基于D3D12的低轨卫星星座可视化建模仿真研究

Visualization and Simulation Study of the LEO Constellation Based on D3D12

摘要: 目前，低轨卫星星座在国际社会呈现蓬勃发展态势，并成为热点研究话题。低轨卫星星座的可视化建模仿真是开展低轨卫星星座的轨道构型、星间链路、路由规划、资源调度等研究的基础，现有的仿真软件还存在扩展性差、版权受限等不足。鉴于D3D12 (Direct3D12)可视化技术相比OpenGL具有更优的渲染性能，本文采用D3D12技术对低轨卫星星座进行了可视化建模仿真研究，设计了系统架构，实现了二体问题以及卫星终端可见性求解，并给出了地球、卫星、轨道、波束、星间链路以及经纬度的二三维渲染方法，最后基于UWP (Windows通用应用平台)框架进行了编程实现，通过对典型卫星星座仿真并与STK (Satellite Tool Kit)仿真结果对比验证了本文方法的可行性和有效性。

Abstract: The development of LEO Constellation is taking a flourishing state at present, and related study becomes the hot topic. Visualization and simulation study of the LEO Constellation is the foundation to study its configuration, crosslink, route-programming, resource-dispatch, and so on, yet the existing software falls short of the low expansibility and limit copyright etc. considering the drawing performance of the D3D12 visualization technique is nice than OpenGL, this paper studied the visualization and simulation of the LEO Constellation with the D3D12 technique, designed the architecture and solved the orbit equation and terminal visibility in two-body form, at the same time provided the 2D/3D drawing methods of the earth, satellite, orbit, beam, crosslink, curve of longitude and Latitude, at last realized these methods based on UWP(universal windows platform) and validated the practicability and effectiveness of these methods through the simulation of the typical LEO constellations and the comparison with STK.