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首页> 外文学位 >The design, simulation, and implementation of the communications downlink for the Ionospheric Measurement Nanosatellite-Formation (ION-F).
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The design, simulation, and implementation of the communications downlink for the Ionospheric Measurement Nanosatellite-Formation (ION-F).

机译：电离层测量纳米卫星形成（ION-F）的通信下行链路的设计，仿真和实现。

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摘要

The link budget is a tool to account for the losses between the satellite and the receiver. Each component in the path is included with actual hardware characteristics or reasonable estimations. A step-by-step approach yields a thorough analysis of where the losses occur so they can be reduced or eliminated. The link budget is calculated for both the bit energy to noise ratio, and the received signal intensity.; Antenna structure modeling is used to predict the performance of antenna systems. Three types of models are used to evaluate the performance of a 9-element helical array antenna. Theoretical calculations of the electric field based on the antenna structure are compared to one model based on the Numerical Electromagnetics Code (NEC) and another model using Rao-Wilton-Glisson approach to characterize the antenna using triangle-shaped surfaces. The results of these three models are compared with the test result of a helical antenna array.
机译：链路预算是解决卫星与接收机之间损失的一种工具。路径中的每个组件都包含实际的硬件特性或合理的估计。循序渐进的方法可以对损失发生的位置进行全面分析，从而可以减少或消除损失。为比特能量噪声比和接收信号强度计算链路预算。天线结构建模用于预测天线系统的性能。三种类型的模型用于评估9元素螺旋阵列天线的性能。将基于天线结构的电场理论计算与基于数值电磁法（NEC）的一个模型以及使用Rao-Wilton-Glisson方法表征三角形表面的天线的另一模型进行了比较。将这三个模型的结果与螺旋天线阵列的测试结果进行比较。

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