The new algorithms can overcome efficiently the shortcomings of low resolution and high variance which are existing in both FFT and Cross-periodogram methods.
该方法可以有效地克服传统的互谱FFT算法和互周期图法存在的谱分辩率低，谱估计方差大等缺点。
参考来源 - 期刊学术社区Previously time series method, periodogram, neural network method, the grey system theory and other methods of prediction of ship are applied.
以往曾有时间序列法、周期图法、神经网络法、灰色系统理论等方法进行舰船的预报。
参考来源 - 基于组合预测方法的舰船纵摇运动预报·2,447,543篇论文数据，部分数据来源于NoteExpress
用平均平滑周期图法分别估算出信号与噪声的功率谱密度函数。
The power spectrum of the noise and signal are estimated by the average smooth periodogram method.
RUP 生命周期图沿着能充分表现小项目所需的工作的微观迭代维度描述 RUP。
The RUP Lifecycle Diagram depicts RUP along a micro-iterative dimension that adequately represents the effort required for small projects.
得到渐近无编、弱一致估计的苦干充分条件，它明显优于常用的周期图加窗估计法。
Under these conditions, the new method is obviously better than the cycle chart plus window estimate method in common use.
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