A recently proposed navigation methodology for aerial platforms based on the vehicle\ndynamic model (VDM) has shown promising results in terms of navigation autonomy. Its practical\nrealization requires that control inputs are related to the same absolute time frame as inertial\nmeasurement unit (IMU) data and all other observations when available (e.g., global navigation\nsatellite system (GNSS) position, barometric altitude, etc.). This study analyzes the (non-) tolerances\nof possible delays in control-input command with respect to navigation performance on a fixed-wing\nunmanned aerial vehicle (UAV). Multiple simulations using two emulated trajectories based on real\nflights reveal the vital importance of correct time-tagging of servo data while that of motor data\nturned out to be tolerable to a considerably large extent.
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