field-interval noise lines 场期间噪声行
interval noise factor 区间型干扰因素
fixed-interval white noise wiener smoother 固定区间白噪声wiener平滑器
fixed-interval white noise smoother 固定区间白噪声平滑器
fixed-interval white noise smoothers 固定区间白噪声平滑器
The white noise scanning test was conducted before the shaking table test and repeated at every interval of each test to obtain the law of the basic frequency vary with the time.
在模拟地震试验前和各阶段模拟地震试验后均对模型进行了白噪声扫描试验，考察了模型的频率变化规律。
DDS Chip AD9850 has precise output frequency, small frequency interval, and high signal to noise ratio.
DDS芯片AD 9850具有输出频率精确、频率间隔小、易于调谐、信噪比高等优点。
The identification accuracy is related to the order of the fitting model, sample interval and sample number, and also affected by signal noise, which shows the method should be improved.
辨识精度与算法中拟合模型阶数、采样时间间隔和采样总数有关，并受信号中噪声的影响，需加以改进。
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