期刊
IEEE TRANSACTIONS ON SIGNAL PROCESSING
卷 65, 期 19, 页码 5225-5239出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TSP.2017.2721904
关键词
2D MIMO radar; array interpolation; direction-of-arrival estimation; tensor decomposition
资金
- Academy of Finland [299243]
- National Nature Science Foundation of China [61171180]
- fundamental Research Funds for Central Universities [HIT. MKSTISP. 2016 13, HIT. MKSTISP. 2016 26]
- Chinese scholarship [201506120127]
In this paper, we propose a two-dimensional joint transmit array interpolation and beamspace design for planar array mono-static multiple-input-multiple-output radar for direction-of-arrival (DOA) estimation via tensor modeling. Our underlying idea is to map the transmit array to a desired array and suppress the transmit power outside the spatial sector of interest. In doing so, the signal-to-noise ratio is improved at the receive array. Then, we fold the received data along each dimension into a tensorial structure and apply tensor-basedmethods to obtain DOA estimates. In addition, we derive a closed-form expression for DOA estimation bias caused by interpolation errors and argue for using a specially designed look-up table to compensate for the bias. The corresponding Cramer-Rao bound (CRB) is also derived. Simulation results are provided to show the performance of the proposed method and compare its performance to CRB.
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