中文说明：
改进的非相干信号子空间宽带测向算法(最大功率频点选择)
研究了非相干信号子空间高分辨 率宽带测向算法(ISM),提出了基于最大功率进行频点选择的改进的ISM算法,即将接收的时域信号经傅里叶变换后,选取代表最高功率的子带的频点来构造 频谱密度矩阵,然后将该矩阵应用于窄带测向算法进行测向,提高了测向精度,减小了运算量.计算机仿真表明,新算法比原算法在分辨概率达到100%时的信噪 比降低了9.5 dB,并且方差也明显比原算法小.
English Description：
The improved non-coherent signal subspace wide-band direction-finding Algorithm (maximum power frequency point selection) has studied the non-coherent signal subspace high resolution wide-band direction-finding Algorithm (ISM) , and has proposed the improved ISM algorithm based on maximum power for frequency point selection, after the received time domain signal is Fourier transform, the frequency point representing the highest power subband is selected to construct the spectrum density matrix, and then the matrix is applied to narrow band direction finding algorithm to improve direction finding precision, reduced the amount of computation. Computer simulation shows that the snr of the new algorithm is 9.5 DB lower than that of the original algorithm when the resolution probability is 100% , and the variance is obviously smaller than that of the original algorithm.