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电子学报  2013 

MIMO声纳方位估计子空间拟合快速算法

DOI: 10.3969/j.issn.0372-2112.2013.10.015, PP. 1964-1968

Keywords: 多输入多输出,子空间拟合,方位估计,吉布斯抽样,计算复杂度

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Abstract:

为了充分利用多输入多输出(multipleinputmultipleoutput,MIMO)声纳的虚拟阵列孔径的性能,针对目标的方位估计问题,提出了一种MIMO声纳系统的目标方位估计方法,该方法由发射阵列发射正交信号,接收阵列首先对接受信号进行匹配滤波,然后构造子空间拟合关系,最后采用马尔可夫蒙特卡罗吉布斯抽样方法解决子空间拟合求解运算量大的问题.仿真研究表明,两目标条件下,采用该方法的MIMO声纳系统方位估计精度在中低信噪比条件下接近MIMO最大似然方位估计,优于其它MIMO阵列方位估计方法,而运算量只是最大似然方法的约1/4.水池试验结果验证了算法的有效性.

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