基于PSD传感器的炸点三维坐标测量方法研究

Research on the Method of Three-dimensional Coordinate Measurement of Explosion Points based on PSD Sensors

摘要:

针对野外炸点空间三维坐标测量的问题，提出了基于二维PSD位置传感器的炸点位置测量方法，构建了基于二维PSD位置传感器的炸点三维坐标测量系统；基于双目视觉原理建立了炸点空间三维坐标测量数学模型；研究了被动探测系统在野外远距离下的标定技术；通过系统误差分解传递，分析了各参数的误差；在Matlab中分别绘制了炸点位置坐标三个维度的误差分布图，并分析了测量系统误差随炸点实际位置变化的分布情况。根据误差分布图得到了在理论100m测试距离下X坐标最大测量误差约为0.292 m~0.303 m，Y坐标最大测量误差约为0.251 m~0.371 m，Z坐标最大测量误差0.270 m~0.336 m。最后通过静爆实验对测量方法正确性、被动探测系统标定技术可行性和测量系统功能性进行了验证，结果表明测量系统响应速度快且功能正常，被动探测系统标定技术具备可行性且操作方便，可适用于野外炸点位置的快速测量。

Abstract:

A method for measuring the spatial three-dimensional coordinates of explosion points in the field is proposed, based on a two-dimensional PSD position sensor. A measurement system for determining the coordinates of explosion points in three dimensions using a two-dimensional PSD position sensor is constructed. Furthermore,a mathematical model for measuring the spatial 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 system error,the errors of various parameters are analyzed. Error distribution graphs of the three dimensions of the explosion point's position coordinates are plotted in Matlab, and the distribution of measurement system errors with changes in the actual location of the explosion point is analyzed. Based on the error distribution graphs,the maximum measurement error for the X-coordinate is approximately 0.292 m-0.303 m, for the Y-coordinate it is approximately 0.251 m-0.371 m,and for the Z-coordinate it is approximately 0.270 m-0.336 m at a theoretical testing distance of 100m.Finally,the correctness of the measurement method,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 results demonstrate that the measurement system has a fast response speed and good functionality,the calibration technique for the passive detection system is operationally feasible,and the method is suitable for the rapid measurement of explosion point positions in the field.