Research on UAV Fixed-Point Placement Based on Difference Method and Variable Step Traversal

In this paper, the relevant model of UAV fixed-point delivery is established by using the relevant laws of aerodynamics. In this paper, wind speed, flight speed and air resistance are decomposed, and the proportional relationship between launch speed and flight speed is set. When the explosive reaches the target point, the displacement of the explosive in the three directions of x, y and z is calculated, and the function expression of the launching distance r is calculated. At the same time, the boundary constraints on the model are added. In this paper, the variable step size traversal method is used to continuously change the step size to solve the decision in the range. Finally, the flight strategy under different wind direction and dive Angle is obtained. It is also found that when the dive Angle is greater than 52.857°, there is no suitable flight strategy. Based on the delivery model established in this paper, it is helpful to give the strategy of UAV delivery under specific conditions, and it will play a great role in many fields.