它所发送的信号是由一组正交的正弦信号作为副载波，用码元周期为T的不归零方波作为基带码型调制而成的。
The transmitted signals which were modulated is a group of orthogonal sine signals as subcarrier and non-regular zero square waves that the code elements period is t as baseband coded formats.
提出了应用于三相电压型脉宽调制整流器的空间矢量简化算法。
A simplified algorithm three-phase voltage source PWM rectifier for space vector modulation was presented.
根据传统光学干涉原理研制出的相位调制型光纤传感器，其突出优点是灵敏度高。
The optic fiber sensors of phase modulation type developed by the interference theory in traditional optics are high sensitive.
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