The optimizing selection of radar network under jamming of multiple range false targets was studied. Firstly, a Mahalanobis distance model of false-target measurement point was built up. On which basis, analysis was made to the influence of non-central parameter to false discriminating probability of false targets. Then the relationships between non-central parameter and the relative location of radar network and target, deception distance, and radar measure error were discussed separately. Therefore, their influences to radar network false-discriminating probability of false targets were obtained. Simulation results verify the correctness of the analysis, which is of theoretical value to deployment optimization of radar network.