Research on 3D Coordinate Measurement Method of Explosion Points based on PSD Sensors
Aimed at the spatial 3D coordinate measurement of explosion points,anA explosion point measurement method for measuring the spatial three-dimensional coordinates of explosion points in the field is proposed,based on 2D a two-dimensional posi-tion sensitive detector(PSD)position sensor is proposed.An explosion-point 3D A measurement system based on 2D PSD position sensor is constructed for determining the coordinates of explosion points in three dimensions using a two-dimensional PSD position sen-sor is constructed..Furthermore,a mathematical model for measuring the spatial 3D three-dimensional coordinates of explosion points is established based on binocular vision principles.Calibration techniques for long-range passive detection systems in the field are studied.By decomposing and transferring The system error is decomposed and transferred to analyzesystem error the errors of va-rious parameters are analyzed,plot the.3D error Error distribution graphs of the three dimensions of the explosion point's position coordinates are plotted in Matlab,and analyze the distribution of measurement system errors with changes in the actual location of the explosion point positions is analyzed.Based on the error distribution graphs,the maximum measurement error for the X-coordinate is approximately from 0.292 m to 0.303 m,for the Y-coordinate it is approximately from 0.251 m to 0.371 m,and for the Z-coordinate it is approximately from 0.270 m to 0.336 m,with at a theoretical testing distance of 100 m.Finally,the static explosion experiments verify the correctness of the measurement method,the calibration technique the feasibility of the calibration technique for the passive detection system,and the functionality of the measurement system are validated through static explosion experiments.The experi-mental results demonstrateshow that the measurement system has a fast response speed and good function,ality,the calibration tech-nique for the passive detection system is operationally feasible,and the method is suitable for the rapid measurement of explosion point positionss in the field.
PSDexplosion point location measurementbinocular vision principlepassive detection calibrationerror analysis