无航向基准条件下电子罗盘的误差补偿方法研究

Error Compensation Research for Electronic Compass with Non-Heading Reference

针对HMR3300电子罗盘在实际使用时,航向角测量精度低问题,探讨有效的磁差补偿方法。在分析电子罗盘航向角测量误差产生机理的基础上,建立了无航向基准条件下电子罗盘的误差校正模型,推导了自差补偿系数的计算公式,实验结果表明该补偿方法是正确有效的,可将HMR3300的航向角测量误差控制在0.5°之内。

In view of the problem that the low heading angle measurement precision of HMR3300 in the practical use, a valid magnetic error compensation method for electronic compass is proposed. Based on analyzing the cause mechanism of heading angle error, and then the error correction model under the condition of non-heading reference was established, the autodyne compensation coefficient formula was inferred. The experimental result shows that the compensating process is correct and effective, the maximum heading error of HMR3300 drops to 0.5°.