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日本用于商业的太空开发政策是由政府独立自主地制定.过去十五年来,日本政府实施的发展项目是以独立发展整套卫星技术为目标,从发射设备、追踪站、火箭制造到卫星研制全由日本包办.但这一发展的规模尚不能满足一些卫星服务的用户,尤其是日本电讯公司(NTT)的需求.现在日本面临的问题是,要末靠国外的火箭来发射重量体积越来越大的卫星,要末自己来制造更强有力的火箭;前者将有悖于日本主张的独立自主的政策,后者则会使日本投入更大的资金并耗费更长的时间.
Japan’s space development policy for commercial use has been set up independently by the government, and the development project implemented by the Japanese government over the past 15 years has been based on the independent development of a complete set of satellite technologies, ranging from launch equipment, tracking stations, rocket manufacturing to satellite development Japan, but the scale of this development can not meet the needs of some satellite service users, especially the NTT.Now Japan is facing the problem that it is necessary to rely on foreign rocket to launch the weight of the volume is increasing Of the satellites, or to create their own more powerful rocket; the former will be contrary to Japan’s stand-alone policy, which will make Japan invested more funds and take longer.