外弹道参数天幕立靶测量误差分析

Error Analysis of Measuring Co-ordinates of Shots with Sky Screen in Ballistic Trajectory

为了分析外弹道参数天幕立靶的测量误差,评价测量参数的精确性,结合天幕立靶的测试原理和天幕结构,研究了误差产生的因素和误差传递关系,根据试验中测得的弹道参数对天幕立靶的测量误差进行了分析,从理论上计算了五个测量参数的误差范围。通过实弹试验,对天幕立靶测得的弹丸倾角、偏角以及着靶坐标与纸靶测得的参数进行了对比,对测得的速度参数进行了对比,数据基本吻合,天幕立靶测得的数据误差均在所分析的误差范围内。试验证明,天幕立靶是一种精度高,稳定可靠的测试仪器。

In order to analyze the error of the measuring co-ordinates of shots with sky screen in ballistic trajectory and evaluate the accuracy of survey parameter, the creating factor and transitive relationship of parameter error were studied according to the sky screen structure and principle of measuring co-ordinates of shots with sky screen. Moreover, the parameter error of measuring co-ordinates of shots with sky screen was analyzed based on the parameter of experiment, and the error scope of the five measuring parameters was calculated in theory. Through the fire experiment, the target pitch angle, azimuth, and coordinates of measuring system are basically the same to the paper target, the velocity is the same to the other testing instrument, and the error is in the scope of analysis. The experiment proves that, the measuring co-ordinates of shots with sky screen in ballistic trajectory are high precision and stable reliable measuring instruments.