CAJ | 학술논문

由于传统波达方向（DOA）估计算法对接收天线阵列的阵元一致性要求高，即幅度和相位响应要求一致，在工程应用中受到较大限制。针对该问题，结合均匀圆阵的特点，通过引入阵元幅度和相位不一致因子对传统MUSIC算法的模型加以改进，提出了一种改进的MUSIC算法。该算法降低了阵元的一致性要求，可通过迭代求解的方法来完成对多个信源来波方向进行估计。仿真和分析结果表明，提出的算法可有效地进行多个目标的DOA估计。
유우전통파체방향（DOA）고계산법대접수천선진렬적진원일치성요구고，즉폭도화상위향응요구일치，재공정응용중수도교대한제。침대해문제，결합균균원진적특점，통과인입진원폭도화상위불일치인자대전통MUSIC산법적모형가이개진，제출료일충개진적MUSIC산법。해산법강저료진원적일치성요구，가통과질대구해적방법래완성대다개신원래파방향진행고계。방진화분석결과표명，제출적산법가유효지진행다개목표적DOA고계。
The traditional direction of arrival (DOA)estimation algorithm has high conformity with array ampli-tude and phase element of receiving arrays . Consequently it is limited seriously in engineering application . Inthis paper,an improved model of MUSIC algorithm is proposed based on the variances of uniform circular array element′s amplitude and phase,and it reduces the request of the conformity of the array element . The improved algorithm can be utilized to estimate the direction of the receiving waves from multiple information sources through iteration procedure . The simulation results indicate that the proposed algorithm can estimate the DOA from different targets effectively .