Three multi-channel ultra wideband (UWB) radar structures that can detect and locate single human target is proposed. The target three-dimensional localization mathematical models of different antenna arrays are constructed. The feasibility and the accuracy of these systems are verified by computer simulation. The impact factors, such as the distance between transmit and receive antenna, the number of data's effective digits, and so on, are discussed. The results and conclusion in this paper

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... serve as reference for the research and development of target threedimensional localization life detection radar in the future.