A Real-time Fusion Method of External Trajectory Measurement Data Based On Variable Difference Method

In the real-time processing of aerospace measurement and control external trajectory measurement date, an external tarajectory measurement system composed of multiple measurement devices can generate multiple types of trajectory measurement data. Due to the uncertainties of equipment accuracy and environment, the actual measured trajectory measurement data quality is also different. At present, the use of trajectory measurement data is limited to separate use, without comprehensive utilization. This paper proposes a real-time external trajectory measurement data fusion method based on variable difference method. The real-time statistical measurement random error is used to fuse external trajectory measurement data from different sources. On the premise of meeting the accuracy requirements, the application efficiency of external trajectory measurement data is improved.