数字电子罗盘误差分析及校正技术研究

A Study on the Error Analysis and Calibration Technique of Digital Compass

分析了硬铁干扰和软铁干扰等影响数字电子罗盘精度的因素,结合工程应用情况,研究了复杂应用模式下电子罗盘的误差校正技术,提出了在复杂应用模式下的误差校正措施和经验公式。给出的误差补偿算法,大大提高了复杂应用模式下电子罗盘的定向精度,校正结果在工程实践中得到验证。

In this paper, the author analyzes the main factors, especially hard iron interference and soft iron interference, which influence the digital compass′s heading precision. Taking account of engineering applications, the calibration technique of digital compass is studied for complex application modes. A new method and empirical formulare were obtained for error compensation. The digital compass′s heading precision is greatly improved by using the new algorithm. The result is verified in engineering practices.