Impact Point Positioning Method Based on the Objective Function without Velocity Parameter

LI Zhiming;FAN Jinbiao

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  • Sponsored by: China Association for Science and Technology (CAST)

    Editor-In-Chief: Xu Yida

    ISSN 1000-1093

    　

  • Hosted By: China Ordnance Society

    Published By: Acta Armamentarii

    CN 11-2176/TJ

Acta Armamentarii, a Chinese monthly journal, was first published in 1979. The journal is supervised by China Association for Science and Technology, sponsored by China Ordnance Society，and edited and published by Editorial Board of Acta Armamentarii. The Journal is included in all important domestic databases，and also collected by Engineering Index (EI, USA), Chemical Abstracts (CA, USA), Science Abstracts (SA, UK）, Abstract Journal (AJ, Russia), and Current Bibliography on Science and Technology(CBST).Acta Armamentarii has been selected into the journal Of Ordnance Science and Technology (Weapons Industry) Field Of High Quality Scientific and Technological Periodical Classification Catalogue (2022 edition), ranking T1, and the journal of Automotive Engineering Field of High Quality Scientific and technological Periodical classification Catalogue, ranking T2.
Acta Armamentarii ›› 2021, Vol. 42 ›› Issue (4) : 871-877. DOI: 10.3969/j.issn.1000-1093.2021.04.021
Paper

Impact Point Positioning Method Based on the Objective Function without Velocity Parameter

  • LI Zhiming, FAN Jinbiao
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Abstract

In most of the existing impact point positioning methods based on seismic wave, the velocity of seismic wave needs to be inversed or measured in advance, which causes a large positioning error. An impact point positioning method based on objective function is proposed. The unknown parameters of objective function are only the coordinates of the impact point, so there is no need to measure the wave velocity in advance or inverse the wave velocity. The simplex method is used to optimize the objective function, and the density-based spatial clustering of applications with noise (DBSCAN) algorithm is used to locate the impact point.The method can effectively suppress the positioning error caused by uneven wave velocity. A simulation model is esatablished to verify the feasibility of the positioning algorithm. When the positioning method is applied to the ground static explosion experiment and the data obtained by the geophone is used to locate the explosion center, the relative positioning error is 0.38%, which proves the correctness of the positioning method.

Key words

impactpointpositioning / varianceofwavevelocity / simplexmethod / density-basedspatialclusteringofapplicationswithnoisealgorithm

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LI Zhiming, FAN Jinbiao. Impact Point Positioning Method Based on the Objective Function without Velocity Parameter. Acta Armamentarii. 2021, 42(4): 871-877 https://doi.org/10.3969/j.issn.1000-1093.2021.04.021

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