| 摘要: |
| 针对目标波达方向(DOA)估计的子空间类算法工程实现上的问题，提出了一种次最小冗余线阵的目标DOA估计方法。该方法应用孔径合成理论和最小冗余线阵理论，在保证阵列孔径等价的前提下，从工程应用的实际问题出发，对次最小冗余线阵的阵元配置进行研究。在分析MUSIC及MMUSIC算法的基础上，对次最小冗余线阵进行仿真。通过与相同孔径的均匀线阵和最小冗余线阵对比表明，次最小冗余线阵与相同孔径的均匀线阵性能相仿，并有更小的计算复杂度，比最小冗余线阵有更大的阵元灵活性，可以解决一般最小冗余线阵不能解决的相干信源的DOA估计问题。 |
| 关键词: 相干信源 DOA估计 子空间类算法 次最小冗余线阵 |
| DOI： |
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| 基金项目: |
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| A DOA estimation method based on sub-minimum redundancy linear array |
| HU Zi-yang,REN Yuan |
| () |
| Abstract: |
| In order to solve the problems in engineering implementation of DOA estimation,a new method based on sub-minimum redundancy linear array is proposed.In order to have equal array aperture and favour engineering application,the configuration of sensors for sub-minimum redundancy linear array is studied according to the theory of aperture synthesis and minimum redundancy linear array.MUSIC and MMUSIC algorithms for sub-minimum redundancy linear array are simulated.Compared with uniform linear array(ULA) with the same array aperture,sub-minimum redundancy linear array has similar performance but smaller amount of calculation;compared with minimum redundancy linear array with the same array aperture,sub-minimum redundancy linear array is more flexible for selecting sensors and has estimation capability for coherent sources. |
| Key words: coherent source DOA estimation subspace algorithm sub-minimum redundancy linear array |
