一種新的多目標(biāo)盲波束形成技術(shù)研究
Study on new blind beamforming for multitargets
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摘要: 該文提出了一種新的多目標(biāo)盲波束形成算法。該方法在最小二乘恒模算法的基礎(chǔ)上,通過對(duì)一種新的代價(jià)函數(shù)的最小化,來盲估計(jì)波束形成器的權(quán)矢量,從而完成對(duì)多目標(biāo)的分離與定向。同時(shí),采用一種改進(jìn)的神經(jīng)網(wǎng)絡(luò)結(jié)構(gòu)解決了最小二乘算法中矩陣求逆的運(yùn)算,不但能有效提高運(yùn)行速度,而且易于用硬件實(shí)時(shí)實(shí)現(xiàn)盲波束形成。仿真實(shí)驗(yàn)驗(yàn)證了該算法的有效性和正確性。Abstract: A new blind beamforming algorithm for multitargets is presented in this paper. This method can estimate the weights of beamformers blindly by minimizing a new cost function based on least-squares constant modulus algorithm so as to separate the multitargets and find the direction. At the same time, a developed neural network is used to compute the inverse of a matrix, which not only improve the computing speed but also use easily hardware to carry out the blind beamforming. Simulation proves correctness of this algorithm.
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