The principle of FH communication is described.
简述了跳频通信的基本原理。
It is importance for us to exert the battle efficiency and improve the battle effectiveness of FH communication systems.
对正确应用跳频通信系统和提高其战斗效能具有重要意义。
As is known it is difficult to design good FH code and synchronize the transmitter and receiver in a chaotic FH communication system.
众所周知，设计好的跳频码和在混沌跳频通信系统中实现收发双方的同步是很困难的。
In this thesis, a new quasi-synchronous multiple access scheme suitable for FH communication system employing NHZ hopping code is proposed.
为了利用无碰撞区跳频码的特点，论文提出了一种适用于基于无碰撞区跳频码跳频通信系统的多址接入准同步组网方案。
Therefore, it has a practical significance to develop some fit methods of modulation with high spectrum efficiency for shortwave FH communication system.
因而，研究适合于高速数据传输的跳频通信特点且具有高效频谱利用率的调制技术具有重要的实际意义。
The dissertation designs and implements the system of data transmission with FH communication in underwater seas, which is performed in field test in Xiamen Harbor.
论文完整地设计并实现了一套能适用于浅海的抗多途水声跳频数据传输系统，并经过了水池和厦门港的海上现场实验验证。
A digital VHF FH communication system is introduced, followed by its timing, the format of the data transmitted, the synchronization method and the keeping of synchronization.
文中介绍了一种数字化超短波跳频通信系统，并着重讨论了其系统定时、发送数据格式、同步的实现方式、同步保持等关键技术。
New interference methods, such as sweeping frequency interference and faster-hop-collision interference, become a new focus of electronic countermeasures to FH communication systems.
扫频式干扰、更高跳速碰撞干扰等新的干扰方法成为跳频通信系统电子对抗领域中又一重要研究方向。
Based on the requests of synchronization for a high-speed FH communication system, we achieved synchronization by using a method combined synchronization-head with time of day (TOD).
针对高速跳频通信系统中同步的要求，采用同步头与时间信息相结合的方法实现跳频同步。
Modern FH communication system need transmit a mass of data, traditional modulations are no longer suitable for high-speed data transmitting in FH system due to low spectrum efficiency.
现代跳频系统需要传输大量数据信息，传统调制方式由于频谱利用率低而不适合跳频系统的高速数据传输。
Therefore, based on researching FH communication systems, the influence of part time-resident interference on FH communications synchronization and its tracking has been mainly analyzed.
为此，在对跳频通信系统研究基础上，重点分析了部分驻留时间干扰对跳频通信系统同步及跟踪的影响。
This paper states the traits of FH communication, and discusses the paradox of the digital strip scan technique that can analyze the reconnaissance probability of the shipboard FH radio.
本文概述了跳频通信的特点，讨论了对舰载跳频通信信号的侦察概率进行分析的数字式步进搜索技术所要解决的问题，并对其分析结果进行了仿真。
The No-Hit-Zone (NHZ) hopping code is employed by the frequency hopper of NHZ FH communication systems, which have no hits at all within a predefined correlation zone in the vicinity of zero shift.
无碰撞区跳频通信系统的跳频器所使用的跳频码是无碰撞区跳频码，该码在零位移附近一段区域内汉明相关值为零。
This subject comes from a military development project - Digital VHF FH Radio Set, and it is mainly used for the data communication between navy vessels.
本课题来自军事开发项目——数字化超短波跳频电台，主要用于海军舰艇之间的数据通信。
Network of the shortwave FH radio is significant in the military communication, also the applications of network can improve the anti-jamming capability of the shortwave FH radio.
短波跳频电台组网在军事通信中占有重要地位，组网应用可以提高跳频电台的抗干扰性能。
A novel adaptive line enhancer (ALE) with high frequency resolution was presented, which suitable for underwater acoustic communication with MFSK or frequency hopping (FH) modulation.
根据水声mfsk或跳频通信中频率估计特点，提出了一种基于自适应线谱增强器(ale)理论的实用高分辨频率估计新方法。
Synchronization is one of the key techniques to frequency-hopping (FH) communication system.
同步是跳频通信系统关键技术之一。
The paper introduces the composition and the operation mode of frequency hopping (FH) communication system and the design requirement of frequency hopping synthesizer.
介绍了跳频通信系统的基本组成、工作方式以及跳频通信系统中跳频综合器的设计要求。
The FH (Frequency Hopping) communication technology is the most important part of anti jamming communication. FH pattern is the key in FH system.
跳频通信技术是一种重要的抗干扰通信技术，跳频图案的设计是跳频通信中的一项关键技术。
So researching the surveillance, interception and classification methods for FH signals has been a difficult and pressing task in communication countermeasure fields.
开展对跳频通信对抗的研究，寻求截获，分选识别跳频通信信号方法，已成了当前通信对抗领域紧迫而困难的任务之一。
Hopping frequency (FH) communication technology is the important part of spread spectrum communication, which is widely applied in anti-jamming communication.
跳频技术是扩频通信中的一种抗干扰的实用技术。
Aiming at the actual application of communication countermeasure, a new method about accurately estimating the hop duration was proposed for the Frequency-Hopping (FH) signals.
针对通信对抗的实际应用，提出了一种精确估计跳频信号跳周期的新方法。
In the spread spectrum communication, direct sequence spread spectrum (DSSS) and frequency hopping (FH) are the two kinds of most widely used spread spectrum technologies.
在扩频通信技术中，直接序列扩频和跳频是应用最广的两种扩频技术。
The advantages of strong anti-interference, random address selection make shortwave frequency-hopping (FH) communication have a wide application in the areas of military.
短波跳频通信具有较强的抗干扰能力和任意选址等优点而在军事通信领域得到了广泛的应用。
The models implement all functions of the FH radio, and describe the actions of frequency-hopping communication exactly.
模型实现了跳频电台的各项功能，准确描述了该跳频无线通信网络的通信行为。
A timing and frequency synchronization scheme based on FH sequence is proposed for the free space optical communication Orthogonal frequency Division Multiplexing (FSO-OFDM).
提出了一种基于FH序列的自由空间光通信多载波调制(FSO - OFDM)时间频率同步方案。
Over the past few decades, frequency-hopping (FH) communication system is widely used in military applications for its well performance.
跳频通信是扩频通信的一个分支，它的突出优点是抗干扰性强，因而很适用于军事领域。
Programmer, graduated from FH Offenburg with a degree in Communication and Media Engineering, now lives in Baden-Baden, Germany.
程序员，德国奥芬堡应用科学大学传媒工程系毕业，现居德国巴登巴登。
This communication reconnaissance way to UWB high-speed FH signal has been proved an effective measure.
研究实践证明，该方法是目前进行超宽带快速跳频信号进行侦察的有效手段。
This communication reconnaissance way to UWB high-speed FH signal has been proved an effective measure.
研究实践证明，该方法是目前进行超宽带快速跳频信号进行侦察的有效手段。
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