一、概况日本自1955年.由工业科学协会在东京大学发射了第一支大气层探测火箭以来,就开始了其空间研究活动。终于在1970年2月11日,把日本第一个卫星——重24公斤的“大隅”号卫星送入了地球轨道。从此以后,日本计划从72年到77年这断时间中,每年平均发射二至三个卫星。现在已发射了试验卫星“诞生”,科学卫星1号“新生”和科学卫星2号“电波”(见表1)等,每年的费用达3668000百日元(见表2)。 I. Overview Japan has started its space research activities since 1955 when the Association for Industrial Science launched its first atmospheric exploration vehicle at the University of Tokyo. Finally, on February 11, 1970, Japan’s first satellite, the Daiyu, weighing 24 kilos, was put into orbit. Since then, Japan plans to launch an average of two to three satellites a year from 72 to 77 this off-season. The experimental satellite “Nativity”, “Ss Singula 1” and “Satellites 2” (see Table 1) have now been launched, costing 3668,000 yen a year (Table 2).