MARK XIIA IFF系统及其信号消息格式

Mark XIIA是美军和北约盟军统一研制的新型敌我识别系统，其中Mode 5 IFF是Mar k XIIA的最重要部分。首先，分析了Mark XIIA Mode 5的性能特点，表明Mode 5不仅能完成 基 本的敌我识别功能，同时具有态势感知、选址询问、数据传输等功能；其次，对Mark XIIA 系 统的工作原理进行了分析，给出了系统工作原理框图；最后，叙述了Mark XIIA Mode 5的信 号消息格式及处理流程，分析了其抗干扰性能。

Mark XIIA IFF System and its Signal Message formats

Mark XIIA is a new type IFF(Identification Foe or Friend) system developed by US and NATO armies, and Mode 5 IFF is the most important part of the system. Firstly, t he functions of the system is analysed.It is shown that Mode 5 has not only the ability of IFF, but also the ability of Battlefield Situation Awareness(BSA), address se lecting inquiry and data transmission. Secondly, the operating principle and block diagram of the system are given. Finally, the signal formats are provided and the anti ja mming ability of Mark XIIA M ode 5 is analysed.