飞行器归算误差分析及解决方案设计

某空中拖靶为被试系统精度试验提供目标,拖靶位置测量系统的观测点与被试系统对拖靶的观测点安装在不同位置.由于该靶没有姿态测量系统,两观测点间的归算误差严重影响对被试系统的精度鉴定.首先导出了归算误差的计算方法,并对归算误差进行分析,然后根据该飞行器特点,提出归算误差解决方案.计算表明,该方案不增加靶上设备,易于实现,大大降低了归算误差,可满足被试系统精度鉴定要求.

Analysis of reductive-calculation error of aerocraft and the solution

A certain towing-target in air provides an object for accuracy examination to the examined system.The observation spot of the towing-target position measurement system is installed in different position from that of the examined system to target.Since the target has no attitude measurement system,so the reductive-calculation error between the two spots affects the accuracy of the examined system seriously.This article deduces and analyses the calculational method of reductive-calculation error firstly,and then puts forward a scheme to settle it according to features of the aerocraft.The calculation indicates that this scheme is easy to be achieved without increasing devices on the target,greatly reduces the reductive-calculation error,and can satisfy the request of accuracy examination to the examined system.