Deep Space Exploration Strategy Based on Distant Retrograde Orbits Space Station

To improve the utilization rate of DRO, reduce the cost of human lunar and human mars exploration mission, and exploit space between earth and moon, this paper studied human lunar and mars exploration flight modes based on DRO space station. Firstly, the mission profile of human lunar and mars exploration flight mode based on DRO space station is analyzed by comparing with the direct round-trip lunar flight mode. The human lunar and mars exploration mission can be decoupled into the human space transportation mission and the lunar or mars landing mission by the DRO space station. Then, a flight mode evaluation model is established to analyze and evaluate quantitatively the advantages and disadvantages of the flight modes based on the DRO space station. The evaluation results show that the flight mode based on the DRO space station is a optimal flight mode.