A.A. Moiseev – Ph.D.(Eng.), Senior Research Scientist,

Tehnos-RM (Mytischi, Moscow region)

E-mail: slow.coach@yandex.ru

Differential range finding is one of the localization methods which used along with amplitude location and triangulation. It’s used for

surface coordinates determination and based on measurements of repeaters signals delays relative to direct one. These delays are

recalculated then into polar or Cartesian coordinates of object. Repeater signals received in strobes initiated at direct signal receiving

to avoid false location and to decrease its probability. Graphical location method at differential location based on use of hyperbolas

systems associating with central locator and repeaters positions. They formed hyperbolical coordinate net whose nodes correspond to

repeaters signal delays and can be used for their recalculation into coordinates. Calculation algorithm based on the same approach

which supplemented with cosine theorem use. This algorithm was implemented in Excel and Lab View that allows demonstrating developed

method applicability. Performed consideration shows that coordinates calculation on the base of differential rangefinding can

be implemented without numerical methods application. In such conditions location algorithm can be simplified and implemented onthe-

fly. Location precision is determined at this with measurements precision and proposed to be investigated henceforth.

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