發(fā)布時(shí)間：2018-10-13 13:40

【摘要】：提出了一種基于雙基地電磁矢量多輸入多輸出雷達(dá)的二維收發(fā)角估計(jì)算法.針對(duì)擴(kuò)展孔徑條件下傳統(tǒng)算法的周期性角度模糊問題,提出了一種從極化信息矩陣中求取收發(fā)信號(hào)波印廷矢量來實(shí)現(xiàn)解模糊的算法.極化信息矩陣可通過張量分解從回波數(shù)據(jù)中求取.為提高發(fā)射角估計(jì)精度,給出了一種更嚴(yán)格的正交約束條件:不僅要求不同陣元間發(fā)射的信號(hào)相互正交,還要求同一陣元內(nèi)所有的偶極子天線發(fā)射的信號(hào)也相互正交.進(jìn)而可從極化信息矩陣中得到發(fā)射角的不模糊估計(jì).與傳統(tǒng)算法相比,該算法通過增大陣元間距提高角度估計(jì)性能,且不會(huì)產(chǎn)生角度模糊,避免了譜峰搜索和額外的配對(duì)過程.仿真實(shí)驗(yàn)驗(yàn)證了算法有效性.
[Abstract]:This paper presents an algorithm for estimating two-dimensional transceiver angle based on bistatic electromagnetic vector multi-input and multi-output radar. In order to solve the periodic angle ambiguity problem of traditional algorithms under extended aperture condition, a new algorithm is proposed to solve the ambiguity problem by extracting the wave printing vector from the polarization information matrix. Polarization information matrix can be obtained from echo data by Zhang Liang decomposition. In order to improve the accuracy of the estimation of the transmission angle, a more strict orthogonal constraint condition is given: not only the signals transmitted by different array elements are required to be orthogonal to each other, but also the signals transmitted by all dipole antennas in the same burst element are also required to be orthogonal to each other. Furthermore, the nonfuzzy estimation of the emission angle can be obtained from the polarization information matrix. Compared with the traditional algorithm, the algorithm improves the performance of angle estimation by increasing the distance between the elements, and does not produce angle ambiguity, thus avoiding the spectral peak search and the extra matching process. Simulation results show that the algorithm is effective.
【作者單位】： 南京理工大學(xué)電子工程與光電技術(shù)學(xué)院;
【基金】：教育部博士點(diǎn)基金(20113219110018) 南京理工大學(xué)研究基金(2010ZDJH05,2011ZDJH13)
【分類號(hào)】：TN957.51
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本文編號(hào)：2268848