# How target locking woks? [closed]

In many aerial war face movies they show that aircraft is locked by missile ,particularly in movie behind enemy line " F/A-18 Hornet" is locked by 2 SAM missile,pliot try to break the lock but aircraft get shot down.
i dont understand this concept ,how this locking work and how pilot break the lock?

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## closed as off topic by dmckee♦Dec 14 '12 at 16:09

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This is an engineering--rather than physics--question. The underling sensors may be sufficiently physics focused to be on-topic, but "lock on" is an idea that lives at the system level and has no basis in physics. –  dmckee Dec 14 '12 at 16:11

The secret that EM waves are most widely used in tracking down targets because those have the speed $c$ which necessarily means that they could cover 300 meters in just a microsecond ($\mu s$)...