高频OTH雷达射频干扰建模与仿真

Tao Wang, Zhongtao Luo, Zhaoyi Wang
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引用次数: 0

摘要

本文提出了对高频超视距雷达(OTH)的射频干扰(RFI),特别是窄带RFI和宽带RFI进行建模和仿真的方法。该模型基于随机过程和线性滤波理论,采用高斯白噪声作为线性滤波器的输入,使输出为小带宽的随机过程。在滤波器设计中,针对卷积法提出了7种响应函数,针对自回归和移动平均法提出了4组系数。此外,还提供了扩展方法来增加RFI仿真的多样性。数值实验表明,所提出的方法可以模拟实际射频信号的大部分距离-多普勒图。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Modeling and Simulation of Radio Frequency Interference for High-Frequency OTH Radar
This paper proposes to model and simulate the radio frequency interference (RFI), especially the narrowband RFI and the wideband RFI, for the high-frequency over-the-horizon (OTH) radar. Based on the theories of random process and linear filtering, the proposed models uses the white Gaussian noise as the input of a linear filter, so that the output is a random process with small bandwidth. In the filter design, seven kinds of response functions are proposed for the convolution method, and four sets of coefficients are proposed for the auto-regressive and moving-average method. Besides, extended approaches are also provided to increase the diversity of the RFI simulation. Numerical experiments demonstrate that the proposed methods can simulate most range-Doppler maps of real RFI.
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