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分析直升机悬挂磁测吊舱反潜平台磁干扰产生机理,研究了直升机载体磁性和磁测吊舱轨迹计算方法,建立了平台背景磁干扰磁偶极子阵列模型,并给出了模型求解方法.通过实例计算和分析表明:所建模型产生的平台背景磁干扰数据在不同航向上随飞机不同机动而变化的规律与实际相符,证明该模型是正确可行的;另外,采用逐步回归法求解模型参数,效果要好于最小二乘法和奇异值分解法.对于固定型号的飞机平台,得到一组准确的背景磁干扰模型参数,进而掌握了该平台背景磁干扰特征,为下一步平台背景磁干扰补偿提供充分的数据支撑.
The mechanism of magnetic interference of anti-submarine platform in helicopter suspended magnetic measurement pod is analyzed. The calculation method of helicopter carrier magnetism and magnetic measurement pod trajectory is studied. The magnetic interference magnetic dipole array model of platform background is established and the model solution method is given. The calculation and analysis of the examples show that the magnetic interference data of the platform background generated by the model are in good agreement with the actual behavior of different aircraft maneuvers in different headings, which proves that the model is correct and feasible. In addition, the stepwise regression method is used to solve the model parameters, The effect is better than the least squares method and the singular value decomposition method.For a fixed model aircraft platform, a set of accurate background magnetic interference model parameters are obtained, and then the background magnetic interference characteristics of the platform are mastered to provide sufficient background magnetic compensation for the platform Data support.