Multi-sensor-based micro-satellite attitude determination method
一种微小卫星、确定方法的技术,应用在仪器、测量装置、测绘与导航等方向,能够解决计算量大、发散、收敛缓慢等问题
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[0086] Such as figure 1 As shown, it is the basic principle diagram of the attitude determination method based on multiple sensors in the present invention. MEMS gyro is selected as the main attitude sensor, and the magnetometer and sun sensor are used as the auxiliary attitude sensors. An improved federated filtering algorithm is designed to perform Attitude calculation and information fusion.
[0087] Such as figure 2 The basic principle diagram of the improved federated filtering algorithm in the present invention shows that the improved federated filtering algorithm in the present invention is mainly composed of two sub-filters S1, S2 and a main filter M1, and adopts a fusion-feedback structure. The sub-filter S1 completes the measurement update of the magnetometer, and the sub-filter S2 completes the measurement update of the sun sensor; while in the main filter, the MEMS gyro angular velocity integration, state prediction, data fusion and final attitude determination r...
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