一、引言本文描述的是一种设备,它克服了在高频无线电线路上提供高质量保密语言所面临的困难,并适于在其它恶劣的线路上工作,比如可在低于正常数据传输最低标准的电话信道上工作。此外,利用积木式原理来改装设备,便能得到安全传送数据业务的多种装置。二、高频无线电线路上的话音保密问题众所周知,为了获得最高的保密质量,必得把明文消息变为数字形式,尔后经过处理,以产生准随机的比特流(以同一种数据率)用于传输。数据率的选择,取决于明文消息的质量允许降低的程度。对于语言来说,通常使用的最低速率 I. INTRODUCTION Described here is a device that overcomes the difficulties of providing a high-quality, secure language on high-frequency radio lines and that is suitable for working on other hostile lines, such as those below the normal data transmission minimum Standard phone channel to work. In addition, the use of building blocks to modify equipment, you can get a variety of safe delivery of data services devices. Second, the issue of voice privacy on high-frequency radio lines As we all know, in order to obtain the highest quality of confidentiality, it is necessary to put the plaintext message into a digital form and then processed to produce a quasi-random bit stream (at the same data rate) for transmission . The choice of data rate depends on the level of reduction allowed for the quality of the plain text message. The lowest rate commonly used for languages