To cope with the problem that the acquisition probability of jamming signals in the TACAN receiver is too low, a new jamming model based on the denial environment is proposed in this paper. Firstly, the influence of noise on the computed results is studied. Secondly, the deception jamming power changed along with distance between the airborne and the jammer is analyzed. Then, the relative acquisition probability of the deception signals changed along with the JSR (jam to signal ratio) is analyzed. Finally, the effectiveness of the jamming model is proved by simulation.