低頻寬帶低空地面反射特性建模仿真及驗(yàn)證
[Abstract]:The low frequency wideband signal has the advantage in improving the radar recognition ability to the target. In order to determine the low altitude surface reflection coefficient of broadband signal, the low altitude reflection characteristic of low frequency wideband signal is modeled in this paper, and a method of synthesizing the equivalent ground reflection coefficient of broadband signal through the ground reflection coefficient of each frequency point in narrow band is proposed. The relationship between the equivalent ground reflection coefficient of wideband signal and the ground characteristics (relative dielectric constant, conductivity), ground erasing angle and antenna polarization characteristic is studied by simulation, and the equivalent ground reflection coefficient of wideband signal is determined. The ground reflection coefficient of typical environment is tested by the method of low altitude antenna pattern measurement in typical environment. The results show that the equivalent ground reflection coefficient model of wideband signal is effective. It provides a certain theoretical basis for broadband radar target detection.
【作者單位】: 江南機(jī)電設(shè)計(jì)研究所;
【基金】:國防基礎(chǔ)科研項(xiàng)目(0420132104)
【分類號(hào)】:TN957.51
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