Effectiveness analysis of multi-source decoying system against ARM

Based on the theory of active decoying system against anti-rediation missile(ARM), decoy error formula was derived. Three typical distributions, which were the first three-source distribution, the second three-source distribution and four-source distribution were discussed as examples, and the error formulae of them were simplified, and decoy error curves were obtained with numerical calculation, then the influence of radiation source power rate on decoy error under different distributions was analyzed. Besides, the real attack process of ARM was also analyzed, and ARM's mobile correction was inducted. Then diagrams of ARM's point of impact and radar's protect probability curves were obtained with simulation analysis. Decoy effect of different distributions was compared with each other, and the results show that four-source distribution is the best plan. These conclusions have great significance in researching the operational effectiveness of multi-source decoying system against ARM.