考虑高斯能量分布的复杂表面航天器激光雷达散射特性分析OA北大核心CSTPCD

In view of the problem of inaccurate scattering simulation of complex surface spacecraft under laser radar illumination,a solution through surface modeling and laser characteristics correction is proposed.First,the Gaussian energy distribution method is used to modify the laser beam model.Then,the challenge of complex surface modeling for spacecraft is tackled by means of the improved Z-buffer hidden surface removal algorithm based on the finite element method,considering the complex surface characteristics such as non-smoothness,discontinuity,and multiple materials.Finally,a calculation method for the laser radar cross section of complex surface spacecraft is developed.The simulation analysis indicates that the accuracy of the laser radar cross section under different spacecraft attitudes is improved by 14.58％,which lays a foundation for the subsequent stealth design targeted at laser radar systems.