上海航天（中英文）2024，Vol.41Issue(1)：57-65,9.DOI:10.19328/j.cnki.2096-8655.2024.01.008
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
Analysis on Lidar Scattering Characteristics of Spacecraft with Complex Surface Considering Gaussian Energy Distribution
摘要
Abstract
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.关键词
激光隐身/激光散射特性/激光雷达(Lidar)建模/Z缓冲技术/高斯能量分布Key words
laser stealth/laser scattering property/light detection and ranging(Lidar)modeling/z-buffer technology/gaussian energy distribution分类
航空航天引用本文复制引用
程勋龙,康国华,邱钰桓,武俊峰,吴佳奇,尹一蓁..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[J].上海航天（中英文）,2024,41(1):57-65,9.基金项目
江苏省双创人才项目(JSSCBS20210181) （JSSCBS20210181）
国家自然科学基金面上项目(12272168) （12272168）
