物理学报Issue(9)：1-7,7.DOI:10.7498/aps.64.094304
一种高效的自适应波束域变换方法及应用研究∗
An efficient adaptive b eam-space transformation technique and its application in array pro cessing
摘要
Abstract
Beam-space transformation projects the array data into a lower space, which is not only effective in reducing computation time, improving performance, but also being capable to suppress interference. In contrast to conventional adaptive beam-space transformation method, which often requires adjusting the beam-space matrix and steering vectors online, an efficient adaptive beam-space transformation method is proposed. In the proposed method, the beam-space covariance matrix and the steering vector both have closed-forms, and do not depend on the adaptive beam-space matrix. This eliminates the online adjustment process, and, thus, improves the computational efficiency. Finally, the proposed method can also be applied to the direction of arrival (DOA) estimation. Simulation results demonstrate that it has a better DOA estimation performance than the conventional adaptive method. Furthermore, the proposed method also has another significant advantage, i.e., it is able to suppress moving interference. This can be ascribed to the proposed beam-space matrix which is independent of the historical data, and, thus, effective to avoid the mismatch between the training and application data, since this mismatch often occurs in conventional adaptive methods.关键词
自适应波束域变换/波束变换矩阵/波达方向估计/运动干扰抑制Key words
adaptive beam-space transformation/beam-space matrix/direction of arrival estimation/moving interference suppression引用本文复制引用
范展,梁国龙,王晋晋,王燕,陶凯..一种高效的自适应波束域变换方法及应用研究∗[J].物理学报,2015,(9):1-7,7.基金项目
国家自然科学基金(批准号:51279043,61201411,51209059)资助的课题.* Project supported by the National Natural Science Foundation of China (Grant Nos.51279043,61201411,51209059) （批准号:51279043,61201411,51209059）
