## 4 Parameter-Identification-Based Configuration Design
### Effectiveness in Stowing Efficiency  
As claimed in Section 3, the newly proposed antenna featured with the deviation-angle panel and the configuration whose panel has the CP demonstrated in Figure 6c shall possess a higher RSE, which is one of its major advantages. Since the antenna's folded configuration determines the RSE, it can be compared to the RSE of the proposed antenna. Therefore, we compared the RSE of the proposed antenna configuration with those of the existing RRSAs to verify the claim. The structural parameters of the existing RRSAs are listed in Table 3, and the comparison results are presented in Table 4. In order to further explore the RSE performance of the proposed antenna, the RSE obtained by utilizing the third RSE-improving scheme in Ref. [45] is reported in Table 5. In this scheme, the panel pose is obtained by conducting an optimization algorithm; hence, its RSE is higher than that in Table 4 theoretically. According to Table 4, it is found that the RSE has been significantly improved. Therefore, for the best one, the Dornier FIRST or Dornier MEA, its minimum improvement rate is 39.15% and the maximum reaches 46.70%. Even for the poorest one, the improved sunflower, its minimum improvement rate is 8.93% and its maximum attains 20.37%. For Millimetron, its minimum improvement rate is 16.17% and its maximum attains 22.47%. In addition, for each antenna in Table 4, the RSE increases as the deviation parameter \(k_{\text{d}}\) increases, which is in good consistency with our expectation. In Table 5, in combination with the third pose adjustment strategy in Ref. [45], the RSE is improved further, with a minimum of 11.76% for the improved sunflower and a maximum of 52.87% for the Dornier \begin{table}
\begin{tabular}{l c c c c c c c c c c c c c} \hline \hline \multirow{2}{*}{**Antenna**} & \multicolumn{8}{c}{**Deviation Parameter \(k_{\text{d}}\)**} & \multicolumn{8}{c}{**Improvement Rate (\%)**} \\ \cline{2-13}  & **0** & **0.1** & **0.2** & **0.3** & **0.4** & **0.5** & **0.6** & **0.7** & **0.8** & **0.9** & **1.0** & \(\mathbf{\eta_{\text{min}}}\) & \(\mathbf{\eta_{\text{max}}}\) \\ \hline Dornier FIRST & 3.86 & 3.87 & 3.88 & 3.90 & 3.92 & 3.94 & 3.96 & 3.98 & 4.01 & 4.04 & 4.08 & 39.15 & 46.70 \\ Dornier MEA & 3.86 & 3.87 & 3.88 & 3.90 & 3.92 & 3.94 & 3.96 & 3.98 & 4.01 & 4.04 & 4.08 & 39.15 & 46.70 \\ RadioAstron & 4.33 & 4.34 & 4.36 & 4.37 & 4.39 & 4.41 & 4.43 & 4.46 & 4.48 & 4.51 & 4.55 & 30.45 & 36.50 \\ MilliMetron & 3.86 & 3.87 & 3.88 & 3.90 & 3.92 & 3.94 & 3.96 & 3.98 & 4.01 & 4.04 & 4.08 & 16.17 & 22.47 \\ NPSSDA & 3.86 & 3.87 & 3.89 & 3.90 & 3.92 & 3.94 & 3.97 & 4.00 & 4.03 & 4.06 & 4.09 & 22.51 & 29.54 \\ Uniaxial Model & 3.23 & 3.25 & 3.26 & 3.28 & 3.31 & 3.33 & 3.36 & 3.39 & 3.43 & 3.47 & 3.51 & 15.10 & 24.47 \\ CFRP Model & 4.81 & 4.82 & 4.83 & 4.84 & 4.86 & 4.87 & 4.89 & 4.91 & 4.94 & 4.96 & 4.99 & 28.11 & 32.78 \\ Sunflower & 2.92 & 2.93 & 2.95 & 2.98 & 3.00 & 3.03 & 3.06 & 3.10 & 3.14 & 3.18 & 3.23 & 28.10 & 40.86 \\ Improved Sunflower & 2.92 & 2.94 & 2.96 & 2.99 & 3.02 & 3.05 & 3.08 & 3.12 & 3.16 & 3.20 & 3.25 & 8.93 & 20.37 \\ \hline \hline \end{tabular} (1) Parameters \(\mathbf{\eta_{\text{min}}}\) and \(\mathbf{\eta_{\text{max}}}\) are the minimum and maximum improvement rate relative to the original RSE in Table 3, respectively, when the deviation parameter \(k_{\text{d}}\) ranges from 0.1 to 1.0 in a step of 0.1; (2) for each antenna in Table 3, the value of interference parameter \(s\) takes 0 for comparison with the RSE in Ref. [45]; (3) the second column (\(k_{\text{d}}=0\)) colored in light blue denotes that the panel is the regular panel in Section 2.4; (4) the same situation applies to the table below.  
\end{table} 
Table 3: Structural parameters of existing RRSAs.