宽带卫星通信系统中强干扰抵消方法
发布时间:2018-08-17 08:27
【摘要】:在强干扰环境下,星上信道化器的关键部件模数转换器(ADC)会发生数据溢出,严重影响星上载荷转发性能。为此,提出了一种基于抵消思路的宽带卫星通信系统中强干扰抑制方法。该方法首先在数字域对强干扰进行检测、提取和相位幅度调整,然后在模拟域进行强干扰抵消,最后通过检测反馈保证抵消效果。给出了数字域提取滤波器的基本设计方法和实现步骤,并且结合工程实际,采用数学形态学滤波方法消除卫星宽频带噪底起伏带来的影响。研究与仿真结果表明,该方法能对强干扰进行有效抑制。
[Abstract]:In the environment of strong interference, the key component of on-board channelizer, (ADC), will overflow the data, which will seriously affect the on-board load forwarding performance. A strong interference suppression method for broadband satellite communication systems based on cancellation is proposed. The method firstly detects, extracts and adjusts the amplitude of strong interference in digital domain, then cancels strong interference in analog domain, and finally guarantees the cancellation effect by detecting feedback. The basic design method and implementation steps of digital domain extraction filter are presented. Combined with engineering practice, mathematical morphology filtering method is used to eliminate the influence of satellite wideband noise bottom fluctuation. The research and simulation results show that this method can effectively suppress the strong interference.
【作者单位】: 解放军理工大学通信工程学院;总参第六十三研究所;
【分类号】:TN927.2
[Abstract]:In the environment of strong interference, the key component of on-board channelizer, (ADC), will overflow the data, which will seriously affect the on-board load forwarding performance. A strong interference suppression method for broadband satellite communication systems based on cancellation is proposed. The method firstly detects, extracts and adjusts the amplitude of strong interference in digital domain, then cancels strong interference in analog domain, and finally guarantees the cancellation effect by detecting feedback. The basic design method and implementation steps of digital domain extraction filter are presented. Combined with engineering practice, mathematical morphology filtering method is used to eliminate the influence of satellite wideband noise bottom fluctuation. The research and simulation results show that this method can effectively suppress the strong interference.
【作者单位】: 解放军理工大学通信工程学院;总参第六十三研究所;
【分类号】:TN927.2
【共引文献】
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