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1.前言约在10年前开始的卫星通信,与阿波罗为代表的宇宙火箭、电子技术的发展一起有了显著的发展,现在发展到具有5千路电话的大型通信卫星。可以予想,对卫星通信方面的需要今后会更多,在七十年代后半期,更需具有更大通信容量的卫星。对此,不仅卫星本体大型化,而且,正考虑加上原来的通信方式,引入
1. INTRODUCTION Satellite communications started about 10 years ago have shown remarkable progress with the development of space rockets and electronic technologies represented by Apollo. Now, they have developed into large-scale communications satellites with 5 thousand phones. It can be imagined that there will be more needs for satellite communications in the future. In the latter half of the 1970s, more satellites with larger communications capacity will be required. In this regard, not only is the size of the satellite itself large, but it is also considering adding the original means of communication and introducing