As a critical component of platform defense,chaff clouds play a vital role.However,their inherent complexity and randomness pose significant challenges for real-time simulation of scat-tering characteristics using conventional methods.Based on the Vector Radiative Transfer(VRT)the-ory,the Discrete Ordinates Method(DOM)is introduced to efficiently solve the governing equation,and a fast simulation method for chaff jamming is proposed.The approach establishes a comprehensive parameter description system and simulation mapping framework for chaff cartridge-chaff cloud jam-ming patterns,enabling full lifecycle simulation of the chaff countermeasure process.Laboratory and field experiments validate the method's effectiveness,demonstrating simulation errors within 5 dB while maintaining real-time performance,thereby confirming its feasibility and reliability.