本文提出了一种对符合欧洲标准的查询应答器系统中上行链路2FSK 信号进行接收和 解调处理的方法,通过MATLAB 仿真重点分析了使用差分检波法进行解调的原理和过程。 关键词:欧洲标准查询应答器;上行链路信号;FSK;差分检波;MATLAB Abstract: The paper introduces a method to receive and demodulate uplink 2FSK signal in a BALISE system in accordance with EUROBALISE standard, and analyses the demodulation process using difference detection method in detail by MATLAB simulation. KEYWORDS: EUROBALISE;uplink-signal;FSK;difference detection;MATLAB