本文關(guān)鍵詞：利用導(dǎo)向向量旋轉(zhuǎn)和聯(lián)合迭代優(yōu)化的自適應(yīng)波束形成算法研究　出處：《聲學(xué)學(xué)報(bào)》2016年03期 　論文類型：期刊論文

  更多相關(guān)文章： 自適應(yīng)波束形成 導(dǎo)向誤差 降維算法 變換矩陣 導(dǎo)向矢量 子空間 干擾方向 算法設(shè)計(jì) 迭代優(yōu)化 最小方差

【摘要】：針對大型陣列中自適應(yīng)波束形成技術(shù)的實(shí)時(shí)性和魯棒性問題,基于最小方差無失真響應(yīng)(Minimum Variance Distortionless Response,MVDR)波束形成的信號模型框架,提出一種通過對導(dǎo)向矢量進(jìn)行處理以降低干擾的自適應(yīng)波束形成算法——穩(wěn)健聯(lián)合迭代優(yōu)化-導(dǎo)向自適應(yīng)(Robust Joint Iterative Optimization-Direction Adaptive,RJIO-DA)算法。在聯(lián)合迭代優(yōu)化的基礎(chǔ)上,將降維變換矩陣的每一個(gè)列向量看作獨(dú)立的方向向量,引導(dǎo)子空間內(nèi)每一個(gè)維度上的權(quán)值迭代,同時(shí)旋轉(zhuǎn)導(dǎo)向向量,減小了由于導(dǎo)向誤差的不確定性而導(dǎo)致的性能下降。仿真實(shí)驗(yàn)結(jié)果表明,與現(xiàn)有的降維算法相比,RJIO-DA算法計(jì)算復(fù)雜度低、收斂率高、魯棒性好,可在期望方向上穩(wěn)健地聚集波束,更好地形成干擾方向的自適應(yīng)零陷。
[Abstract]:According to the adaptive large array beamforming in real-time and robustness problems, based on the minimum variance distortionless response (Minimum Variance Distortionless Response, MVDR) signal model framework of beamforming, proposes a robust joint iterative optimization - oriented adaptive beam through processing the steering vector to reduce the interference of the algorithm (Robust Joint Iterative Optimization-Direction Adaptive RJIO-DA) algorithm. Based on joint iterative optimization, each column vector dimensionality reduction transformation matrix as independent direction vector, guide weight iterative each dimension sub space, while rotating the steering vector, reduce the performance due to the uncertainty of the orientation error drop. Simulation results show that compared with the existing dimension reduction algorithms, RJIO-DA algorithm has low computational complexity, high convergence rate, The robustness is good, and the beam can be steadily gathered in the desired direction, and the adaptive zero subsidence of the direction of interference can be better formed.

【作者單位】： 麗水學(xué)院工程與設(shè)計(jì)學(xué)院;浙江工業(yè)大學(xué)信息工程學(xué)院;
【基金】：國家科技支撐計(jì)劃課題(2013BAF07B03) 浙江省自然科學(xué)基金(LY13F010009)資助
【分類號】：TN911.7
【正文快照】： 自適應(yīng)波束形成技術(shù)是陣列信號處理領(lǐng)域的關(guān)鍵技術(shù)之一,廣泛應(yīng)用于雷達(dá)、通信、聲吶等領(lǐng)域W。為獲得較高的陣列X椧婧徒險(xiǎn)靼甑牟ㄊ，

本文編號：1356167