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Keywords: maximum likelihood estimation; position information field; location; multi-target Abstract. In the passive location system, the traditional maximum likelihood estimation (MLE) location method can't eliminate larger error or wrong parameter automatically, and does not apply to multi-target situation. A novel location method named as position information field for target (PIFT) location method is proposed for multi-target based on the MLE location method. By adding a cost function, the PIFT location method can overcome the disadvantage of MLE location method mentioned above and adapt to the complex electromagnetic environment. It is suitable for the multi-target localization and determines target's number and position simultaneously even the measured parameters of multi-target are indistinguishable. The effectiveness and adaptive of the proposed method is verified by computer experiments.

A Novel Location Method for Multi-Target Based on the Maximum Likelihood Estimation