At last, the hardware realization method of dynamic background signal generator based on software radio is advanced.

最后给出了基于“软件无线电”思想的动态背景信号产生器的硬件实现方案。

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Our research on this subject centers on design and realization of the dynamic background signal generator in the simulator of electromagnetism environment of communication signals.

本课题的研究是围绕通信信号电磁环境模拟器中的动态背景信号产生器的设计与实现来进行的。

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The whole system design flow is based on the SDR theory, for the further improvements of the the Dynamic Background Signal Generation System, this paper may contain some reference value.

整个系统的方案设计体现了基于“软件无线电”体系结构的设计思想，对今后复杂电磁环境中动态背景信号生成系统的设计具有一定参考价值。

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The clock face, which uses a red second hand resembling a railway signal on a monochrome background, was designed for the SBB in 1944 by engineer and designer Hans Hilfiker while the rest of Europe was focusing on other matters.

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