步枪立姿的稳定性研究

A Study of Shooters′Stability in Performance

本文采用红外光点记录系统和三维测力台联机同步测试方法,获得我国步枪优秀选手和初级运动员立射时的枪口空间位移、枪支与靶面的空间角位移、压力中心点位置等指标的数据。发现枪支在沿射击目标方向上晃动等特点,分析获得不同水平运动员立射时的力学稳定性。测试研究与比赛成绩对照表明,这种研究在一定程度上可以预测运动员在近期比赛中能否发挥正常水平。

Using the synchromeasure method by means of a SELSPOT 11 SYSTEM and a Kistler force platform, Chi-nese rifle shooters of both high and low grades were tested while performing in the standing posituon. Data con-cerning the space angle variables in firing, centres of pressure and three-dimensional displacements of themuzzle were collected. It was found that rifles were displaced in the direction of the target. The degrees of me-chanical stability attained by shooters of different grades were also analysed. Comparisons between the results ofthe tests and those in competitions indicated that this kind of measurement can be used to predict a shooter'sperformance in an upcoming tournament.