【摘要】：廣播式自動(dòng)相關(guān)監(jiān)視作為國(guó)際民航組織主推的監(jiān)視技術(shù),近年來(lái)受到了廣泛關(guān)注,越來(lái)越多的飛行器配備了ADS-B收發(fā)設(shè)備。介于ADS-B信號(hào)的廣播體制以及空域流量的不斷增加,不同的ADS-B信號(hào)之間不可避免會(huì)發(fā)生交織;而信號(hào)交織會(huì)給ADS-B信號(hào)的解碼帶來(lái)嚴(yán)重影響,進(jìn)而造成信息的錯(cuò)誤讀取或丟失。針對(duì)上述問(wèn)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(guò)單天線下的有效脈沖位置檢測(cè)以及基于希爾伯特變換的交織檢測(cè)分別獲得信號(hào)的起始位置以及信號(hào)交織位置,進(jìn)而得到兩條信號(hào)之間的相對(duì)時(shí)延,從而對(duì)數(shù)據(jù)進(jìn)行累加并利用K-means方法進(jìn)行分類(lèi),最終得到比特位判決結(jié)果以實(shí)現(xiàn)交織信號(hào)分離;針對(duì)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(hào)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(guó)民航大學(xué)天津市智能信號(hào)與圖像處理重點(diǎn)實(shí)驗(yàn)室;
【基金】：國(guó)家重點(diǎn)研發(fā)計(jì)劃項(xiàng)目(2016YFB0502402)
【分類(lèi)號(hào)】：V355;TN911.7

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