Joint Time-Space Resource Allocation and Waveform Selection for the Collocated MIMO Radar in Multiple Targets Tracking

Compared with conventional phased array radar, the collocated multiple input multiple output (MIMO) radar can effectively control the transmitting beam width by means of sub-array division. Therefore, different targets may be illuminated simultaneously with one beam in the collocated MIMO radar, providing greater freedom degree in resource management. The joint time-space resource allocation and waveform selection optimization model for the collocated MIMO radar is proposed in this paper, where the objective function that takes both the system resource and tracking precision into consideration is minimized under the guarantee of effective targets detection. Through solving the proposed optimization model, the corresponding joint optimization algorithm is obtained. The optimal sampling period, sub-array number, illuminated targets set, transmitting energy and transmitting waveform parameters combination is chosen adaptively, where the former four realize the time-space resource allocation and the last one realizes the waveform selection. Simulation results demonstrate that the proposed algorithm can reduce objective function compared with fixed corresponding parameter algorithms by controlling the working parameters of the collocated MIMO radar effectively.