水下航行器上方三分量磁场高精度测量技术研究

Research on high-precision measurement technology of three-component magnetic field above underwater vehicle

本文提出了一种基于“三轴磁传感器+姿态传感器”相结合的水下航行器上方三分量磁场动态补偿测量方法,分析了高精度补偿测量原理,研究建立了三轴磁传感器坐标系下磁场测量值向地理坐标系下的坐标变换矩阵,并完成了试验验证。试验结果表明,应用水下航行器上方三分量磁场动态补偿测量方法后,磁场测量值标准差降低了90%-95%,大幅提升了磁场测量系统抗抖动性能,这验证了该方法对提升水下航行器上方三分量磁场测量精度的有效性。

This paper proposes a dynamic compensation measurement method of three-component magnetic field above underwater vehicle based on the combination of"three-axis magnetic sensor+attitude sensor",analyzes the principle of high-precision compensation measurement,studies and establishes the coordinate transformation matrix of magnetic field measurement value under the coordinate system of three-axis magnetic sensor to the coordinate system of geographical coordinates,and completes the test verification.The test results show that the standard deviation of the magnetic field measurement value is reduced by 90%-95%after applying the three-component magnetic field dynamic compensation measurement method above the underwater vehicle,which greatly improves the anti-jitter performance of the magnetic field measurement system,which verifies the effectiveness of this method in improving the measurement accuracy of the three-component magnetic field above the underwater vehicle.