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<INTRUDER DESIGN DOCUMENT>

<[10.0] Defensive Systems>

There are three general types of defensive systems: point defense, interference, and information countermeasures.

<[10.1] Point Defense>

Point Defense weapons are relatively short-ranged but very precise weapon systems designed for the sole mission of either knocking an incoming weapon off its vector or vaporizing it entirely. A good example of this is the wet Navy's Phalanx system, a high ROF gun that uses lidar to track an incoming missile and adjust a steady stream of lead to knock the missile down.

Point Defense weapons can cause damage to enemy vessels at close range, but they are relatively weak compared to dedicated offensive systems.

<[10.2] Interference Defense>

Interference defenses involve interposing a layer of mass or energy between the incoming attack and the vessel. Examples of this include chaffcasters, which throw up a wide sheet of granulated matter in an attempt to block energy attacks; powerful electromagnetic fields that first infuse a missile with a negative charge then repel the missile with a positive field; and an ablative defense offered by armour. Ablative armour can often just be mass that needs to be vaporized before the internal critical systems of a vessel can be affected.

<[10.3] Information Countermeasures>

The most potent form of defense, following the rationale of "if they can't target/see you, they can't attack you." Information Countermeasures include Decoys, which offer a signature similar to your own vessel in a passive state; ECM, which can be used to confuse fully guided tracking systems; and ECCM used to counter ECM.

<[10.4] Defensive Systems Table>