问题描述：
英语翻译
For further analysis,four pairs of simulated DD system
errors with respect to the practical experimental data are
investigated (details of the experiment will be given in
next section).A standard deviation of 0.05 cycle are
added to this data and analyzed,and the trend extracted
results are given in Figure 6.Only the analysis on the
simulated PRN21-17 DD systematic errors are given here
due to space limitations.The residual series of the three
models are given in Figure 7.EMD results and wavelet
trend extraction of imf1 are shown in Figures 8 and 9
respectively.Table 1 gives the quantitative evaluation
quantities for the different models,which shows that the
EMD-Wavelet model has the highest SNR and lowest
RMSE with respect to the four pairs of simulated DD
series.
For further analysis,four pairs of simulated DD system
errors with respect to the practical experimental data are
investigated (details of the experiment will be given in
next section).A standard deviation of 0.05 cycle are
added to this data and analyzed,and the trend extracted
results are given in Figure 6.Only the analysis on the
simulated PRN21-17 DD systematic errors are given here
due to space limitations.The residual series of the three
models are given in Figure 7.EMD results and wavelet
trend extraction of imf1 are shown in Figures 8 and 9
respectively.Table 1 gives the quantitative evaluation
quantities for the different models,which shows that the
EMD-Wavelet model has the highest SNR and lowest
RMSE with respect to the four pairs of simulated DD
series.
问题解答：
我来补答展开全文阅读