磁羅盤的羅差分析與驗證

【摘要】針對基于最佳橢圓擬合的磁羅盤誤差補(bǔ)償算法，設(shè)計了一組模擬不同類型干擾磁場的數(shù)據(jù)采集與羅差分析實驗。通過對磁羅盤在各種干擾磁場下表征測量數(shù)據(jù)特性的擬合橢圓參數(shù)與最終補(bǔ)償效果的詳細(xì)分析，對理論公式進(jìn)行了比照與補(bǔ)充，同時探討了軟鐵干擾磁場與硬鐵干擾磁場的相互作用關(guān)系以及在綜合磁航向誤差中各自所產(chǎn)生的影響。
關(guān) 鍵 詞 磁羅盤; 羅差; 最佳橢圓擬合; 誤差補(bǔ)償

In this paper, a set of data collection and magnetic deviation analysis experiments which can simulate different magnetic disturbances are designed based on ellipse-specific fitting error compensation method. Under the condition of diverse magnetic disturbances, ellipse parameter which depict measured data characteristic and the last compensation effect are analyzed in detail. Theoretics expressions are compared and complemented with experiment results. At the same time, the interaction of soft iron and hard iron distortion and the role of each in the whole magnetic heading error are discussed.