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@ExperiBass
Created January 11, 2021 17:35
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The missiwe knyows whewe it is at aww times. It knyows this because it knyows whewe it isn't. By subtwacting whewe it is fwom whewe it isn't, ow whewe it isn't fwom whewe it is (whichevew is gweatew), it obtains a diffewence, ow deviation. The guidance subsystem uses deviations to genyewate cowwective commands to dwive the missiwe fwom a position whewe it is to a position whewe it isn't, and awwiving at a position whewe it wasn't, it nyow is. Consequentwy, the position whewe it is, is nyow the position that it wasn't, and it fowwows that the position that it was, is nyow the position that it isn't.
In the event that the position that it is in is nyot the position that it wasn't, the system has acquiwed a vawiation, the vawiation being the diffewence between whewe the missiwe is, and whewe it wasn't. If vawiation is considewed to be a signyificant factow, it too may be cowwected by the GEA. Howevew, the missiwe must awso knyow whewe it was.
The missiwe guidance computew scenyawio wowks as fowwows. Because a vawiation has modified some of the infowmation the missiwe has obtainyed, it is nyot suwe just whewe it is. Howevew, it is suwe whewe it isn't, within weason, and it knyows whewe it was. It nyow subtwacts whewe it shouwd be fwom whewe it wasn't, ow vice-vewsa, and by diffewentiating this fwom the awgebwaic sum of whewe it shouwdn't be, and whewe it was, it is abwe to obtain the deviation and its vawiation, which is cawwed ewwow.
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