新一代天气雷达楼的综合防雷设计

针对雷电破坏天气雷达楼的形式和途径，根据综合防雷设计的要求提出了某新一代天气雷达楼具体的防雷设计方法。在设计中，除了雷达设备本身要考虑防雷措施外，还需要对新一代天气雷达楼进行防雷建设，才能保障雷达建筑物及雷达设备的正常、可靠、安全运行。     

某相控阵天气雷达结构总体设计

相控阵天气雷达是一个较复杂的系统,其布局要求紧凑,天线阵面精度要求高,组件功耗大,与其他天气雷达相比,其结构设计更复杂。文中通过总体布局设计、天线阵面结构设计与天线阵面平面精度控制以及天线座结构设计完成了某型相控阵天气雷达的设计开发工作。同时通过天线与天线座结构刚强度计算和组件热设计计算来确保设计满足要求。目前,该雷达已交付用户,其成功研制对后续类似雷达的设计具有一定的参考价值。     

Nanomechanical Property Measurements of SrTiO<Subscript>3</Subscript> Submicron-fiber

Strontium titanate (SrTiO₃) submicron-fibers with perovskite structure were successfully synthesized by electrospinning method. The nanomechanical properties of synthesized SrTiO₃ were investigated by the novel amplitude modulation-frequency modulation (AM-FM) method based on atomic force microscope and nanoindentation technique. The results of AM-FM show that the resonant frequency of SrTiO₃ submicron-fiber is lower than that of the Si substrate, which indicates that the Young’s modulus of SrTiO₃ submicron-fiber is smaller than that of Si substrate in the range of 105–125 GPa. Nanoindentation further confirmed the results, showing a value of 104 ± 17 GPa. The atomic force microscope-based AM-FM provides us a new way to study the mechanical performance of low dimensional materials.     

X波段车载型多普勒天气雷达结构总体设计综述

给出了X波段车载型多普勒天气雷达结构总体设计,针对天气雷达的特点及技术和环境条件的要求对总体结构的几个主要组成作了简要的介绍。