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谱估计测向的MUSIC算法研究 被引量:3

Research on MUSIC Algorithm for Direction Finding Based on Space Spectrum Estimation
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摘要 由天线阵对被测信号的响应矩阵的特征值,可得到对应于信号和噪声的特征向量,以此扩展成信号子空间和噪声子空间.利用信号子空间与噪声子空间的正交关系,即可求得信号方位角的估计值.这种空间谱估计测向的MUSIC算法,用于圆形天线阵对非相干信号进行测向,可以克服一般干涉仪测向体制中测向模糊和测向盲区的问题. The responses of antenna array to the signals which to be measured are composed to be a matrix.From its eigenvalue,the eigenvectors corresponding to the signals and noise can be obtained.And the sub-space of the signals and noise can be expanded through them.With the quadrature between the sub-space of the signals and noise,the estimate value to the angle of arrival(AOA) of the signals was obtained.MUSIC algorithm is a typical method of the space spectrum estimation of direction,which can be used in the round array of antennas to find directions of non-correlative signals,will overcome the questions in the common system of director finding by interferometer,which are the illegibility and the blind-section.
出处 《海军航空工程学院学报》 2007年第5期535-537,558,共4页 Journal of Naval Aeronautical and Astronautical University
关键词 圆阵 MUSIC算法 测向 circle array MUSIC algorithm direction finding.
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参考文献4

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二级参考文献4

  • 1Schmidt R O.Mutiple emitter location and signal parameter estimation[J].IEEE Trans.Antanna Propagat.,1986,AP-34(3):276-280. 被引量:1
  • 2Stoica P and Nehorai A.MUSIC,maximum lidelihood,and Cramer-Rao bound[J].IEEE Trans.Signal Processing,1989,37(5):720-741. 被引量:1
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