Addressing the shortcomings of existing research—which overlooks the coupling effects between flying objects and the surrounding flow field—as well as the insufficient trajectory correction accuracy of intelligent guidance platforms during precise control processes

this paper combines computational fluid dynamics (CFD) with multibody dynamics to investigate flight trajectory correction and target tracking algorithms based on multisensor fusion. First

this paper reviews the current state of research on the aerodynamic characteristics of flying objects both domestically and internationally

points out the shortcomings of studies that simulate flow fields in isolation without coupling them to the actual equations of motion

and derives the equations of conservation of mass

momentum

and energy

as well as the turbulent transport equations and the equations of motion for the flying object. Next

the governing equations were discretized and solved using the finite volume method

thereby constructing a fluid-structure-coupled numerical simulation model of the flying object. Subsequently

flight simulation experiments were conducted in a tiered manner under various scenarios. Experimental conditions included an ideal

disturbance-free state; single disturbance factors such as aerodynamic drag

dynamic wind

and atmospheric turbulence; as well as complex environments involving the superposition of multiple disturbance factors. At the same time

guidance and tracking simulations were conducted for both stationary and moving targets to analyze the variation patterns of the three-axis control forces

dynamic wind speed

and multidimensional tracking errors. The results indicate that aerodynamic drag

dynamic wind

and turbulence can significantly deviate the flight body's trajectory. Under conditions where multiple environmental disturbances overlap

trajectory deviations are significantly exacerbated. The designed trajectory correction guidance strategy can effectively compensate for various atmospheric disturbances. In complex

combined environments

it not only achieves precise hits on stationary targets but also enables stable tracking and interception of moving targets

thereby substantially reducing the range error between the flight vehicle and the target and improving the terminal accuracy and environmental robustness of the intelligent guidance platform.