二维嵌套混合MIMO相控阵雷达接收阵列设计

doi:10.7527/S1000-6893.2017.21546

Abstract

Abstract: Division of the transmit array of the two-dimensional hybrid Multiple-Input Multiple-Output (MIMO) phased-array radar will cause the problem of loss of Degrees of Freedom (DOF). This paper proposes a method for the design of the receiving array of the two-dimensional hybrid MIMO phased-array radar based on the two-dimensional nested array. A signal model for the radar is given, which consists of the sparse array and the dense array. Then by constructing the Khatri-Rao product of the covariance matrix of the receiving signal, virtual extension of array elements is achieved by forming the difference co-array. Direction of arrival estimation is conducted based on spatial smoothing. Simulation results demonstrate that the proposed method can improve degrees of freedom without increase of elements, and then improve DOF estimation accuracy of the two-dimensional hybrid MIMO phased-array radar.

Key words: two-dimensional hybrid MIMO phased-array radar, two-dimensional nested array, difference co-array, Degrees of Freedom(DOF), estimation of arrival direction

CLC Number:

V243.2
TN820

LIU Shuaiqi, WANG Buhong, LI Xia, LIU Xinbo, CAO Shuai. Design of receiving array of two-dimensional nested hybrid MIMO phased-array radar[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2018, 39(4): 321546-321546.

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Design of receiving array of two-dimensional nested hybrid MIMO phased-array radar

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