基于遗传算法的数字罗盘误差补偿方法研究

提高地磁导航精度的关键在于地磁罗盘的误差补偿,本文通过分析数字罗盘误差产生的原因,提出一种基于遗传算法的误差补偿方法,通过遗传算法的交叉、变异、选择等过程,对罗盘误差补偿参数进行优化,算法克服了传统方法的局部最优问题,达到一种全局最优化.实验结果表明:该算法可以有效修正环境磁场误差,将平均误差由补偿前的10.81°降低到0.53°,补偿后的罗盘可以为地磁导航提供更为精确的航向信息.

An Error Compensation Method for Digital Compass based on Genetic Algorithms

Error compensation of digital compass is the key issues for accuracy improvement of the magnetic navigation.By analysing the error mechanism,a novel method has been proposed for correcting the errors through the Genetic Algorithm.The compensatory parameters are obtained from the progress of crossing,mutating and choosing in the Genetic Algorithm.The Genetic Algorithm can solve the local optimum problems and achieve the global optimum solution The experimental results show that the Genetic Algorithm is effective for the environmental magnetic field error correction.After compensation,the digital compass can provide precise direction information for magnetic navigation with the average error reduced from 10.81° to 0.53°.