基于等长字符周期的Morse码自动发报逻辑电路设计
首发时间:2019-12-06
摘要:在通信领域,Morse电报是复杂恶劣环境下有效通信的手段之一。但信号在通信过程中易受强噪声干扰,且手动发报方式使得情报信息正确性和信号稳定性在一定程度上受报务员业务能力的制约。本文以国际Morse码中常用字符为例,设计了由ASCII码到Morse码的代码转换逻辑,以码周期为基准(工作的码周期和休眠的码周期),使不等长编码的常用字符具有等长字符周期,为自动发报提供了统一时标,使自动发报过程能以键盘输入为手段,符合人的信息录入习惯,降低了录入者对Morse编码掌握程度的依赖。通过功能仿真,验证了所设计译码逻辑的正确性。
关键词: 计算机应用; Morse码; 自动发报
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Design of Morse Auto-transmitting Logic Based on Isometric Character Cycle
Abstract:In the field of communications, Morse telegraphy is one of the effective means of communication in complex and hostile environments. However, the signal is susceptible to strong noise interference in the communication process, and the accuracy of intelligence information and signal stability are restricted by the operator's service ability to some extent. Taking the commonly used characters of International Morse Code as examples, the transmitting logic for ASCII-Morse code transmitting has been designed. The transmitting logic provides synchronized timing mark for auto-transmitting of commonly used characters with different number of codes based on isometric character cycle which includes same number of code cycle (both operative and dormant). It makes auto-transmitting process could begin from typing keyboard, which conforms to human input habit more. It reduces the reliance on the typist's level of Morse code. The functional simulation verifies the design is correct.
Keywords: Computer applications Morse code Auto-transmitting
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