Patent ID: 11879986
Assignee: ZHEJIANG UNIVERSITY
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 1:
2. The three-dimensional co-prime cubic array direction-of-arrival estimation method based on a cross-correlation tensor according to claim 1, wherein the structure of the three-dimensional co-prime cubic array in step (1) is described as: a pair of three-dimensional sparse and uniform cubic subarrays  and  are constructed in a rectangular coordinate system, wherein  comprises ×× antenna array elements, with array element spacings in the directions of the x axis, they axis and the z axis being d, d and d respectively, with locations in the rectangular coordinate system being {(dm1x,dm1y,dm1z), m1x=0,1, . . . , −1, m1y=0,1, . . . , −1, m1z−0,1, . . . , −1};  comprises ×× antenna array elements, with array element spacings in the directions of the x axis, the y axis and the z axis being d, d and d respectively, with locations in the rectangular coordinate system being {(dm2x,dm2y,dm2z), m2x=0,1, . . . , −1, m2y=0,1, . . . , −1, m2z=0,1, . . . , −1}; a unit spacing d has a value half of an incident narrowband signal wavelength) λ, i.e., d=λ/2; subarray combination is carried out on the  and  in such a way that array elements on the (0, 0, 0) location in the rectangular coordinate system are overlapped so as to obtain a three-dimensional co-prime cubic array actually containing +−1 physical antenna array elements.