一种复杂外形航天器投影面积计算的Monte Carlo方法

Based on the Monte Carlo technology in statistics, combined with the theory of the intersection of a ray with a triangle, the Monte Carlo method for the calculation of Projected Cross-Sectional Areas (PCSA) of spacecraft has been proposed with elaborated procedures. The developed method is parallelized employing a shared memory programming model, OpenMP, in order to take advantage of the multiple-core processors, which has been an industry trend for many years. Then, the PCSAs of a one-side circular plate and the SAMSON satellite in some typical attitudes are calculated, aiming at validating the Monte Carlo method and demonstrating its capability of dealing with complex geometries of engineering reguirements. The proposed Monte Carlo method could be applied to the SAMSON and GOCE satellites, with the purpose of computing their PCSAs in large quantities of attitudes, in order to provide input parameters for satellite attitude and orbit control.