Research on Micro-Nano Satellite Measurement Algorithm Based on Federal Filter

In order to determine the position and speed of the main satellite in the micro-nano satellite formation, this paper proposes a micro-nano satellite measurement algorithm based on federal filter. First, three-axis magnetometer and magnetoresistive sensor are used to measure the position and speed of the main satellite due to the uncertainty of the distribution of the geomagnetic field. Since in the place where the earth's magnetic field changes relatively, the sudden change of the satellite state will be obvious, then the strong tracking filter and the particle filter are used to solve the sudden change in the satellite motion and the low precision. Finally, the information fusion method is used to combine multiple filters to improve the performance. The simulation results show that the proposed measurement method can not only track the state of the satellite in real time, but also reduce the measurement error and achieve accurate measurement.