Broadband direction of arrival estimation via spatial co-prime sampling and polynomial matrix methods
Broadband direction of arrival estimation via spatial co-prime sampling and polynomial matrix methods
复制标题
通过空间互质采样和多项式矩阵方法进行宽带到达方向估计
DOI：
10.1049/joe.2019.0192
复制
发表时间：
2019
影响因子：
--
通讯作者：
Coventry W
中科院分区：
文献类型：
--
作者：
Coventry W
到达方向估计是许多主动和被动系统的一个关键方面，包括雷达和电子战应用。扩频调制方案在雷达和通信系统中变得越来越普遍；由于这种调制使信号能量在频率和时间上扩散，这种信号源促使人们需要新的检测和定位方法。宽带天线及其后续信号处理系统在成本和功耗方面都是昂贵的。这就限制了现实世界中可行数组的元素数量。本文提出了一种新的基于共质宽带MUSIC的到达方向算法。新方法的主要特点是，它旨在通过利用一种通过多项式MUSIC算法应用于宽带测向问题的共质数传感方案来减少给定孔径下的天线单元数量。模拟数据的对比结果表明，所提出的co素数多项式MUSIC与等效物理孔径的均匀线性阵列方法具有相当的性能。
Direction of arrival estimation is a crucial aspect of many active and passive systems, including radar and electronic warfare applications. Spread spectrum modulation schemes are becoming ever more common in both Radar and Communications systems; because such modulation spreads the signal energy in frequency and time, such sources prompt the need for new approaches for detection and location. Broadband antennas and their subsequent signal processing systems are expensive in terms of both cost and power consumption. This forces a limitation on the number of elements in a feasible real‐world array. In this paper, a novel co‐prime broadband MUSIC‐based direction of arrival algorithm is presented. The main feature of the new method is that it aims to reduce the number of antenna elements for a given aperture by utilising a co‐prime sensing scheme applied to the problem of broadband direction finding via the polynomial MUSIC algorithm. Comparative results using simulated data show that the proposed co‐prime polynomial MUSIC has comparable performance to those obtained using a uniform linear array method with an equivalent physical aperture.