Nowadays the major communicating mode of the ahts in china is the vhf relay channel ( vhf - rc ) 超短文自动测报系统的地理分布性决定了无线通信在该系统中的复杂性和重要性。
General specification for ground equipment of vhf air - ground communication . part 1 : technical specification for vhf equipment 甚高频地空通信地面设备通用规范.第1部分：甚高频设备技术要求
General specification for ground equipment of vhf air - ground communication . part 2 : maintenance specification for vhf equipment 甚高频地空通信地面设备通用规范.第2部分：甚高频设备维修规范
The technical regulations for frequency sharing between the broadcasting service and the mobile and fixed services in the vhf uhf bands Vhf uhf频段广播业务与移动和固定业务频率共用技术规定
Technical requirement for the installation , operation , maintenance and repair of marine navigation equipment survival craft two - way vhf radio telephone apparatus 船用通信导航设备的安装使用维护修理技术要求救生艇
In the chapter one , the article gives a brief introduction of the vhf / uhf wireless communication . some problems encountered are analyzed 在第一章中，给出了短波超短波无线通信的发展现状，并对一些问题进行了分析。
Chapter 1 introduces the extensive application and general developing condition of hf / vhf communication and hf / vhf radios in military field 第一章介绍了超短波通信和超短波跳频电台在军事领域中的广泛应用及其发展概况。
On the basis of others " research achievements , i participated in the r & d work on the digital if part of the vhf radio 本文在前人工作的基础上，吸收他人的研究成果，理论实践相结合，从事超短波军用电台数字中频模块的研制工作。
One of the important development emphases is to explore the technology and application of the vhf ( very high frequency ) data chain on the basis of tdma technology 其中一项重要的发展重点是开发基于时分多址( tdma )技术的vhf甚高频数据链的技术和应用。
Zhang x d , zhao y , zhu f , et al . fabrication of high growth rate solar - cell - quality c - si : h thin films by vhf - pecvd [ j ] . chinese physics , 2004 , 13 ( 8 ) : 1370 汪六九,朱美芳,刘丰珍,等.热丝化学气相沉积技术低温制备多晶硅薄膜的结构与光电特性[ j ] .物理学报, 2003 , 52 ( 11 ) : 2934 - 2937
