An algorithm for joint estimation of angle and gain-phase error for bistatic MIMO radar is presented.Array manifolds associated with transmit and receive arrays in the presence of gain-phase errors can be obtained by tri-iterative least-square method.According to the orthogonality of the signal- and noise-subspace

the direction-of-arrivals (DOAs) and direction-of-departures(DODs) of targets are estimated by exploiting MUSIC-like algorithm without any priori knowledge of gain-phase error

and automatically paired.Based on the unique features of array aperture extension

the gain-phase errors are calculated by utilizing the data of the first transmit sensor and the first receive sensor respectively.Compared with the algorithm available

the bearing estimation precision is independent of the gain-phase errors.The gain-phase errors can be solved in closed-form.Performance simulations demonstrate the tolerance limit of the method proposed

as well as its effectiveness and superiority.