【摘要】 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。更多还原

【Abstract】 A brief description of the specificity and utility of micro-satellites,and a short introduction of the principle of three-axis attitude determination by single magnetometer are given.Based on the model named WMM2010,this paper presents the statistical method of the satellites’ attitude,mainly analyzes the difference between the value of various geomagnetic truncation models and the real value,at last indicates that when the required precision is not extraordinary exact,low order models can be used as the real value stored in the satellite memory to improve the real-time attitude determination for the micro-satellites in middle or low orbits.更多还原