Affiliation:
1. School of Optoelectronic Engineering, Xi’an Technological University, No. 2 Xue-Fu Middle Road, Weiyang District, Xi’an 710021, China
2. School of Defence Science and Technology, Xi’an Technological University, No. 2 Xue-Fu Middle Road, Weiyang District, Xi’an 710021, China
Abstract
This article proposes a measurement method using a multi-dimensional LED detection array, which can be used to obtain the flight parameters (i.e., impact coordinates, flight velocity, and incident angle) of a small flying object. Firstly, the composition of the proposed system and its detection principle are described in detail. Then, a calculation model is derived according to the geometrical relationship between the different LED detection arrays, which can calculate the above flight parameters. Furthermore, numerical simulations are performed to analyze the change trend in the measurement error of the proposed system, and it can be verified that its measurement performance meets the related requirements in theory. Finally, we use the proposed system and a high-speed camera system to carry out comparison experiments with two different reference velocities of 900 m/s and 700 m/s, and the results show that the maximum deviation in the measured absolute velocity is always less than 1 m/s and that the maximum deviations of the measured coordinates of x and y are not more than 2 mm within the effective measurement range. Therefore, the proposed measurement method is feasible and effective, and it can also meet the requirements of the measurement system.
Funder
Natural Science Basic Research Plan in Shaanxi Province of China
Young Scientists Fund of the National Natural Science Foundation of China
Subject
Radiology, Nuclear Medicine and imaging,Instrumentation,Atomic and Molecular Physics, and Optics
Reference20 articles.
1. Space Debris Protection Design and Assessment for Thermal Control Radiator of Spacecraft;Han;Spacecr. Eng.,2023
2. Hail Impact Responses and Residual Tensile Properties of CFRP T-joints;Zhou;Chin. J. Aeronaut.,2023
3. Ni, J.P. (2014). Technology and Application of Measurement of the Light Screen Array, National Defense Industry Press.
4. Research Progress of Aluminum Projectile Hypervelocity Impact Protection Structure;Li;Chin. J. High Press. Phys.,2019
5. Flight Parameter Calculation Method of Multi-projectiles Using Temporal and Spatial Information Constraint;Li;Def. Technol.,2023