The purpose of this research is to investigate how to exploit frequency and polarization techniques in reducing the effects of jamming against UAV relay communication links in an urban warfare environment. There have been early studies investigating the diversity techniques against multipath and fading problems in urban environments. A medium without any jamming issues seems almost impossible to exist in today's warfare. Basically, noise jamming issues were taken into consideration. Urbana Wireless Toolset was used as the computer simulation. Even though it is a powerful tool to predict the radio wave propagation in urban environments, due to the problems about modeling the cities (lack of detail, like the shapes of the buildings, objects and vehicles that could be found in the streets, and other details that would contribute to the propagation mechanisms), it can only give us a trend with some guidelines instead of an exact mapping of propagation.
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机译：这项研究的目的是研究如何利用频率和极化技术来减少在城市战环境中对无人机中继通信链路的干扰影响。已有早期研究调查了针对城市环境中多径和衰落问题的多样性技术。在当今的战争中，几乎没有可能存在没有任何干扰问题的媒介。基本上，噪声干扰问题已得到考虑。 Urbana Wireless Toolset被用作计算机模拟。尽管由于城市建模方面的问题（缺乏详细信息，例如建筑物的形状，在街道上可以找到的物体和车辆等），它还是预测无线电波在城市环境中传播的强大工具。有助于传播机制的细节），它只能为我们提供一些指导方针的趋势，而不是精确的传播映射。
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