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Multiple feature time extraction and match recognition of projectile in velocity measurement system based on dual active photoelectric detection sensors

XIAOQIAN ZHANG1, HANSHAN LI1,*

Affiliation

  1. School of Electronic and Information Engineering, Xi’an Technological University, Xi’an, 710021, China

Abstract

The external factors influence the performance of the active photoelectric detection sensor (APDS) to recognize the real projectile signal and reduce the velocity measurement accuracy of the system. Based on detection mechanism of APDS, the calculation model of the laser reflection energy of the projectile’s surface is established and the output signal voltage function of APDS is deduced; The time extraction method of projectile signal based on wavelet transform modulus maximum is developed, the double constraint model composed of the same projectile time matching criterion and the correlation coefficient of double parallel laser detection screens are formed. The experiments are carried out in different interference environments, the test results show that the time extraction method proposed in this paper can obtain accurate test data. Moreover, when multiple projectiles are continuously fired, combined with the double constraint model, the time information of the same projectile passing through the two laser detection screens can be matched and the velocity of each projectile can be accurately obtained, which can effectively reduce the influence of external factors on the velocity measurement system based on dual APDSs.

Keywords

Active photoelectric detection sensor, Projectile, Laser, Wavelet transform, Time extraction and match recognition.

Citation

XIAOQIAN ZHANG, HANSHAN LI, Multiple feature time extraction and match recognition of projectile in velocity measurement system based on dual active photoelectric detection sensors, Optoelectronics and Advanced Materials - Rapid Communications, 16, 11-12, November-December 2022, pp.509-517 (2022).

Submitted at: Aug. 10, 2022

Accepted at: Dec. 5, 2022