CAJ | 학술논문

阵列单通道相比多通道具有复杂度低、成本小的优点。针对以往阵列单通道测向模型估计精度较低的问题,基于随机过程理论,构建了阵列单通道波达方向( direction of arrival, DOA)估计模型。在此模型基础上,推导阵列单通道下均匀线阵和均匀圆阵导向矢量,并将MUSIC算法运用于阵列单通道DOA估计。由于该模型充分利用了阵元的幅相信息,无需恢复协方差矩阵,因此具有较高精度和分辨率。仿真实验验证了模型的可行性和有效性。
진렬단통도상비다통도구유복잡도저、성본소적우점。침대이왕진렬단통도측향모형고계정도교저적문제,기우수궤과정이론,구건료진렬단통도파체방향( direction of arrival, DOA)고계모형。재차모형기출상,추도진렬단통도하균균선진화균균원진도향시량,병장MUSIC산법운용우진렬단통도DOA고계。유우해모형충분이용료진원적폭상신식,무수회복협방차구진,인차구유교고정도화분변솔。방진실험험증료모형적가행성화유효성。
Compared with the multiple channels system, the single channel system has lower hardware complexity and cost. Aiming at the problem that the existed direction finding models based on single channel receiver have low estimation accuracy, a novel model for direction of ar-rival ( DOA) estimation with a single channel receiver is established. Then, on the basis of the model, the steering vectors of uniform linear array ( ULA) and uniform circular array ( UCA) with switch antenna are derived. Furthermore, MUSIC algorithm is exploited to perform DOA es-timation with a single channel receiver and attains a higher accuracy and resolution because the model utilizes the amplitude-phase information sufficiently and does not need to retrieve covari-ance matrix. Finally, several simulations are performed to verify the validity of the proposed model.