根据小波分析理论，针对无源北斗导航定位系统初始校频问题，提出了一种基于小波分析的信号特征提取算法。
According to wavelet analysis theory, a signal picking up algorithm based on wavelet analysis is proposed to solve problem of passive CNS initial frequency calibration.
长久以来存在的用小讯号理论对电压源逆变器传动系统动态不稳定性进行预测中的理论与实践某些偏差问题在这里得到了解决。
Discrepancies which have long existed between theory and practice concerning the prediction of dynamic instability of a VSI drive by the small signal theory are resolved.
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