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所属单位：电子信息工程学院
发表刊物：IEEE ACCESS
关键字：Sparse extension nested array monostatic multiple-input multiple-output (MIMO) radar degree of freedom (DOF)
摘要：The two-level nested array geometry, which systematically nests two uniform linear subarrays, is proved to offer O(N-2) degrees of freedom (DOFs) with only N sensors. In this paper, a novel sparse extension array geometry for nested multiple-input multiple-output radar is proposed to provide O(N-4) DOFs with N sensors. In the proposed geometry, both the transmitter and receiver are equipped with the two-level nested arrays, where we particularly extend the inter-element spacing of the transmitter with a sparse extension factor, leading to a great increase of DOF. Furthermore, we derive the closed-form expressions for the sensor locations and the available DOFs. Spatial smoothing-based MUSIC algorithm is employed to validate the effectiveness and superiority of the proposed sparse extension array for direction of arrival estimation.
ISSN号：2169-3536
是否译文：否
发表时间：2017-01-01
合写作者：郑旺,Shi, Junpeng
通讯作者：张小飞