日本太空科技发展历经冷战和冷战后两个不同时期,其发展轨迹也异于美国、中国太空事业从军事部门起步的传统做法。尽管如此,随着日本从一个军事发展受到严格限制的“半主权国家”向所谓“正常国家”迈进,在相应地经历了太空事业从民间到官方,从科学、民事领域向安全领域扩展的演变之后,日本目前已跻身世界太空强国之列。不断调整的太空研究体制、一波三折的技术探索、时隐时现的美国因素犹如“三驾马车”始终是影响日本太空事业发展的基本因素,而且必将继续对未来日本太空事业发展产生巨大影响。 Japan’s space science and technology development has gone through two different periods after the Cold War and the Cold War. Its development track is also different from the traditional practice of the United States and the Chinese space industry starting from the military sector. Nevertheless, as Japan moves from a “semi-sovereign state” that has been severely restricted in its military development toward the so-called “normal nation,” it has correspondingly experienced the transformation of its space undertaking from the private sector to the government and from the scientific and civil fields to the security Japan has now ranked among the world’s space powers after the evolution of the field expansion. The ever-changing space research system, twists and turns of the technological exploration, and the implicit American factors are like “Troika” has always been a fundamental factor affecting the development of Japan’s space industry and will continue to have a huge impact on the future development of Japan’s space industry. influences.