| The transmission of information plays an increasingly important role in peoplework，life. Communication countermeasure equipment is developed to be more intuitivein order to help students to understand the communication signal modulation anddemodulation and transmission performance, meanwhile participated the experiment inthe professional course of the principles of communication countermeasure can providegreat convenience for teaching.Firstly, depending on the experimental requirements, we completed the overalldesign of the communication countermeasure equipment, as well as the detailed designof launch board and receiver board in the experimental system. And then the displaycontrol software and the control process of computer were designed. A variety ofmodulated signals were simulated in matlab. Combined with the Software DefinedRadio, a variety of modulation of modulation of communication signals (2PSK,2DPSK,QPSK, QDPSK, FSK, ASK, MSK and direct spread spectrum signal) were achieved onthe hardware platform. Besides, four interference signals were implemented andanalyzed (noise, partial-band interference, comb interference and related tointerference).Finally, the experimental procedure and experimental methods were designed. Andthe experimental results were analyzed in detail. |
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