The modern digital communications technology, especially the rapid development of the mobile communications technology, computer technology and satellite communicationss technology, supports the adoption of the more advanced and effective communications mode to realize the control of all kinds of traffic with favorable technical condition. 现代数字通信技术,特别是移动通信技术、计算机技术和卫星通信技术的迅猛发展,为采用更先进有效的通信方式实现科学的交通管理提供了有利的技术条件。
Distributed database ( DDB ) system is becoming one of the most active IT fields with the quick development of computer network and communications technology and wide employment of satellite communications, cellular communications, LAN, WAN, Internet and Intranet. 计算机网络与数字通信技术正得到飞速发展,卫星通信、蜂窝通信、计算机局域网、广域网和激增的Intranet及Internet的广泛应用,使分布式数据库系统应运而生,并成为计算机技术最活跃的研究领域之一。
With the development of satellite communications technology, more and more attention is paid on the CDMA small low-orbit satellite communications system. 随着卫星通信技术的不断发展,CDMA低轨道小卫星通信系统越来越受到重视。
With the speedy development on satellite communications technology, especially with establishing the project of Manned Space flight in China, the satellite communications network in General Equipments Department is extending continuously and complicating increasingly. 随着卫星通信技术的高速发展,特别是载人航天工程项目开始筹建以来,我国卫星通信网的规模不断扩大,网络复杂性日益提高。