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1)  HF communication
短波通信
1.
The single site passive long-range locating conception of HF communication;
单站短波通信无源远程定位构想
2.
The affection of the natural environment on HF communication;
自然环境对短波通信的影响
3.
Calculation of the lowest useable frequency for long distance HF communication;
远距离短波通信最低可用频率的计算
2)  short-wave communication
短波通信
1.
This paper presents a prediction model of frequency parameters of short-wave communication based on non-singleton fuzzy system.
提出一种利用非单点模糊系统建模的短波通信频率参数预测模型。
2.
Short-wave communication is the main means of the remote communication between ships on the sea.
短波通信是目前海上舰船实施远程通信的重要手段。
3.
This paper first introduces the evolution of adaptive short-wave communication, then presents the technologies in cooperate design of short-wave station with software radio.
介绍了自适应短波通信的发展情况,阐述了用软件无线电技术进行短波电台的相关设计的技术路径,并重点介绍了天线自动调谐与自适应频率选择技术。
3)  short wave communication
短波通信
1.
The reliability of short wave communication can be improved using a hybrid method for predictions based on chaos phase reconstruction and neural networks to predict frequency parameters.
为提高短波通信的可靠性 ,提出了一种将混沌和神经网络相结合的方法预测短波通信频率参数。
2.
The equipment of the short wave communication for telecommunication is simple and ionosphere can not be easily destroyed by man.
短波远距离通信具有设备简单、电离层不易遭受人为破坏的特点,因此,短波通信具有极其重要的战略地位。
3.
In this paper, the short wave communication system is introduced and the function, characteristic and structure of the digital exciter used in the system are explained.
介绍了短波通信系统的组成 ,阐述了数字激励器的功能、特点以及内部结构 ,着重讨论了数字激励器在软件上如何完成控制功能以及它与中心控制的串行通
4)  shortwave communication
短波通信
1.
The working principle of shortwave communication, the construction of shortwave communication network in Anhui Province and the important role it has played in earthquake preparedness and disaster reduction in resent over 10 years are introduced in this paper
本文介绍了短波通信的工作原理和安徽短波通信网的建设情况。
2.
This thesis researches the auto-detection and recognize of morse signal which is simple and applied in the shortwave communication.
本课题是研究短波通信中莫尔斯信号的自动检测和识别。
3.
How to improve data transmission speed is the primary research direction of shortwave communication system, which is also that of other communication systems.
短波通信系统研究的一个主要方向就是提高数据传输速率,这也是其它通信系统所面临的主要问题之一。
5)  high frequency communication
短波通信
1.
aiming at the characteristics of high frequency communication,the military application and the topology structure design of high frequency network are studied,and its specifi.
首先介绍了网络的拓扑结构,然后针对短波通信的特点研究了短波星形组网、树形组网和网形组网的军事应用及拓扑设计,并给出了具体的构造方法。
2.
Automatic link establishment(ALE) is one of the most important technologies in the third generation(3G) high frequency communications,with the handshake scheme being the key part.
自动链路建立(ALE)技术是第三代短波通信(3G)中的一项关键技术,握手过程是自动链路建立技术的一项重要内容。
3.
In high frequency communication, extremely low SNR communication is an expedient means.
短波通信中,极低信噪比条件通信是一种应急通信手段。
6)  short-wave/ultra-short wave communication
短波/超短波通信
补充资料:短波通信
      利用3~30兆赫波段的无线电波(波长为100~10米)传输信息的通信。
  
  短波传输主要靠天空电离层反射电波实现。由于电离层对短波波段的信号损耗小,电波的发射功率不用太大,就能传输数百到数千公里。短波通信不受高山阻挡,很适宜于一点发射,多点接收的新闻通信方式。更由于采用分集接收方式,减轻了衰落的影响,根据频率预测采用适当的通信频率,改善了短波通信的质量。通讯社广泛采用短波通信传输新闻稿件和新闻照片。但由于短波通信要受电离层的制约,当太阳黑子活动异常时或磁暴时会造成通信中断。对于长距离电路,不能保证24小时的通信,而且波段拥挤,互相干扰,通信速度低 (一般不超过100波特),误码率高。20世纪70年代以后,新闻短波干线通信已开始被卫星通信和微波通信等方式逐步取代。但通讯社仍用短波通信方式作为国际播发新闻的手段之一。
  
  短波通信设备简单,安装容易,具有机动灵活的特点,所以,对偏僻地区和突发事件的报道等都适于采用。
  

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