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[[Category:PvP]] | [[Category:PvP]] | ||
'''Electronic Counter Measures''', also known as '''ECM''' or "jamming". ECM gives a chance to cause the targeted ship to lose all targets it has locked, and loses the ability to target anything new for 20 seconds. During combat this means the affected ship cannot shoot or use any targeted modules on you or any of your fleet mates. This almost completely eliminates their ability to take part in the fight. Your target will still be able to use modules which don't require a target such as [[Smart Bomb| | '''Electronic Counter Measures''', also known as '''ECM''' or "jamming". ECM gives a chance to cause the targeted ship to lose all targets it has locked, and loses the ability to target anything new for 20 seconds. During combat this means the affected ship cannot shoot or use any targeted modules on you or any of your fleet mates. This almost completely eliminates their ability to take part in the fight. Your target will still be able to use modules which don't require a target such as [[Smart Bomb|smartbombs]] or other area effect weapons; however, because those untargeted modules have niche use, ECM is generally regarded as the most effective Electronic Warfare technique. | ||
== ECM Mechanics == | == ECM Mechanics == | ||
Every ship in the game has a base sensor strength and this sensor is always of a certain type ( | Every ship in the game has a base sensor strength and this sensor is always of a certain type (gravimetric, ladar, radar, magenetometric). | ||
The jam strength of your ECM is compared to the sensor strength of your target and the jamming is applied based on probapility. | The jam strength of your ECM is compared to the sensor strength of your target and the jamming is applied based on probapility. | ||
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[[Image:Ecm chance.png]] | [[Image:Ecm chance.png]] | ||
And if you use multiple jammers: | And if you use multiple jammers of same strength: | ||
[[Image:Ecm chance multi.png]] | [[Image:Ecm chance multi.png]] | ||
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|- | |- | ||
| [[Image:Punisher.jpg|150px|center]] | | [[Image:Punisher.jpg|150px|center]] | ||
| [[Image:Icon ecm radar.png|64px|center]] Amarr: Radar | | [[Image:Icon ecm radar.png|64px|center]] Amarr: Radar jammer | ||
|- | |- | ||
| [[Image:Merlin.jpg|150px|center]] | | [[Image:Merlin.jpg|150px|center]] | ||
| [[Image:Icon ecm gravimetric.png|64px|center]] Caldari: Gravimetric | | [[Image:Icon ecm gravimetric.png|64px|center]] Caldari: Gravimetric jammer | ||
|- | |- | ||
| [[Image:Incursus.jpg|150px|center]] | | [[Image:Incursus.jpg|150px|center]] | ||
| [[Image:Icon ecm magnetometric.png|64px|center]] Gallente: Magnetometric | | [[Image:Icon ecm magnetometric.png|64px|center]] Gallente: Magnetometric jammer | ||
|- | |- | ||
| [[Image:Rifter.jpg|150px|center]] | | [[Image:Rifter.jpg|150px|center]] | ||
| [[Image:Icon ecm ladar.png|64px|center]] Minmatar: Ladar | | [[Image:Icon ecm ladar.png|64px|center]] Minmatar: Ladar jammer | ||
|} | |} | ||
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==Examples== | ==Examples== | ||
you are piloting a | you are piloting a Griffin with a set of two racia gravimetric racial jammers on your griffin each giving you 8,39 jamming strength against gravimetric and 2,80 against other sensor types. your griffin also has two radar jammers with same strength but for radar. This is quite highly skilled setup. | ||
Your FC has instructed you to jam the enemy logi, whatever they may bring. The radar jammer works best against the Amarr logi ships ( | Your FC has instructed you to jam the enemy logi, whatever they may bring. The radar jammer works best against the Amarr logi ships (Augoror/Guardia) while the gravimetric is best against Caldari logi ships (Osprey/Basilisk). | ||
You end up against [[ | You end up against [[Augoror]]s with 54,2 sensor strength. With single radar jammer on an augoror the chanche of sucesful jam is | ||
8,39/54,2 = 0.155... = 16% | 8,39/54,2 = 0.155... = 16% | ||
16% chance of jamming the target, 84% chance of doing nothing. Doesn't look too good. Lets put rest of the jammers to work too. | 16% chance of jamming the target, 84% chance of doing nothing. Doesn't look too good. Lets put rest of the jammers to work too. | ||
With two radar jammers on same | With two radar jammers on same Augoror the jam chance is | ||
1 - ( 1 - 8,39/54,2 )^2 = 0.285... = 29% | 1 - ( 1 - 8,39/54,2 )^2 = 0.285... = 29% | ||
29% chance to jam, 69% chance to do nothing. Better jam chancce but we can do better. | 29% chance to jam, 69% chance to do nothing. Better jam chancce but we can do better. | ||
The two gravimetric jammers are less useful against | The two gravimetric jammers are less useful against Augorors but you still decide to put them on the same Augoror. With two radar and two gravimetric jammers on the Augoror the jam chance is | ||
1 - ( 1 - 8,39/54,2 )^2 * ( 1 - 2,80/54,2 )^2 = 0.357 = 36% | 1 - ( 1 - 8,39/54,2 )^2 * ( 1 - 2,80/54,2 )^2 = 0.357 = 36% | ||
It is clear that the gravimetric jammers are not helping much against | It is clear that the gravimetric jammers are not helping much against Augorors. If there are any ships with vulnurable sensors (Caldari ships in this case) on field then it may be better to jam them even if they weren't as important jamming targets. | ||
On the other hand if you had had a crystal ball with you when you fit your ship you could have fitted full rack of four radar jammers. In that case the probability to succesfully jam one enemy | On the other hand if you had had a crystal ball with you when you fit your ship you could have fitted full rack of four radar jammers. In that case the probability to succesfully jam one enemy Augoror would have been | ||
1 - ( 1 - 8,39/54,2 )^4 = 0.489... = 49% | 1 - ( 1 - 8,39/54,2 )^4 = 0.489... = 49% | ||
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So far the examples have been about focusing all jams to single target. But the voice of your EWAR FC echoes in your mind ''"Spread the jams"'' | So far the examples have been about focusing all jams to single target. But the voice of your EWAR FC echoes in your mind ''"Spread the jams"'' | ||
If all jams are on one target you may succesfully jam the target with one jam and be happy, or you may succesfully jam the same target with two jammers and wonder if things could be better. | If all jams are on one target you may succesfully jam the target with one jam and be happy, or you may succesfully jam the same target with two jammers and wonder if things could be better. If you spread the jams to one jam per target the probability to jam ''at least'' one target does not change '''but''' there is the chance to jam multiple targets. | ||
Spreading four radar jamers to four different | Spreading four radar jamers to four different Augorors gives you still the same 49% chance to jam at least one of them But you will also have the chance to jam two, three or four target. | ||
{| class="wikitable" border=0 | {| class="wikitable" border=0 | ||