CAJ | 학술논문

MUSIC（MUltiple SIgnal Classification）等谱峰搜索类算法的计算量主要集中于谱峰搜索过程，加大搜索步长虽可减小计算量，但会引起空间谱的畸变从而造成测向误差。先采用大步长搜索确定谱峰大约位置后再用小步长搜索可以减小测向误差，且增加的计算量较小，但其实时性不佳。文中提出了基于重心估计的入射方向确定方法，利用现有谱峰搜索数据进行后处理，当搜索步长远大于MUSIC 测向算法本身的均方根误差（RMSE， Root Mean Square Error）时，可用很小的计算量大大提高测向精度，具有良好的工程应用价值。
MUSIC（MUltiple SIgnal Classification）등보봉수색류산법적계산량주요집중우보봉수색과정，가대수색보장수가감소계산량，단회인기공간보적기변종이조성측향오차。선채용대보장수색학정보봉대약위치후재용소보장수색가이감소측향오차，차증가적계산량교소，단기실시성불가。문중제출료기우중심고계적입사방향학정방법，이용현유보봉수색수거진행후처리，당수색보장원대우MUSIC 측향산법본신적균방근오차（RMSE， Root Mean Square Error）시，가용흔소적계산량대대제고측향정도，구유량호적공정응용개치。
The computation of peak-searching algorithms such as MUSIC (MUltiple SIgnal Classification)is mainly con-centrated in the process of peak-searching.One of countermeasures is to increase the searching step.Meanwhile,the esti-mation errors arise because the spatial spectrum is distorted.A compromise method is to search with a minor step after searching with a larger step to acquire the approximate incident angles.While it is time costly because of its serial process of 2-step searching angles.An angle estimation method based on the centrobaric estimation for MUSIC algorithm is proposed in this paper.It only needs post-processing upon peak-searching data the same as before.When the searching step is much larger than the essential RMSE (Root Mean Square Error)of MUSIC,the presented method can greatly improve the accura-cy by a tittle computation.It is useful to practical engineering applications.