一、绪言 1.1 报告的目的为阿波罗登月飞行而正在研制中的统一S波段(译注:S波段为1550-5200兆赫)通信和跟踪系统至今未整理出完整的资料。虽然有一些分系统的资料,但尚无基本的系统设计、性能、操作及其限度的完整的系统资料。 I. INTRODUCTION 1.1 The complete SOS-compliant communications and tracking system currently under development for the Apollo missionary lunar flight has not yet been fully compiled. Although there are some sub-system information, but there is no basic system design, performance, operation and the complete range of system information.