Because of the uncertainty of the measurement data of sensors

association accuracy rate of the traditional association method is not high.The possibility theory is introduced to express the uncertainty of measurement data

and reflect the compatibility degree between measuremental value and true value.An association model based on the possibility distribution is developed

then statistics distance of each feature component on measurements and targets is fuzzified.Expresses the fuzzy relation between measurements and targets quantitatively through possibility distribution

then association problem is converted to a multi-target decision issue.The simulation experiment verifies the effectiveness of the proposed method.