摘要
介绍了一种高精度的近场被动定位方法——二维MUSIC被动定位方法。它是一种在距离和方位上进行二维联合搜索的高精度被动定位方法。将MUSIC(多重信号分类)算法与近场聚焦波束形成方法相结合,能大大提高对近场目标的定位精度。先推导了基于均匀线列阵的二维MUSIC近场被动定位方法的定位原理,通过仿真比较了二维MUSIC被动定位方法与常规聚焦波束形成的定位性能,仿真表明,二维MUSIC被动定位方法的定位性能要明显高于常规的聚焦波束形成被动定位方法。并仿真了该方法在不同的阵元间距以及不同的目标距离时的定位性能,验证了该方法的可行性和有效性。
A high accuracy near field passive localization method based on 2-D MUSIC is introduced in this paper.This kind of passive location method searches the sound source in both range and bearing.The combination of the MUSIC algorithm with the near field focusing beamforming method can raise the location accuracy for the near field sound source.This paper firstly deduces the localization theory of 2-D MUSIC near-field passive localization method,and then compares the localization performance of it with the conventional focused beamforming method by simulation.The simulation result shows that the location performance of the 2-D MUSIC passive location method is better than the conventional one’s.At the end,this paper simulates the localization performance of 2-D MUSIC method for different array element spacing and different target range.Computer simulation verifies the feasibility and the effectiveness of the method proposed in the paper.
出处
《声学技术》
CSCD
2010年第5期543-547,共5页
Technical Acoustics
