shortwave communication

Research on the Feasibility of Shortwave Communication at Sea under the Condition of Atmosphere Yawp

大气噪声条件下海上短波通信可通性研究

This paper introduces a type of shortwave MODEM software program applied in a semiduplex SW transmitter-receiver, analyses the realization of communication between SW MODEM and computer serial port and thoroughly relates several key techniques of communication.

介绍一种用VC++创建的动态链接库DLL，应用于收发一体半双工短波电台的短波MODEM软件编程，并分析短波MODEM与计算机串口通信实现的方法，详细阐述其通信编程中几个关键技术。

Shortwave communication channel have the characteristics of multipath debilitating and Doppler frequency shifting.

针对短波通信信道的多径衰落和多普勒频移特性，研究了同步和信道均衡的相关算法。

As its characteristic of good survivability, easy network building and cheap costing, shortwave communication takes an important part of military telecommunication, which is used to send telegraph, data and static image.

在现代化战争中，短波通信因其特有的抗毁性强、组网灵活及成本低廉等特点，决定其在军用远程通信中地位极其重要，被广泛用于电报、数据及静态图像的传输。

The terminal can interface with various different systems and different types of shortwave 、 ultrashortwave transmitter-receiver, having the very strong suitability and agility, can be used for the communication duty, also can be used for the telegraph training.

该终端可同目前部队装备的多种不同制式、不同型号的短波、超短波电台接口，具有很强的适应性和灵活性，既可用于通信值勤，也可用于报务训练。

Shortwave antenna tuning coupler is an important part of shortwave communication systems. This paper introduces a tuning algorithm of shortwave antenna tuning coupler based on vector impedance measuring module. With this algorithm, some improvement has been made for the performance of shortwave antenna tuning coupler.

短波天线调谐器是短波通信系统的重要组成部分，现介绍一种基于矢量阻抗测量模块的短波天线调谐器的调谐算法，可以改善短波天线调谐器的性能。

Wireless pipeline modeling methods shortwave communication, are discussed in details.

特别是无线信道建模的方法, 详细分析了无线管道建模的14个阶段.

This method has been implemented in shortwave communication, and gets good gains.

这种方案已经在实际中得到了应用, 并取得了良好的效果.