Rapid Ray Tracing Analysis of Scattered Field from an Aircraft Model in Super Wide Area
Rapid Ray Tracing Analysis of Scattered Field from an Aircraft Model in Super Wide Area
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DOI：
10.1109/bwcca.2013.37
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发表时间：
2013-10
期刊：
影响因子：
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通讯作者：
J. Honda;T. Otsuyama
中科院分区：
文献类型：
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作者：
J. Honda;T. Otsuyama
该系统基于无源双基地雷达（PBR），预计作为飞机监视系统，使用来自飞机的散射波，该波比定向波小得多。在这样的系统中，如何定位接收器以构建高性能的监控系统非常重要。因此，需要进行现场估计来优化分配接收器。然而，由于当前的数值技术（例如射线追踪方法（RTM））为了搜索从源到接收器的射线而消耗大量计算时间，因此它们仅适用于几平方公里内的小区域。其分析区域足以用于移动电话或数字广播的调查，但对于空中交通管理（ATM）系统而言，其分析区域太小而无法获得大范围的现场分布。因此，在本文中，我们提出了一种新的数值算法来分析超广域中飞机的散射场，以应用于ATM系统的开发。所提出的基于RTM的算法的本质是简化从源到接收器的射线搜索，从而减少计算时间。我们讨论了我们的方法的原理和电磁场理论，并展示了简单飞机模型的散射功率和延迟曲线。
The system based on the Passive Bistatic Radar (PBR) expected as the surveillance system of aircraft, uses scattered waves from an aircraft which are much smaller than the directed wave. In such system, it is important how to locate receivers in order to construct a high performance of surveillance system. Consequently, field estimation is required to optimally allocate receivers. However, since current numerical techniques such as Ray Tracing Method (RTM) consume much computation time in order to search rays from source to receiver, they are applied to only small area within a few square kilometers. Its analytical areas are enough to investigations for cellular phone or digital broadcasting, but it is too small to obtain the field distribution in the wide area for the Air Traffic Management (ATM) system. Therefore, in this paper, we propose a new numerical algorithm for analyzing scattered fields from an aircraft in super wide area in order to apply to the development of the ATM system. The essence of the proposed algorithm based on the RTM is to simplify the ray searching from source to receiver, resulting in reducing of the computation time. We discuss the principle of our method and the theory of electromagnetic field, and we show scattered powers and delay profiles from a simple aircraft model.