Based on the characters of long rang underwater acoustic channels and MFSK modulation, a new FrequencyGroup Coding (FGC) method is proposed in this paper.
本文针对远程水下信道和MFSK调制的特点，提出了一种新的频率分组编码(FGC)方法。
2
This study develops the switching power for the public bus voltage of the pumping frequencygroup control system and carries out a large number of experiments.
本文研究并设计了适用于抽油机变频群控系统这种特殊场合的开关电源，进行了大量实验并设计出样机。
3
It is indicated from the results that effected by the high frequencygroup pulse power, higher machining quality is obtained by choosing higher main pulse frequency.