A pre-requisite for antenna installation is the ability to quantify the effects on antenna performance of structures within the vicinity of the antenna. As part of the BAE Systems Antenna Modelling Facility, a software suite known as INSTANT (short for INSTalled ANTenna Performance) has been developed by Culham Electromagnetics and Lightning Ltd in conjunction with BAE Systems and TranscenData. By employing a ray tracing algorithm, INSTANT is capable of predicting antenna performance, including antenna-antenna interactions, in the presence of almost arbitrarily shaped perfectly conducting bodies. The exponential growth in ray numbers, following one-many interactions, such as edge diffraction, influences computational efficiency in many ray-tracing algorithms. By implementing ray refinement, INSTANT is able to achieve improvements in code execution times and the accuracy of the results obtained.
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机译：天线安装的先决条件是能够量化对天线附近结构对天线性能的影响的能力。作为BAE系统天线建模工具的一部分，Culham Electromagnetics and Lightning Ltd与BAE Systems和TranscenData联合开发了一个名为INSTANT（INSTalled天线性能的缩写）的软件套件。通过使用光线跟踪算法，INSTANT能够在几乎任意形状的完美导电体存在的情况下预测天线性能，包括天线之间的相互作用。在许多相互作用（例如边缘衍射）之后，射线数量的指数增长会影响许多射线跟踪算法中的计算效率。通过实现光线细化，INSTANT能够提高代码执行时间和所获得结果的准确性。
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