Parameter identifiability of space-time MIMO radar

摘要

In multiple-input multiple-output (MIMO) radar, the maximum number of targets which can be uniquely identified, also known as the parameter identifiability, is one of the most basic issues. In this paper, the parameter identifiability is extended from the space-only MIMO radar to the space-time MIMO radar. According to the parameter identifiability conditions derived, the maximum number of targets which can be identified by the space-time MIMO radar is presented. Comparing with space-only MIMO radar, the parameter identifiability of space-time MIMO radar is significantly enhanced by exploiting both the spatial and temporal characteristics of the transmitted waveforms. The results are validated by several numerical examples. (C) 2019 Elsevier Inc. All rights reserved.