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提出了一种CTCS点式应答器系统中BTM接收模块的设计,通过对BTM接收模块各项功能的分析,设计出相对应的模块。整个BTM接收模块完成对地面应答器信号的接收、处理、解调、存储和转发。与之对应,设计了解调前端处理模块、FSK解调模块、数字处理与存储模块和RS232RS422接口模块来完成相应功能。通过实际电路设计实现并经过实际测试,本设计能够很好的满足BTM接收模块的各项功能和预定指标,并且能够很好的跟其他模块配合使用,具有很好的稳定性。
A design of BTM receiver module in CTCS point transponder system is proposed. By analyzing each function of BTM receiver module, a corresponding module is designed. The entire BTM receiver module completes the reception, processing, demodulation, storage and forwarding of terrestrial transponder signals. Correspondingly, the demodulation front-end processing module, FSK demodulation module, digital processing and storage module and RS232 RS422 interface module are designed to accomplish the corresponding functions. Through the actual circuit design and practical testing, the design can well meet the BTM receiver module features and predetermined indicators, and can be used well with other modules, with good stability.