Direction-of-Arrival Estimation for 2D Coherently Distributed Sources with Nested Array Based on Matrix Reconstruction

Table 1

Maximum DOF and the coarray aperture of the optimal configuration.

N (n is an integer)	M1	M2	DOF	Coarray aperture
4n + 1	N	n	2n^2 + n	(4n^2 + 2n − 1)d × d
4n + 3	N	n +1	2n^2 + 3n + 2	(4n^2 + 6n + 1)d × d