On-orbit real-time magnetometer bias determination for micro-satellites without attitude information  

作　　者：Zhang Zhen Xiong Jianping Jin Jin 

机构地区：[1]Department of Precision Instrument, Tsinghua University [2]Space Center, Tsinghua University

出　　处：《Chinese Journal of Aeronautics》2015年第5期1503-1509,共7页中国航空学报（英文版）

摘　　要：Due to the disadvantages such as complex calculation, low accuracy of estimation, and being non real time in present methods, a new real-time algorithm is developed for on-orbit mag- netometer bias determination of micro-satellites without attitude knowledge in this paper. This method uses the differential value approach. It avoids the impact of quartic nature and uses the iterative method to satisfy real-time applications. Simulation results indicate that the new real-time algorithm is more accurate compared with other methods, which are also tested by an experiment system using real noise data. With the new real-time algorithm, a magnetometer calibration can be taken on-orbit and will reduce the demand for computing power effectively.Due to the disadvantages such as complex calculation, low accuracy of estimation, and being non real time in present methods, a new real-time algorithm is developed for on-orbit mag- netometer bias determination of micro-satellites without attitude knowledge in this paper. This method uses the differential value approach. It avoids the impact of quartic nature and uses the iterative method to satisfy real-time applications. Simulation results indicate that the new real-time algorithm is more accurate compared with other methods, which are also tested by an experiment system using real noise data. With the new real-time algorithm, a magnetometer calibration can be taken on-orbit and will reduce the demand for computing power effectively.

关 键 词：Magnetometer bias：On-orbit determinationMicro-satellite Attitude-independent REAL-TIME 

分 类 号：V448[航空宇航科学与技术—飞行器设计] V412.42