二相调制 two-phase modulation
- 分别对其进行分析后推导出一类线性调频-二相编码复合调制信号的时域表达式,使其兼有这两种信号的特点。
The time domain expression for a class of LFM-BC co-modulated signal that has some features of these two signals is proposed after the two signals are analyzed. - 介绍了线性调频、二相编码和频率相位混合调制等脉冲压缩信号的旁瓣抑制方法,给出了相应的仿真,并对仿真结果进行了比较。
Introducing the sidelobe suppression of the above signals, the author also give the correspondent simulations and compare their results. - 通过与传统SVPWM的准优化调制方法相比,本系统采用的二相调制方法其开关损耗更小,进一步缓解了功率器件开关频率与开关损耗之间的矛盾问题。
The novel control scheme adopts the two-phase modulation and it makes smaller switching losses compared with the quasi-optimal modulated method of conventional SVPWM scheme.
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