ID 原文 译文
22065 微机电系统(MEMS)移相器优势明显，但由于相控阵天线工作环境复杂，环境载荷会导致 MEMS 移相器结构变形，进而直接降低整个相控阵天线的性能。 Micro Electronic Mechanical System (MEMS) phase shifter has obvious advantages for PAA, but there always exists structural deformation caused by the complex work environment and environmental load of the PAA, which has serious impact over the performance of the PAA.
22066 为此，该文研究 MEMS 移相器关键结构参数和电性能之间的耦合关系，将复杂环境要素对物理结构的影响传递到结构参数和电参数上，推导出分布式 MEMS 移相器的机电集成模型，并利用集成模型对变形 MEMS 移相器进行电性能快速评估和结构公差计算。 Therefore, the coupling between the key structural parameters of MEMS phase shifter and the electrical parameters is studied by transmitting the influence of complex environmental factors on structure of MEMS to the structural and electrical parameters. The electromechanical integrated model of distributed MEMS phase shifter is derived. Besides, the rapid performance assessment and structural tolerance of the deformed MEMS phase shifter is calculated based on the coupled model.
22067 仿真结果说明了集成模型的有效性和工程应用价值。 The simulation results show the effectiveness of the coupled model and the engineering application value.
22068 针对基于几何光学-微扰法(GO-SPM)的传统双尺度模型对截断波数敏感的问题，该文建立了一种基于几何光学-小斜率近似(GO-SSA)的改进双尺度模型。该模型将小尺度部分的微扰法替换为一阶小斜率近似，并改进镜向分量的几何光学解。 Considering the fact that the classical two scale model which is based on the Geometrical Optics-Small Perturbation Method (GO-SPM) is sensitive to the cut-off wave number, a two scale model derived from the Geometrical Optics-Small Slope Approximation (GO-SSA) is established. In this model, the SPM in the classical two scale model is replaced by the first order Small Slope Approximation (SSA1). At the same time, the solution of geometrical optics for specular contribution is modified.
22069 仿真表明该方法在获取传统双尺度精度的同时，不需要考虑截断波数的选取问题。 The simulations show that GO-SSA can get the same accuracy as GO-SPM while do not need to consider the choice of cut-off wave number.
22070 针对Elfouhaily 海浪谱模型的特点，简化 GO-SSA 积分形式。 The integral equation of GO-SSA is simplified based on the characteristics of Elfouhaily wave spectrum.
22071 最后采用 GO-SSA 对以 Elfouhaily 海浪谱建模的海表面的单双站极化散射特性进行了仿真分析。 At last, the full polarimetric scattering characteristics of Elfouhaily ocean model in monostatic and bistatic cases are simulated and analyzed.
22072 发现双站极化散射中，粗糙表面的斜率调制导致交叉极化出现了异于传统模型的分布。 It can be found that the results of cross polarization present an interesting distribution with variation of angles which is different from classical models.
22073 同时在全空域的双站极化散射仿真中，发现所有的极化方式在方位向内均存在极小值。 In the three-dimensional results of bistatic scattering, the scattered direction with minimum value always exists in every polarization form.
22074 该极小值的大小与环境参数密切相关，在环境参数反演方面具有应用潜力。 The value of the scattering power in this direction has relationship with the parameters of the environment, which has a potential application to the parameter inversion.