Research on Improvement and Testing System of GNSS Navigation for High-Speed Spiral Micro Aerospace Vehicle

GNSS navigation is one of the most effective means for high-precision autonomous navigation of micro cross domain aerospace vehicles in the high-speed spiral motion. Due to the particularity of scenes, GNSS devices needs to withstand extremely high speeds, short-term high overload and high-speed rotations impacts in the direction of motion, with rapid changes in signal reception. This is significantly different from the application of conventional drones, micro satellites, unmanned vehicles, etc. GNSS devices must adapt to the requirements of different boundary conditions in multiple physical fields of electromagnetic and forces at same time. Meanwhile, due to the inability to directly simulate similar motion testing sites and conditions on the ground, the environmental adaptability verification cannot be directly achieved. This article proposes a method for decoupling electromagnetic and forces, decomposing forces on the vehicle and the variation law of electromagnetic signals under high-speed spiral motion. Targeted improvement design is carried out for GNSS design, and a laboratory segmented verification method and system are proposed and built. Environmental adaptability verification of GNSS devices is also carried out. This provides new ideas for optimizing the design and validation of navigation devices in other complex scenarios.