Aiming at the problem of attitude test of special aircraft in flight, the combined test technology of geomagnetic sensor and angular velocity sensor is studied. The mathematical model of special aircraft roll attitude test based on combined measurement is established. The error models of special aircraft roll angle based on yaw angle input and pitch angle input are derived, respectively, and based on the actual flight trajectory data of aircraft, the mathematical model of special aircraft roll attitude test is established The simulation results show that the roll angle error input by yaw angle is between -0.4° and 0.9°, while the roll angle error input by pitch angle is between -0.4° and 1.2°, which shows that the calculation accuracy of roll angle input by yaw angle is higher, and the existence of magnetic measurement blind area is verified. In this paper, the method of judging the blind area of geomagnetic survey and the algorithm model of eliminating the influence of blind area are proposed.

中文翻译：

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基于地磁和角速度传感器的特种飞机姿态测量

针对飞行中飞机的姿态测试问题，研究了地磁传感器和角速度传感器的组合测试技术。建立了基于组合测量的特种机侧倾姿态试验数学模型。分别推导了基于偏航角输入和俯仰角输入的特种飞机侧倾角误差模型，并基于飞机的实际飞行轨迹数据，建立了特种飞机侧倾角试验的数学模型。仿真结果表明由偏航角输入的侧倾角误差在-0.4°至0.9°之间，而由俯仰角输入的侧倾角误差在-0.4°至1.2°之间，这表明由偏航角输入的侧倾角的计算精度较高，并验证了磁测量盲区的存在。