Estimation Method for Instantaneous Frequency of Echo Signal of Projectile in Bore

WANG Jian;HAN Yan;WANG Li-ming;ZHANG Pi-zhuang;CHEN Ping

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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 ›› 2017, Vol. 38 ›› Issue (9) : 1806-1814. DOI: 10.3969/j.issn.1000-1093.2017.09.018
Paper

Estimation Method for Instantaneous Frequency of Echo Signal of Projectile in Bore

  • WANG Jian1,2, HAN Yan1,2, WANG Li-ming1,2, ZHANG Pi-zhuang1,2, CHEN Ping1,2
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Abstract

The microwave interferometer can obtain the Doppler echo signal containing interior ballistic motion information. In order to estimate the instantaneous frequency of echo signal effectively, a mathematical model of motion curve of projectile in bore is established based on polynomial fitting. The methodsof short-time Fourier transform, Wigner-Ville distribution, polynomial chirplet transform (PCT) are used to analyze the simulation echo signals of projectiles with different noise and experimental echo signals of projectiles, respectively. The results show that the PCT method which uses transform kernel based on polynomial frequency modulated wavelet has the best time-frequency concentration and accuracy of instantaneous frequency estimation (IFE) and good anti-interference ability compared with the other methods.The research results show that the PCT method is suitable for IFE of projectile's signals. Key

Key words

ordnancescienceandtechnology / instantaneousfrequencyestimation / projectilemotion / microwaveinterferometer / time-frequencydistribution

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WANG Jian, HAN Yan, WANG Li-ming, ZHANG Pi-zhuang, CHEN Ping. Estimation Method for Instantaneous Frequency of Echo Signal of Projectile in Bore. Acta Armamentarii. 2017, 38(9): 1806-1814 https://doi.org/10.3969/j.issn.1000-1093.2017.09.018

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第38卷
第9期2017年9月兵工学报ACTA
ARMAMENTARIIVol.38No.9Sep.2017

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