@inproceedings{b4f46680ec144ec1bfa7a10ef89c5e64,
title = "On Range-dimensional Performance Improvement of FD-MIMO Sonar Using Deconvolution",
abstract = "The frequency diverse multiple-input multiple-output (FD-MIMO) sonar can achieve improved detection performance in the range dimension by synthesizing echoes at different frequency bands without over-demanding system bandwidth. However, the existing bandwidth synthesis (BS) method suffers from high-level range sidelobes caused by the spectral leakage of the subband signals and the discontinuity of the synthesized spectrum. Hence, it is hard to detect a weak target in the range dimension. To address this problem, a deconvolved bandwidth synthesis (DBS) method is proposed, which can suppress the range-dimensional sidelobes by post-processing the beam output of the synthesized spectrum. To be specific, we first employ the narrowband frequency diverse linear frequency modulated (FD-LFM) pulses to construct the range-dimensional point spread function (PSF), and then apply the PSF and the Richardson-Lucy (R-L) algorithm to deconvolve the data obtained by synthesizing spectra of the subband signals. Simulation results indicate that for the FD-MIMO sonar the proposed DBS method shows a better interference rejection ability and a higher range resolution in the range dimension than the BS method.",
keywords = "deconvolution, FD-MIMO sonar, R-L algorithm, range dimension, synthesized spectrum",
author = "Jingrong Wu and Xionghou Liu and Chao Sun and Guangyu Jiang and Dezhi Kong and Kuan Fan",
note = "Publisher Copyright: {\textcopyright} 2020 IEEE.; 2020 Global Oceans: Singapore - U.S. Gulf Coast, OCEANS 2020 ; Conference date: 05-10-2020 Through 30-10-2020",
year = "2020",
month = oct,
day = "5",
doi = "10.1109/IEEECONF38699.2020.9389292",
language = "英语",
series = "2020 Global Oceans 2020: Singapore - U.S. Gulf Coast",
publisher = "Institute of Electrical and Electronics Engineers Inc.",
booktitle = "2020 Global Oceans 2020",
}