Bearing-only passive positioning model of UAV based on Newton iteration method
As the functions and application areas of UAV continue to expand,the accuracy and speed of UAV passive positioning have also become a research hotspot.The angular relationship between the UAV in the for-mation is used to establish a mathematical model with the position coordinates in the rectangular coordinate system as variables.The pure bearing passive positioning problem of UAV is transformed into a problem of sol-ving a set of nonlinear equations.The Newton iteration method is used to offset the ideal position of the UAV as the initial value of the iteration.For both circular and triangular formations,the feasibility of the model and al-gorithm is verified through simulation.The simulation results show that the algorithm has the characteristics of short positioning time and controllable error,and is suitable for a variety of formation schemes.It provides a new method for solving the problem of UAV formation flight positioning and has certain application value.