小型三轴数字罗盘测量误差分析

小型三轴数字罗盘能输出当前载体的航向角、俯仰角、横摇角,由于其体积小、精度高、使用方便而在三轴测量中越来越得到广泛使用。文中给出了一种分析小型三轴数字罗盘构成的三轴测量系统的工作原理的新方法,并推导出了测量系统中各相关量之间一系列计算关系式,在此基础上对影响三轴测量精度的因素进行了综合分析,提出了减少误差的方法,并辅于测量数据给予说明。

Measurement Error Analysis of a Minitype 3-axis Digital Compass

A minitype 3 axis digital compass can output the heading angle, pitching angle and rolling angle about the present object. It is used more and more widely due to its small dimension ,high precision and convenience in use. In this paper, first, we propose a new method to analyze the operation principle of the measuring system based on the minitype 3 axis digital compass; second, we deduce some calculation formulae of the relationship between variables in the measuring system, then we analyze the factors which have impact on the system 3 axis measuring precision, finally we suggest a method to reduce the system error and explain it by some measuring data. [