Difference between revisions of "Signature radius"

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The signature radius of your ship represents how large your ship is and, therefore, how difficult it is to hit with a weapon and to lock on to. You can find the signature radius of your ship under Show Info > Attributes > Targeting. Basically, a smaller signature radius makes you more difficult to hit and lock on to.  
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{{Update|Signature radiuses in table need to be checked.}}
  
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= Targeting Time =
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The '''signature radius''' is, for all intents and purposes, how "big" a ship appears on sensors. While the signature radius does not describe how big the ship appears visually, most other aspects are governed by the signature size of the ship.
  
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To determine how quickly a ship with a scanning resolution of X can lock a ship of signature radius Y, use the formula
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== General information ==
  
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    targeting time = 40000/(X arcsinh(Y)^2)  
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A ship's signature is generally related to its size (a frigate is smaller and has a smaller signature radius than a battleship), and while all ships of a certain size tend to have similar signature radii, there are three ship classes with notably smaller signature radii than their peers:
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* [[Cruiser#Logistics|Logistics cruisers]] (Tech 2)
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* [[Battlecruiser#T1 Battlecruisers|Attack battlecruisers]] (also called "tier 3 battlecruisers")
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* [[Blockade Runner]]s (Tech 2)
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There are also two classes of ships with notably larger signature radii than similar ships:
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* [[Frigate#Covert Ops Frigate|Covert Ops frigates]] (Tech 2)
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* [[Cruiser#Recon Ships|Recon cruisers]] (Tech 2)
  
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Some sources say that the number should be 10000, not 40000, but you can easily undock in a frigate and check that 40000 is indeed the correct number. The "arcsinh" function in the inverse of hyperbolic sine. If you wish to put this formula into a spreadsheet program, it might be the function "asinh" instead.
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As a rough guide:
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{{#CSS:
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= Turret and Missile Damage =
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.radius td:last-child
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{
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A smaller signature radius reduces incoming damage. From turrets, the damage is reduced because they have a smaller chance of hitting you. If you show info on any turret, you will notice a signature resolution. This number will be 40 for small turrets, 125 for medium turrets, and 400 for large turrets. When a turret shoots you, the ratio of your signature radius and the turret's signature resolution is factored in to the chance to hit. See [[Turret Damage]] for the exact numbers. Similarly, when a missile strikes you, the missile's explosion radius is compared to your signature radius to determine the damage dealt.
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  text-align: right;
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}
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}}
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= Skills and Modules =
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{| class="wikitable radius"
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|- style="background-color: #222222;"
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There are no skills that alter the signature radius of your ship. However, there are several modules that will increase either your or your opponent's signature radius:
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! Ship class
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! style="cursor: help;" | <span title="Signature radius">Sig. radius</span>
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*Microwarpdrives: These propulsion modules increase your signature radius by 500% while active (less for faction modules) in exchange for a 500% increase in speed. Note that while you have this active, all turret-based ships have a much greater chance to hit you. This can be offset by your increased speed, as long as you do not fly directly at the target. Against missiles, the increase in signature radius has no real effect on incoming damage, as the increase in velocity counters it.
 
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*Target Painters: These EWAR modules increase the target's signature radius by 25-30%. This increase in signature radius can greatly boost damage if the target is smaller than the missile/turret type used against it, or if it's moving too quickly for the explosion radius of the missile/tracking of the turret. If your turrets hit often or the missile's explosion velocity is much larger than the target's velocity, target painters will have very little effect.
 
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*Shield Extenders: The small, medium, large, and x-large shield extenders add a flat 1, 2, 7, and 25 m to the ship's signature radius, respectively.
 
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*Shield Rigs: Each increases the ship's signature radius by 10%. Note this penalty can be reduced to 5% with the shield rigging skill.
 
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*Inertial Stabilizers: These increase your signature radius by 10-11%.
 
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<br>
 
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Halo implants, Skirmish Warfare Link - Evasive Maneuvers, and X-Instinct Boosters can all reduce the signature radius of your ship.
 
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<br>
 
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= Signature Radii of Ships, by Hull Type =
 
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{| border="1" cellpadding="2" style="text-align:left;"
 
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! Ship Type
 
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! Signature Radius (m)
 
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|-
 
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| Pod
 
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| 25
 
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|-
 
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| '''<br>'''
 
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|
 
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|-
 
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| Interceptors
 
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| 30-36
 
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|-
 
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| Frigates
 
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| 30-50
 
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|-
 
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| Assault Ships
 
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| 33-39
 
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|-
 
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| Covert Ops
 
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| 35-50
 
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|-
 
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| Electronic Attack Frigates
 
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| 51-58
 
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|-
 
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| '''<br>'''
 
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|
 
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|-
 
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| Destroyers
 
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| 75-90
 
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|-
 
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| Interdictors
 
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| 75-90
 
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|-
 
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| '''<br>'''
 
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|
 
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|-
 
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| Cruisers
 
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| 100-150
 
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|-
 
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| Heavy Assault Ships
 
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| 115-160
 
 
|-
 
|-
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| Recon Ships
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|Capsule
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| 127-180
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|25m
 
|-
 
|-
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| Heavy Interdictors
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|Shuttle
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| 130-160
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|25m
 
|-
 
|-
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| Strategic Cruisers
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|Frigate
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| 150
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|38m
 
|-
 
|-
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| '''<br>'''
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|Destroyer
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|  
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|65m
 
|-
 
|-
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| Battlecruisers
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|Cruiser
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| 240-300
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|120m
 
|-
 
|-
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| Command Ships
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|Industrial
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| 240-300
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|195m
 
|-
 
|-
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| '''<br>'''
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|Mining Barge
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|  
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|200m
 
|-
 
|-
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| Black Ops
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|Battlecruiser
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| 288-432
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|270m
 
|-
 
|-
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| Marauders
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|Battleship
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| 425-500
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|400m
 
|-
 
|-
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| Battleships
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|Jump Freighter
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| 320-500
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|9,840m
 
|-
 
|-
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| '''<br>'''
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|Carrier
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|  
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|9,960m
 
|-
 
|-
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| Dreadnoughts
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|Freighter
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| 2860-3100
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|10,515m
 
|-
 
|-
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| Carriers
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|Dreadnought
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| 2865-3065
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|11,200m
 
|-
 
|-
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| Supercarriers
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|Supercarrier
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| 11640-12470
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|18,940m
 
|-
 
|-
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| Titans
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|Titan
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| 15430-16590
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|23,397m
 
|}
 
|}
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Signature radius affects many things, notably:
 +
* How quickly a ship can be targeted.
 +
* How much damage the ship takes from most weapons.
 +
* How easily a ship can be detected with combat probes.
 +
 +
== Targeting time ==
 +
{{main|Targeting}}
 +
The larger a ship's signature radius, the faster other ships can lock on. Locking speed also depends on the [[scan resolution]] of the targeting ship (the higher the scan resolution, the faster you can lock on). Generally speaking, small ships have small signature radii and high scan resolutions, whereas large ships have large signature radii and low scan resolutions. For details on how to improve your scan resolution (or reduce your enemy's), see [[targeting]].
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 +
== Signature radius and weapon damage ==
 +
A smaller signature radius can help to reduce incoming damage from turrets, missiles and bombs (the only weapon system that is not affected by signature radius is the [[smartbomb]]s). You can find more information about this effect and the equations in the dedicated articles about [[Turret Damage]], [[Missile Damage]] and [[Bombs]].
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== Modifying signature radius ==
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 +
=== Modules and Rigs ===
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There are no skills that alter the signature radius of your ship. However, there are several modules that will increase either your or your opponent's signature radius, and one module that can decrease your signature radius:
 +
 +
* '''[[Fitting Modules and Rigs Guide#Microwarpdrives|Microwarpdrives]]''' (MWDs): These propulsion modules increase your signature radius by 500% while active (less for faction modules) in exchange for a 500% increase in speed. This means that while the MWD is active, all turret-based ships have a much greater chance to hit you. This can be offset by your increased speed, as long as you do not fly directly at the attacker. Against missiles, the increase in signature radius has no real effect on incoming damage, as the increase in velocity counters it.
 +
* '''[[Electronic warfare#Target Painting|Target Painters]]''': These EWAR modules increase the target's signature radius by 25-30%. This increase in signature radius can greatly boost damage if the target is smaller than the missile/turret type used against it, or if it's moving too quickly for the explosion radius of the missile/tracking of the turret. If your turrets hit often or the missile's explosion velocity is much larger than the target's velocity, target painters will have very little effect.
 +
* '''[[Fitting Modules and Rigs Guide#Shield Extenders|Shield Extenders]]''': The small, medium, large, and x-large shield extenders add a flat 1, 2, 7, and 25 m to the ship's signature radius, respectively.
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* '''[[Fitting Modules and Rigs Guide#Shield|Shield Rigs]]''': Each increases the ship's signature radius by 10%. Note this penalty can be reduced (down to 5%) with the {{sk|Shield Rigging}} skill.
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* '''[[Fitting Modules and Rigs Guide#Inertial Stabilizers|Inertial Stabilizer modules]]''': These increase your signature radius by 10-11%.
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=== Signature Radius Suppressor ===
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[[File:Icon target spectrum breaker.png|left]]The '''Signature Radius Suppressor''' is an electronic support module found in pirate [[Relic and data sites|data sites]]. This module can only be fitted in battleship-class vessels (including [[Marauders]] and [[Black Ops]]). Notably, it is the only module that can ''reduce'' a ship's Signature Radius.
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Functionality:
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* The module passively reduces your signature radius by 10%.
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* The module can be activated at a 660 GJ cost to reduce your signature radius by 70% for 12 seconds. Duration of the activation period can be improved by the skill {{sk|Signature Masking}}.
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* The module has a reactivation delay of 150s after use.
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 +
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=== Drugs and Implants ===
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[[Implants#Advanced Attribute Enhancer Reference|Halo implants]], [[Warfare links#Skirmish Warfare Links|Skirmish Warfare Link - Evasive Maneuvers]], and X-Instinct [[Medical boosters|Boosters]] can all reduce the signature radius of your ship.
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[[Category:Game mechanics]]

Latest revision as of 10:23, 12 February 2024

This page should be updated due to game changes.
Reason: Signature radiuses in table need to be checked.

The signature radius is, for all intents and purposes, how "big" a ship appears on sensors. While the signature radius does not describe how big the ship appears visually, most other aspects are governed by the signature size of the ship.

General information

A ship's signature is generally related to its size (a frigate is smaller and has a smaller signature radius than a battleship), and while all ships of a certain size tend to have similar signature radii, there are three ship classes with notably smaller signature radii than their peers:

There are also two classes of ships with notably larger signature radii than similar ships:

As a rough guide:

Ship class Sig. radius
Capsule 25m
Shuttle 25m
Frigate 38m
Destroyer 65m
Cruiser 120m
Industrial 195m
Mining Barge 200m
Battlecruiser 270m
Battleship 400m
Jump Freighter 9,840m
Carrier 9,960m
Freighter 10,515m
Dreadnought 11,200m
Supercarrier 18,940m
Titan 23,397m

Signature radius affects many things, notably:

  • How quickly a ship can be targeted.
  • How much damage the ship takes from most weapons.
  • How easily a ship can be detected with combat probes.

Targeting time

Main article: Targeting

The larger a ship's signature radius, the faster other ships can lock on. Locking speed also depends on the scan resolution of the targeting ship (the higher the scan resolution, the faster you can lock on). Generally speaking, small ships have small signature radii and high scan resolutions, whereas large ships have large signature radii and low scan resolutions. For details on how to improve your scan resolution (or reduce your enemy's), see targeting.

Signature radius and weapon damage

A smaller signature radius can help to reduce incoming damage from turrets, missiles and bombs (the only weapon system that is not affected by signature radius is the smartbombs). You can find more information about this effect and the equations in the dedicated articles about Turret Damage, Missile Damage and Bombs.

Modifying signature radius

Modules and Rigs

There are no skills that alter the signature radius of your ship. However, there are several modules that will increase either your or your opponent's signature radius, and one module that can decrease your signature radius:

  • Microwarpdrives (MWDs): These propulsion modules increase your signature radius by 500% while active (less for faction modules) in exchange for a 500% increase in speed. This means that while the MWD is active, all turret-based ships have a much greater chance to hit you. This can be offset by your increased speed, as long as you do not fly directly at the attacker. Against missiles, the increase in signature radius has no real effect on incoming damage, as the increase in velocity counters it.
  • Target Painters: These EWAR modules increase the target's signature radius by 25-30%. This increase in signature radius can greatly boost damage if the target is smaller than the missile/turret type used against it, or if it's moving too quickly for the explosion radius of the missile/tracking of the turret. If your turrets hit often or the missile's explosion velocity is much larger than the target's velocity, target painters will have very little effect.
  • Shield Extenders: The small, medium, large, and x-large shield extenders add a flat 1, 2, 7, and 25 m to the ship's signature radius, respectively.
  • Shield Rigs: Each increases the ship's signature radius by 10%. Note this penalty can be reduced (down to 5%) with the Shield Rigging skill.
  • Inertial Stabilizer modules: These increase your signature radius by 10-11%.

Signature Radius Suppressor

Icon target spectrum breaker.png

The Signature Radius Suppressor is an electronic support module found in pirate data sites. This module can only be fitted in battleship-class vessels (including Marauders and Black Ops). Notably, it is the only module that can reduce a ship's Signature Radius.

Functionality:

  • The module passively reduces your signature radius by 10%.
  • The module can be activated at a 660 GJ cost to reduce your signature radius by 70% for 12 seconds. Duration of the activation period can be improved by the skill Signature Masking.
  • The module has a reactivation delay of 150s after use.


Drugs and Implants

Halo implants, Skirmish Warfare Link - Evasive Maneuvers, and X-Instinct Boosters can all reduce the signature radius of your ship.

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