Detection sensitivity correction calculation model and application of photoelectric detection target in four-screen intersection testing system

Li, Hanshan; Zhang, Xiaoqian; Zhang, Xuewei; Lü, Liping

doi:10.1016/j.measurement.2021.109281

Cited by 9 publications

(2 citation statements)

References 13 publications

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“…The Light-Screen (LS) is a virtual plane that produces an analog signal while a projectile going through. Although the FLS can in principle complete the measurement of the coordinates of projectiles [10,11], the coordinates measurement of oblique incidence projectile by the FLS is currently difficult to perform. The Six-Light-Screen (SLS) is capable of measuring coordinates of the oblique incidence of projectiles [12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Coordinates measurement method under oblique incidence based on four-light-screen

Duan,

Ni,

2024

Speckle 2023: VIII International Conference on Speckle Metrology

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The Four-Light-Screen is often adopted for fire dispersion measurement of small arms. Due to gravitational acceleration and the muzzle vibration are always present, leading to projectile's velocity vector no-perpendicular to the target plane of the Four-Light-Screen, which is called the oblique incidence accordingly. The oblique incidence is violated the measurable conditions of the Four-Light-Screen measurement principle. Under the muzzle position measured in advance, the muzzle position after vibration is replaced to it. The connection between the muzzle and the coordinates measured by the Four-Light-Screen is approximated as the actual trajectory. Coordinates of oblique incidence projectiles measurement methods are proposed according to establishing the equation system between the actual trajectory equation and the four detection Light-Screen plane equations of the Four-Light-Screen. Both simulation and experimental results show that the proposed methods can measure coordinates of oblique incidence projectiles. The analysis and proposed coordinates measurement methods of oblique incidence bring much to the application of external ballistic parameters measurement of small arms.

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Section: Introductionmentioning

confidence: 99%

Coordinates measurement method under oblique incidence based on four-light-screen

Duan,

Ni,

2024

Speckle 2023: VIII International Conference on Speckle Metrology

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“…Aiming at the multiple parameter test of the projectile in the variable curve trajectory state of the terminal trajectory flight process, the multiple parameter calculation model of the nonlinear flying projectile is established by using the seven detection screen intersection test system, 4 and so forth. In order to improve the detection performance of the photoelectric detection target, reference [5, 6] proposed to introduce the multiple array photoelectric detectors into the photoelectric detection target, which can widen the detection field of view of the system. However, due to the detection blind area between the photoelectric detectors, the detection ability of the whole detection screen is inconsistent.…”

Section: Introductionmentioning

confidence: 99%

Design and analysis of laser photoelectric detection sensor

Zhang

2021

Micro & Optical Tech Letters

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In order to solve the problem of unstable detection and low detection ability of traditional photoelectric detection target in complex environment, a design method of laser photoelectric detection sensor is proposed. Laser photoelectric detection sensor with active and passive laser detection screen is formed by adding line laser to the traditional photoelectric detection target. According to the characteristics of laser echo energy when the projectile passing through the laser detection screen, the calculation model of the laser echo power received by the photoelectric detector under the random intersection of projectile and target is established, and the signal‐to‐noise ratio calculation function of the system is derived. Through the comparative test, the results show that the detection ability of the laser photoelectric detection sensor is obviously better than that of the traditional photoelectric detection target, especially in the low illumination environment; moreover, the signal‐to‐noise ratio of the laser photoelectric detection sensor still follows the law of decreasing with the increase of detection distance, and it keeps the detection characteristics of photoelectric detection system. By increasing the laser emission power, the signal‐to‐noise ratio of the laser photoelectric detection sensor is improved to a certain extent, and the detection ability of the system is improved. The results verify that the design method and theoretical model of photoelectric detection sensor proposed in this paper are scientific and feasible.

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Recognition model and algorithm of projectiles by combining particle swarm optimization support vector and spatial-temporal constrain

2023

Defence Technology

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Detection sensitivity correction calculation model and application of photoelectric detection target in four-screen intersection testing system

Cited by 9 publications

References 13 publications

Coordinates measurement method under oblique incidence based on four-light-screen

Coordinates measurement method under oblique incidence based on four-light-screen

Design and analysis of laser photoelectric detection sensor

Recognition model and algorithm of projectiles by combining particle swarm optimization support vector and spatial-temporal constrain

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