Focus on the issue that it is impossible for the traditional uniform array to achieve the unambiguous direction finding in a wide angular range under the wideband condition, an approach for wideband electronic intelligence (ELINT) array optimized design and two dimensional direction of arrival (DOA) estimation is proposed. Firstly, the double parallel co-prime array is designed by vertical extension on the parallel coprime array. Then, two uniform virtual arrays are developed respectively, and the cosine components of the direction of arrival are estimated. Finally, the ambiguity resolution algorithm is applied to obtain the unambiguous cosine components, and the unambiguous angles of the multiple emitters are achieved with high accuracy. Compared with traditional algorithms, the proposed method can get the direction finding of multiple sources without ambiguity and the operation of direction pairing. The validity of the proposed method is verified by the simulation results.