磁罗盘误差分析及补偿

磁罗盘已被广泛地应用在民用及军事领域,误差补偿是磁罗盘研究中的一个关键技术.在分析磁罗盘误差的基础上,主要针对对磁罗盘影响最大同时最难控制的磁罗差,提出了一种基于BP网络的补偿方法,并建立以测量航向角为输入、补偿后航向角为输出的三层BP网络模型.实验证明,用该方法可以较好地补偿磁罗差且补偿后航向误差均方差仅为0.392 55.

Analyze and Compensate Errors of Magnetic Compass

Magnetic Compass can be widely used in civilian and military fields, the key technology of magnetic compass is error compensation. This paper analyses errors of magnetic compass firstly, and then,presents a new compensation algorithm based on BP network which is utilized to compensate magnetic deviation mostly. Further, a three layers BP network which input is measured heading and output is compen-sated heading is set up. The result shows this compensation algorithm can compensate magnetic deviation preferably and the mean variance of heading error is only 0. 392 55 after compensation.