5:59pm says:

Happy new year Anti Aircraft Lovers !

+7 votes     reply to comment
ℱℓσℊℊℯɾ✈
ℱℓσℊℊℯɾ✈ Sep 8 2013, 5:52am says:

Hey guys I made a group which is dedicated to Total war series fans Join it !
Moddb.com

+5 votes     reply to comment
Kornet555
Kornet555 Mar 25 2013, 2:36pm says:

For info about NVA AA watch this documentary:
Youtube.com

+4 votes     reply to comment
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