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中文摘要：
设计了由陀螺、GPS姿态敏感器、红外地平仪和太阳敏感器构成的太阳同步极轨卫星姿态确定系统。提出联邦滤波器结构和算法，推导了各子系统的量测方程和姿态确定系统的误差状态方程。为规避对量测值进行非相关处理，采用减小GPS姿态敏感器输出的姿态滤波值作为系统滤波器量测值的频率的方法。仿真结果表明，采用联邦滤波器对多敏感器卫星姿态确定系统进行信息融合，具有计算量小、精度高、可靠性好等优点。
英文摘要：
A sun synchronous polar satellite attitude determination system composed of gyros, GPS sensors, sun sensors and infrared horizon sensors was designed. Federated filter structure and algorithm of the attitude determination system are proposed, and then the measurement equations of all sensors and the error state equation of attitude determination system were deduced. To avoid the noncorrelation processing, the attitude filtering value which decreases the GPS sensor output was utilized as the frequency of the system measurement. Simulation results show that federated filtering based information fusion method for the multi-sensor satellite system is characterized by small computation cost, high precision and good reliability. Key words
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