MIMO radar obtains spatial diversity by distributed sensors, which are difficult for the estimation by DOA. In this paper, the transmit elements are widely separated with the receiving elements closely spaced. By transmitting orthogonal signals, virtual subarrays are designed through filters, and the Subarrays Selection(SAS) algorithm is proposed. The algorithm obtains spatial diversity as well as robust super-resolution direction-of-arrival estimation. The proposed algorithm is extended in 2-D location of MIMO, then it obtains spatial diversity as well as increased freedoms. Finally the simulated results show that the SAS algorithm is effective.