Open AccessDOA estimation method for multi‐path targets based on TR MIMO radar
Author(s) -
Liu Mengbo,
Hu Guoping,
Shi Junpeng,
Zhou Hao
Publication year - 2019
Publication title -
the journal of engineering
Language(s) - English
Resource type - Journals
ISSN - 2051-3305
DOI - 10.1049/joe.2018.5134
Subject(s) - computer science , algorithm , multipath propagation , smoothing , mimo , radar , direction of arrival , waveform , electronic engineering , telecommunications , engineering , computer vision , beamforming , channel (broadcasting) , antenna (radio)
To reduce the large errors for direction of arrival (DOA) estimation in the multipath condition, a DOA estimation method for multipath targets based on time reversal (TR) multi‐input multi‐output (MIMO) radar is proposed. First, the proposed algorithm combines the focusing characteristic of TR technology with the waveform diversity and symmetry characteristic of MIMO radar, obtaining the virtual sub‐arrays of echo signal. Then, the authors multiplex the rows and columns and apply forward–backward spatial smoothing algorithm to remove the coherence of the virtual sub‐arrays, effectively improving the DOA estimation accuracy for multipath targets. Simulation results verify the validity of the proposed method.