The frequency hop code pulse signal is a new form of pulse compression radar signal, and is of great analysis value.

跳频编码脉冲信号是一种新的脉冲压缩雷达信号形式，极具研究价值。

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For the phase code pulse compression radar, the article gives emphasis to introduce its working principle and realizing method.

对于相位编码脉冲压缩雷达方案，重点介绍了其工作原理和实现方法。

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The design method for hybrid waveforms utilizing ran-dom poly-cell code pulse position modulation (PPM) and pulse-to-pulse binary sequences phase modulation (PM) is introduced in this paper.

该文提出了一种利用随机多元码脉位调制(PPM)和脉间伪随机或随机二元序列相位调制(PM)相结合的混合波形设计方法。

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Pulse-code modulation is simply a way of representing the analog electrical signal, in digital form.

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While it's always hard to pin down the exact origins of an idea -- especially one like pulse-code modulation, where a number of parties were involved -- sifting out the large and significant contributions from the gold pan of history tends to bring up the same names time and again.

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Shannon would also contribute to the further development of pulse-code modulation (along with Bell alumni Bernard M Oliver and John R Pierce) at around the same time, using technology that eliminated some of the issues (such as complex circuitry) from the earlier, but conceptually similar, implementation from Briton Alec Reeves in 1938.

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