CAJ | 학술논문

传统模拟对讲机由于频谱利用率低、抗干扰性能差、频道开放、不具有保密性等原因已经很难满足需求。文章介绍的无线双模对讲机用于改善传统模拟对讲机抗干扰及保密性差的缺点,所提双模对讲机设计方案综合了集群和无中心两种工作模式功能,具有灵活设置与抗干扰性强的优点。文中重点设计了对讲机的软硬件结构,还对音频编解码进行了讨论分析。
전통모의대강궤유우빈보이용솔저、항간우성능차、빈도개방、불구유보밀성등원인이경흔난만족수구。문장개소적무선쌍모대강궤용우개선전통모의대강궤항간우급보밀성차적결점,소제쌍모대강궤설계방안종합료집군화무중심량충공작모식공능,구유령활설치여항간우성강적우점。문중중점설계료대강궤적연경건결구,환대음빈편해마진행료토론분석。
Traditional analog interphone has been incapable to meet the increasing applying demands for its low spectrum utilization rate, bad anti-jamming ability, unsafe channel and poor confidentiality. We introduce wireless dual modulus interphone, which is used to improve the performance such as anti-jamming ability and confidentiality of traditional analog interphone. The design of dual modulus interphone integrated the function of two modes, trunk and centerless, which has advantages of flexible and robust. The realization of the hardware and software structure of wireless interphone is focused and discussed in detail. Experiments and analysis of voice encoding and decoding are also made.