基于最小色散方法的廣播式自動相關(guān)監(jiān)視壓制式干擾抑制

王文益; 劉慎悅; 吳仁彪; 盧丹; 王璐; 賈瓊瓊

doi:10.11999/JEIT170636

基于最小色散方法的廣播式自動相關(guān)監(jiān)視壓制式干擾抑制

doi: 10.11999/JEIT170636 cstr: 32379.14.JEIT170636

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出版歷程
- 收稿日期: 2017-06-30
- 修回日期: 2017-12-06
- 刊出日期: 2018-04-19

Jamming Suppression for Automatic Dependent Surveillance-Broadcast Based on Minimum Dispersion Method

摘要

摘要: 壓制式干擾是廣播式自動相關(guān)監(jiān)視(ADS-B)系統(tǒng)面臨的最常見且最有威脅的干擾之一。該文將最小色散算法應(yīng)用到ADS-B信號壓制式干擾抑制的研究中。首先，利用ADS-B信號的脈沖特性，將以往只考慮二階統(tǒng)計量的形式擴展，重新建立p范數(shù)約束優(yōu)化模型。然后，提取觀測信號更低階統(tǒng)計量中的有用信息，將解算最優(yōu)加權(quán)矢量轉(zhuǎn)化為一個最優(yōu)化問題。最后，解算最優(yōu)權(quán)矢量，對觀測信號進行空域濾波，完成ADS-B的壓制式干擾抑制，并對抑制結(jié)果進行性能分析。文中提供的仿真實驗結(jié)果驗證了算法的有效性，該方法不需要知道ADS-B信號來向，也無需估計協(xié)方差矩陣。
- 廣播式自動相關(guān)監(jiān)視信號 /
- 抗壓制式干擾 /
- 最小色散 /
- 脈沖特性
Abstract: Jamming is the one of most common and serious threats for Automatic Dependent Surveillance- Broadcast (ADS-B) system. Minimum dispersion method is applied to jamming suppression for ADS-B in this paper. Firstly, based on the pulse characteristic of ADS-B, minimum dispersion method is obtained by solving the constrained optimization issue of p-norm, which expands the case that exploits only the second-order statistics of the array output in past. Then, the useful information in lower order statistics is used to convert the solution of optimal weight vector into an optimization problem. Finally, jamming is mitigated by spatial filtering and the performance is analyzed. Simulation results demonstrate the effectiveness of the proposed algorithm. The anti-jamming performance of this method is not limited by the prior knowledge of ADS-B direction and the covariance matrix estimation.
- Automatic Dependent Surveillance-Broadcast (ADS-B) signal /
- Anti-jamming /
- Minimum dispersion /
- Pulse characteristics

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