水中弹道测试的数据处理技术  

Data Process Techniques of Underwater Ballistics Measurements

作　　者：陶钢[1] 

机构地区：[1]南京理工大学能源与动力工程学院,江苏南京210094

出　　处：《测试技术学报》2013年第6期461-466,共6页Journal of Test and Measurement Technology

摘　　要：水中高速运动弹丸的测试不同于空气中测试,由于水中运动的弹丸的速度降很大,而且是非线性的,因此常规的区截靶测试和光电测试等方法都无法准确测试弹丸的运动轨迹及速度、加速度和转速等参数.但由于水中弹道及运动规律、水中弹丸受力和阻力系数的测量又迫切要求知道弹丸的精确运动规律,因此需要研究水中弹道参数的精确测试技术.本文介绍了一种数据处理方法,使用高速摄像测量技术和图像处理方法,利用样条拟合方法,可在亚像素精度上确定弹丸的位置等参数.该方法可以有效地解决水中弹道数据的测量问题.The parameters test of high speed moving projectiles in the water is different from that in the air, due to a great drop of projectile speed in the water and nonlinear feature, the conventional velocity measuring target and optoelectronic testing methods etc. are unable to accurately test the trajectory of the projectile movement and speed, acceleration and rotation speed parameters. However, the exploration of underwater ballistics laws and the water force characteristics on projectile urgently demand to know the exact law of motion of the projectile, and therefore the precise testing technology of ballistic parameters in water must be studied. This paper describes a method of data processing and the use of high-speed camera measurement technology and image processing method. By using the spline fitting method, the position parameters of the projectile can be determined with the sub-pixel accuracy. This method can effectively solve the measurement problem of underwater ballistics,

关 键 词：水中弹道 弹丸测试 数据处理 

分 类 号：TV131[水利工程—水力学及河流动力学]