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首页> 外文期刊>IEEE Aerospace and Electronic Systems Magazine >Radar signals analysis and modellization in the presence of JEMapplication to civilian ATC radars
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Radar signals analysis and modellization in the presence of JEMapplication to civilian ATC radars

机译：JEM在民用ATC雷达中的应用中的雷达信号分析和建模

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摘要

This paper describes the application of a simulation software and the comparison of its results with actual data recorded from operating ATC radars in S and L bands. Results obtained in an application on actual signals (relative to commercial aircraft echoes) collected from observations on the echo received at an ATC radar system are presented. These signals were recorded along many field experiments carried out by the authors on a recording system specifically developed for this purpose. Due to the constitutive and operative characteristics of the systems, the results are affected by a low spectral resolution and a strong aliasing which give rise to problems in a correct analysis. The observed results have been related to the physical phenomena generated by the structure of the complex target we suppose to be made of a rigid body and rotating parts which originate such a modulation on the echo signal that it is known in related literature as Jet Engine Modulation (JEM). These phenomena may be regarded as a signature of the particular couple “engine-aircraft body” and in some flight conditions may offer significant help to a correct characterization of the aircrafts
机译：本文介绍了仿真软件的应用，并将其结果与在S和L波段运行的ATC雷达记录的实际数据进行比较。展示了从实际应用中获得的结果（相对于商用飞机的回波），该结果是从对ATC雷达系统接收到的回波的观测中收集的。这些信号是通过作者在专门为此目的开发的记录系统上进行的许多现场实验记录的。由于系统的本构和操作特性，结果受到低光谱分辨率和强烈混叠的影响，这会导致在正确分析中出现问题。观察到的结果与由复杂目标的结构产生的物理现象有关，我们假设该目标由刚体和旋转零件组成，这些零件对回波信号产生这种调制，在相关文献中称为“喷气发动机调制” （JEM）。这些现象可能被视为特定的一对“飞机机体”的特征，并且在某些飞行条件下可能会为正确表征飞机提供重要帮助

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