Abstract:

A new algorithm for multi-angle estimation in bistatic MIMO radar with an L-shaped array is presented. According to the characteristics of received signals, different cost functions are constructed. The transmitting and receiving array matrices are obtained using an iterative least square algorithm. Using a structure of L-shaped array and the least square method, the 2D-DOA and 2D-DOD of multi-target involved in the receiving array from the target to the transmitter and receiver can be estimated based on the decomposed matrices. The method does not need to search spectral peaks or pair parameters. In comparison with the ESPRIT method, the proposed algorithm has high precision in the parameter estimation, which is close to the
Cramer-Rao bound. It can works well in small sizes. Simulation results verify its effectiveness.

Key words: iterative least square algorithm, multidimensional angle estimation, bistatic MIMO radar, L-shaped array