寬帶衛(wèi)星通信系統中強干擾抵消方法
發(fā)布時間:2018-08-17 08:27
【摘要】:在強干擾環(huán)境下,星上信道化器的關鍵部件模數轉換器(ADC)會發(fā)生數據溢出,嚴重影響星上載荷轉發(fā)性能。為此,提出了一種基于抵消思路的寬帶衛(wèi)星通信系統中強干擾抑制方法。該方法首先在數字域對強干擾進行檢測、提取和相位幅度調整,然后在模擬域進行強干擾抵消,最后通過檢測反饋保證抵消效果。給出了數字域提取濾波器的基本設計方法和實現步驟,并且結合工程實際,采用數學形態(tài)學濾波方法消除衛(wèi)星寬頻帶噪底起伏帶來的影響。研究與仿真結果表明,該方法能對強干擾進行有效抑制。
[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.
【作者單位】: 解放軍理工大學通信工程學院;總參第六十三研究所;
【分類號】: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.
【作者單位】: 解放軍理工大學通信工程學院;總參第六十三研究所;
【分類號】:TN927.2
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