Research on tracking technology of helicopter in ice fog environment

This paper proposes a research method suitable for portable trajectory tracking and positioning in small sites. This system combines Beidou system (BDS) and inertial navigation system (INS), which can adapt to the complex electromagnetic environment under ice fog environment, meet the timeliness of trajectory positioning and meet the confidentiality. With the help of BDS to do the overall positioning of the test site, build the absolute coordinate system, clarify the area range of the test site and the position of the spray tower, and then import the tracking and positioning information of INS into the absolute coordinate system of BDS, so as to realize the trajectory tracking and positioning in the process of helicopter hovering.