3-d motion imaging in a multipath coordinate space based on a TDM-MIMO radar sensor

Yi Zhang, Chengkai Zhu, Shuqin Dong, Zhitao Gu, Marcel Balle, Bin Zhang, Changzhi Li, Lixin Ran

Research output: Contribution to journalArticlepeer-review

2 Scopus citations


To date, 3-D radar imaging of moving objects in a multipath coordinate space close to antennas remains a technical challenge. In this work, we demonstrate the implementation of such 3-D motion imaging based on a continuous-wave, multipleinput multiple-output (MIMO) Doppler radar sensor (DRS). Working with a time-division-multiplex (TDM) scheme, this portable, cost-effective DRS is a bistatic system with one transmitting and one receiving channels, and a radio frequency (RF) switch in each channel toggling between two antennas. Assisted by algorithms specifically derived for the TDM-MIMO architecture, highly sensitive 3-D imaging performed in a multipath indoor environment was experimentally implemented. Numerical simulations and experimental demonstrations verified the effectiveness and accuracy of the proposed approach.

Original languageEnglish
Article number9210603
Pages (from-to)4642-4651
Number of pages10
JournalIEEE Transactions on Microwave Theory and Techniques
Issue number11
StatePublished - Nov 2020


  • Doppler radar
  • Microwave imaging
  • Multipleinput multiple-output (MIMO)
  • Radar imaging
  • Time division multiplex (TDM)


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