【摘要】 本文首先定性分析了同轴电缆传输系统投资相对于传输容量和距离的两个数学模型,然后主要依据邮电部设计院1984年公布的统计资料,拟合出定量的这两个模型和绘制出相应曲线,并证明这两个模型是一致的。这两个模型可用于同轴电缆传输系统的投资估算,也可作为和微波、光纤、卫星传输系统进行经济比较的依据。更多还原

【Abstract】 In this paper,we first analyse two mathematical models of coaxial cable trans- mission system’s investment against capacity and distance qualitatively,then give the models and the curves quantitatively,mainly according to the statistics issued by Designing Institute of Ministry of Posts and Telecommunications in 1984,and prove that the two models are identical. The two models can be used for estimating the investment of coaxial cable transmission system and contrasting the investment with that of microwave,light- wave and satellite transmission systems.更多还原