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本文介绍我所研制的野外携带式数字通信设备。野外携带式数字通信设备,有如下一些苛刻的特殊要求:严格限制体积、重量、功耗,便于单人携带;高传输可靠性,以适应多种差劣的有线、无线信道;瞬时启动、瞬间通信,以不失时机;操作简便,并适应恶劣的工作环境等。本文讨论了为实现这些要求所采用的调制、同步、误差控制方案和必须解决的通话与传码兼容、数字设备对电台的干扰、瞬时供电、显示技术等问题。
This article describes the field portable digital communications equipment I developed. Field portable digital communications equipment, has the following harsh special requirements: strict restrictions on size, weight, power consumption, easy to carry; high transmission reliability, to adapt to a variety of poor wired and wireless channels; instant start, instant Communications, in order to lose no time; easy to operate, and adapt to harsh working conditions. This article discusses the modulation, synchronization, error control schemes used to implement these requirements, and the compatibility of calls and codes that must be addressed, the interference of digital equipment to stations, instantaneous powering, and display techniques.