Multi-dimensional scattering properties diagnosis system of scale aircraft model in an anechoic chamber

Chufeng Hu, Zhou Zhou, Nanjing Li, Kun Zhang

科研成果: 期刊稿件文章同行评审

2 引用 (Scopus)

摘要

Aiming at the concept of ¿diagnosis¿, a simple and effective broadband radar cross section (RCS) measurement system is constructed, and some multi-dimensional scattering properties diagnosis techniques are presented based on the system. Firstly, a stepped-frequency signal is employed to achieve high range resolution, combining with a variety of signal processing techniques. Secondly, cross-range resolution is gained with a rotating table, and the high-resolution two-dimensional (2-D) imaging of the scale model is obtained by the microwave imaging theory. Finally, two receiving antennas with a small distance in altitude are used, and the three-dimensional (3-D) height distribution of scattering points on the scale model is extracted from the phase of images. Some typical bodies and a scale aircraft model are diagnosed in an anechoic chamber. The experimental results show that, after scaling with a metal sphere, the accurate one-dimensional (1-D) RCS pattern of the model is obtained, and it has a large dynamic range. When the bandwidth of the transmitting signal is 4 GHz, the resolution of the 2-D image can reach to 0.037 5 m. The 3-D height distribution of scattering points is given by interferometric measurement. This paper provides a feasible way to obtain high-precision scattering properties parameters of the scale aircraft model in a conventional rectangular anechoic chamber.

源语言英语
页(从-至)588-595
页数8
期刊Journal of Systems Engineering and Electronics
25
4
DOI
出版状态已出版 - 1 8月 2014

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