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利用全球定位系统 ( GPS)确定航天器姿态是 GPS在航天器上应用的一个重要方面。分析了几种利用 GPS进行航天器姿态估计的典型算法 ,建立了 GPS姿态确定的单差和双差观测模型 ,对 GPS姿态估计的递推算法和利用航天器姿态运动信息的滤波算法进行了仿真计算 ,验证了模型和算法的有效性。最后 ,对常用的基于 GPS的航天器姿态估计算法进行了分析和讨论 ,给出了算法选择的原则。
Determining spacecraft attitude using a global positioning system (GPS) is an important aspect of the application of GPS to spacecraft. Several typical algorithms for spacecraft attitude estimation using GPS are analyzed. Single-difference and double-difference observation models for GPS attitude determination are established. The recursive algorithm of GPS attitude estimation and the filtering algorithm using spacecraft attitude motion information are simulated Calculated to verify the validity of the model and algorithm. Finally, the commonly used GPS-based spacecraft attitude estimation algorithm is analyzed and discussed, and the principle of algorithm selection is given.