A New Method of Distance Measuring Based on Frame Synchronization Code for Airborne Target Drone

For the application of airborne target drone, a distance measuring algorithm based on frame synchronizing code is presented. Taking the wireless data link of a airborne target drone for example, this paper elaborates the method that takes the synchronizing code of the data link frame in wireless telecontrol (TC) and telemetering (TM) as the measuring code, and gives out the principle of the measurement, the design of the circuit and the analysis of the error. Regarding the ground control station as the zero distance benchmark, comparing the radar identified flight data and the airborne target drone measured data, these two are well fitting in plot. Besides, the mean square error of the distance that airborne target drone measured is in range of 20 m, which meets the demanded error in range of 30 m. Many types of airborne target drones and many flight experimentations show that this method is simple, good-precision, low channel energy spent and low system cost. This method can also be applied to other wireless system that needs measuring continuously in range of 300 km