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概述了微卫星的特点和发展应用概况,简述了微卫星借助单个磁强计完成三轴姿态确定的原理;并以WMM2010模型为研究对象,介绍了确定卫星姿态的统计性方法;分析了几种不同截断阶数的地磁模型与地磁场真值的差异,指出对于定姿精度要求不高的中低轨道(数百千米)卫星,可将低阶模型作为磁场真值存储在卫星处理器中,有助于提高卫星定姿的实时性。
The characteristics of the microsatellite and its development and application are summarized. The principle of microsatellite satellite attitude determination with a single magnetometer is described briefly. The WMM2010 model is taken as the research object to introduce the statistical method to determine the attitude of the satellite. The difference between the geomagnetic model and the true value of geomagnetic field of different cutoff orders indicates that the low-order model can be stored as the true value of the magnetic field in the low-orbit (hundreds of kilometers) satellites for the satellite processor In helping to improve the real-time nature of satellite positioning.