【摘要】：廣播式自動(dòng)相關(guān)監(jiān)視作為國際民航組織主推的監(jiān)視技術(shù),近年來受到了廣泛關(guān)注,越來越多的飛行器配備了ADS-B收發(fā)設(shè)備。介于ADS-B信號的廣播體制以及空域流量的不斷增加,不同的ADS-B信號之間不可避免會發(fā)生交織;而信號交織會給ADS-B信號的解碼帶來嚴(yán)重影響,進(jìn)而造成信息的錯(cuò)誤讀取或丟失。針對上述問題,本文提出了一種單天線下基于累加判決的解交織算法:首先通過單天線下的有效脈沖位置檢測以及基于希爾伯特變換的交織檢測分別獲得信號的起始位置以及信號交織位置,進(jìn)而得到兩條信號之間的相對時(shí)延,從而對數(shù)據(jù)進(jìn)行累加并利用K-means方法進(jìn)行分類,最終得到比特位判決結(jié)果以實(shí)現(xiàn)交織信號分離;針對已有的解交織算法進(jìn)行了比較,驗(yàn)證本文所提算法在交織信號之間存在一定功率差時(shí)有著良好的分離效果。
[Abstract]:As the main monitoring technology of ICAO, broadcast automatic correlation surveillance has been paid more and more attention in recent years. More and more aircraft are equipped with ADS-B transceiver equipment. Because of the broadcasting system of ADS-B signal and the increasing of space traffic, the interleaving of different ADS-B signals is inevitable. The interleaving of signals will seriously affect the decoding of ADS-B signals, which will result in the error reading or loss of information. In response to the above problems, In this paper, a new algorithm of deinterleaving based on cumulative decision is proposed. Firstly, the starting position of the signal and the interleaving position of the signal are obtained by the effective pulse position detection under the single antenna and the interleaving detection based on Hilbert transform, respectively. Then the relative delay between the two signals is obtained, and then the data is accumulated and classified by K-means method. Finally, the result of bit decision is obtained to achieve the separation of interleaved signals. Compared with the existing deinterleaving algorithms, it is verified that the proposed algorithm has a good separation effect when there is a certain power difference between interleaved signals.
【作者單位】： 中國民航大學(xué)天津市智能信號與圖像處理重點(diǎn)實(shí)驗(yàn)室;
【基金】：國家重點(diǎn)研發(fā)計(jì)劃項(xiàng)目(2016YFB0502402)
【分類號】：V355;TN911.7

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