本文關鍵詞： 匹配場處理 被動定位 最小二乘算法 聲場重構(gòu)　出處：《電子與信息學報》2017年06期 　論文類型：期刊論文

【摘要】：匹配場處理通常要求接收基陣能夠覆蓋整個水層,如此大尺度的布陣方式嚴重阻礙了該方法的廣泛使用。為了緩解匹配場處理對陣形的苛刻要求,該文提出一種基于最小二乘的短垂線陣匹配場處理技術。該方法把接收陣的聲場分解為模態(tài)函數(shù)矩陣和模態(tài)系數(shù)向量,并在最小范數(shù)意義下用最小二乘算法得到了各階模態(tài)系數(shù)的估計值,在此基礎上重新構(gòu)造了短垂線陣的測量場向量,使得重構(gòu)后的測量場包含更多的環(huán)境信息,從而提高了短垂線陣匹配場處理的性能。最后,在典型的Pekeris波導環(huán)境中進行仿真,以3種布放在水面附近的短垂線陣為例,分析了匹配場被動定位的性能,并用廣義余弦量化分析了不同布陣方式對測量場的影響。結(jié)果表明:使用最小二乘算法對短陣的測量場進行聲場重構(gòu)后廣義余弦變大,此時短垂線陣匹配場處理的定位性能得到改善,驗證了該算法的有效性。
[Abstract]:The matching field processing usually requires that the receiving array can cover the whole water layer, so the widespread use of the method is seriously hindered by the large scale array arrangement. In order to alleviate the harsh requirements of matching field processing on the formation, In this paper, a method for processing the matching field of a short vertical array based on least squares is proposed, which decomposes the sound field of the receiving array into a modal function matrix and a modal coefficient vector. In the sense of minimum norm, the estimated values of each order modal coefficients are obtained by using the least square algorithm. On this basis, the measurement field vector of the short vertical array is reconstructed, which makes the reconstructed measurement field contain more environmental information. Finally, the simulation is carried out in the typical Pekeris waveguide environment. Taking three kinds of short perpendicular arrays located near the water as an example, the performance of passive location of the matching field is analyzed. The effect of different array arrangement on the measurement field is analyzed by using generalized cosine quantization. The results show that the generalized cosine becomes larger after the sound field reconstruction of the measurement field of the short array by using the least square algorithm. At the same time, the location performance of the short vertical array matching field processing is improved, and the effectiveness of the algorithm is verified.
【作者單位】： 西北工業(yè)大學航海學院;
【分類號】：TB56

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