The connotation of IFF is discussed from the macro angle,the ECM capability of IFF in the modern warfare is analyzed,the technology principle and development of IFF are shown in this paper.

• 从宏观的角度论述了敌我识别系统的内涵,分析了敌我识别系统在现代战争中的电子对抗能力,阐述了其技术原理,并对其发展趋势进行了描述。