基于摄像法测量弹丸的空间炸点位置  

Measurement of space burst location for projectile base on photography

作　　者：李翰山[1] 雷志勇[1] 

机构地区：[1]西安工业大学电子信息工程学院,陕西西安710032

出　　处：《光学精密工程》2012年第2期329-336,共8页Optics and Precision Engineering

基　　金：国家自然科学基金资助项目(No.61107079);陕西省教育厅专项基金资助项目(No.2010JK605)

摘　　要：为了测量了近炸引信对空中目标引炸的炸点位置,提出了采用基于定目标为参照的双面阵相机交汇摄像法来获取高空弹丸炸点三维坐标参数。根据试验测试要求,分析了相机交汇摄像原理与方法,建立了弹丸炸点三维坐标位置计算模型;利用交汇相机的空间几何关系、图像处理技术与模拟目标实际尺寸,研究弹丸炸点相对模拟目标的空间三维坐标算法,并分析了坐标参数修正方法;利用微分法对参数进行误差分析。分析计算显示,坐标误差均小于40mm;实弹试验和图像处理显示,相机交汇摄像法可以获得弹丸炸点三维坐标。对四光幕法与摄像法的对比表明,两种方法在高低方向所测数值平均差为0.158m,左右方向数值平均差为0.114m。To measure the location parameters for projectile burst on a proximity fuze in high altitude,an intersection imaging method by using two planar array cameras and taking a simulant object as reference was put forward to calculate three coordinate parameters of projectile burst location.According to the request of proximity fuze test,the principle and method of camera intersection imaging were analyzed,and the measuring model of projectile burst location was set up.The relations of space geometric locations of the camera layouts,the technology of image processing and the sizes of objects were analyzed,the spatial three coordination of projectile burst location were calculated,and the parameter modification method was studied.A differential method was employed in analyzing the location errors,and results show that the differential coordinate errors are less than 40mm.Experiments and image processing were performed,which shows that the planar array camera intersection imaging can obtain the spatial three coordination of projectile burst.Furthermore,the data by proposed method are compared with that of the four screen across system,and their average error is 0.158min the high and low directions and 0.114min right and left directions.

关 键 词：交汇摄像法 面阵相机 弹丸 近炸引信 炸点位置 

分 类 号：TJ430.6[兵器科学与技术—火炮、自动武器与弹药工程] TB872[一般工业技术—摄影技术]