و آر ایل:https://www.researchgate.net/publication/331592849/figure/fig5/AS:961388541378564@1606224298130/a-Satellite-centered-coordinate-system-and-true-view-angles-b-True-view-representation.png
و آر ایل:https://www.researchgate.net/figure/a-Satellite-centered-coordinate-system-and-true-view-angles-b-True-view-representation_fig5_331592849
