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Design and Validation of a New Algorithm for the Online Computation of the Earth's Magnetic Field Model

机译:在线计算地球磁场模型的新算法的设计与验证

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摘要

Especially in navigation applications the sensor information alone is usually not sufficient and also reference world models are required. In case of magnetometer this model is the geomagnetic field of Earth. The models are as important as the sensors themselves and the real-time computation requirements demand the algorithms to be not only precise and stable but also fast and memory efficient. This paper proposes a singularity-free algorithm resulting from adaptation of the classical Legendre method to natively Cartesian coordinates. The method eventually turns out to be similar to the famous Pines algorithm. The performance is evaluated based on geomagnetic field computation for RASAT orbit, which provides almost full global coverage due to its sun-synchronous orbit, and compared to publicly available NOAA dataset.
机译:特别是在导航应用中,仅传感器信息通常是不够的,并且还需要参考世界模型。在磁力计的情况下,该模型是地球的地磁场。这些模型与传感器本身一样重要,并且实时计算要求要求算法不仅精确且稳定,而且要快速且具有存储效率。本文提出了一种无奇点算法,该算法源自经典Legendre方法对本机笛卡尔坐标的适应。最终,该方法类似于著名的Pines算法。该性能是根据RASAT轨道的地磁场计算进行评估的,该轨道由于其太阳同步轨道而几乎提供了完整的全球覆盖范围,并与公开的NOAA数据集进行了比较。

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