论文部分内容阅读
在SCPC—DAMA(单路单载波按需分配)卫星通信系统中,需要考虑SCPC—DAMA控制器与地面通信网的接口。将这些接口关系分为两类:一是与普通话机的接口;二是与中继线的接口。本文叙述了用8748单片机实现与普通电活机接口的基本原理及其软、硬件实现。该接口电路已通过与SCPC—DAMA控制器的联机实验,说明软、硬件设计合理。
In the SCPC-DAMA (single-channel, single-carrier, on-demand distribution) satellite communication system, the interface between the SCPC-DAMA controller and the terrestrial communication network needs to be considered. The relationship between these interfaces are divided into two categories: First, the interface with the phone and the second is the trunk interface. This article describes the 8748 single-chip microcomputer with the realization of the basic principle of active electrical interface and its hardware and software. The interface circuit has passed SCPC-DAMA controller online experiments, indicating that the software and hardware design is reasonable.