A Wireless Transient Attenuated-exponential Overpressure Beamforming with for Far-field Blast Source Localization

Shang Gao, Zirui Zhang, Yan Zong, Guiyun Tian, Xuewu Dai, Yongteng Zhong, Xin Jin

Research output: Contribution to journalArticlepeer-review

Abstract

Time-domain beamforming is more suitable for blast wave transient signal than frequency-domain beamformer because wide-band spectrum of noise makes the beamforming image less clear. To avoid the gust effects and enable the location of blast source accurately, this paper proposes a new one-dimensional Far-field delay-and-sum (DAS) beamforming method with an attenuate exponential function model for wireless overpressure transient signal. In addition, we also design wireless overpressure peak and root-mean-square (RMS) directional estimators to assess the performance of the proposed new DAS beamforming method. Furthermore, the effects of the wireless pressure sensor node (WPSL) spacing, the number of WPSLs and side lobe level brought from noise on the beam width are investigated in the two estimators. The proposed formula is verified by a uniformly spaced linear sensing array, and the results verify the feasibility of the proposed method in blast source localization. This paper is conducted to provide new insight into blast source localization algorithm, and further open a door for transient blast overpressure source localization scenarios in future.

Original languageEnglish
Number of pages7
JournalIEEE Sensors Journal
Early online date3 Oct 2022
DOIs
Publication statusE-pub ahead of print - 3 Oct 2022

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