Abstract: Based on the MIMO model which has multiple spatially separated transmitters and co-located separated receivers, the moving angle and velocity are estimated by the relation between velocity vectors of a target for all transmitter-receiver pairs. Based on this estimation, the radial velocity toward the receiver is obtained by projecting the moving velocity vector onto the looking direction from receiver to target and its performance formula is achieved. Theoretical analysis and simulation results show that velocity estimation for the MIMO radar is related to the angle between the vectors from the target to the receiver and transmitters, and the greater this angle, the smaller the estimation error.

Key words: MIMO radar, Doppler shifts, velocity estimation