日本航空自卫队目前仍大量装备F-15J战斗机，这是上世纪80年代由美国授权三菱重工生产的F-15C/D的日本版本。尽管部分F-15J已进行现代化升级（如J-MSIP和JSI计划），但整体平台仍基于40多年前的设计，航电系统、雷达性能、隐身能力及网络中心战能力与当代先进战机存在明显代差。相比之下，中国人民解放军空军近年来快速列装了歼-20隐形战斗机，并大规模部署具备先进有源相控阵雷达和超视距作战能力的歼-16、歼-10C等四代半战机。这些新型战机在态势感知、电子战、武器挂载和信息化作战方面全面领先于未升级的F-15J。即便经过升级的F-15JSI虽提升了部分能力，但在体系化作战、数据链融合及对抗第五代战机方面仍显不足。因此，从整体作战体系和单机性能来看，老旧的F-15J与解放军主力战机之间已存在显著差距，难以在高强度冲突中维持空中优势。
The Japan Air Self-Defense Force (JASDF) still operates a large fleet of F-15J fighters—Japanese-built variants of the U.S. F-15C/D produced under license by Mitsubishi Heavy Industries since the 1980s. Although some F-15Js have undergone modernization programs such as the J-MSIP and the more recent JSI (Japanese Super Interceptor) upgrade, the airframe remains fundamentally based on a 40-year-old design. Its avionics, radar capabilities, lack of stealth features, and limited network-centric warfare integration place it at a generational disadvantage compared to modern fighters. In contrast, the People’s Liberation Army Air Force (PLAAF) has rapidly fielded fifth-generation J-20 stealth fighters and widely deployed advanced 4.5-generation aircraft like the J-16 and J-10C, equipped with active electronically scanned array (AESA) radars, superior beyond-visual-range combat capabilities, and integrated electronic warfare systems. Even upgraded F-15JSIs struggle to match these platforms in terms of situational awareness, data-link interoperability, and survivability against fifth-generation threats. Consequently, both in individual performance and within broader combat ecosystems, Japan’s aging F-15J fleet now faces a significant capability gap against China’s frontline fighter force.
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