In this paper, we focus on shortwave fast frequency-hopping system synchronization acquisition techniques.
本文针对短波高速跳频通信系统的同步捕获技术做了详细的研究。
Finally, the OFDM modulation system and frequency-hopping system are connected by Schematic to constitute FH-OFDM modulation system.
最后用原理图输入方式把OFDM调制系统和跳频系统两个子系统相连构成FH - OF DM混合调制系统。
Chapter II studies some synchronization acquisition algorithms which is suitable for shortwave fast frequency-hopping system and deducts their theoretical performances.
第二章研究了几种适用于短波高速跳频系统的同步捕获算法，推导了这几种算法的理论性能。
The system chooses 2fsk modulation manner and appropriate hopping bandwidth from the aspect of mirror frequency restraining.
在系统设计方面，选用2fsk调制方式，并从镜像频率的抑制等方面考虑，选择了合适的跳频频带。
An acquisition method of frequency hopping signal in a TDMA system is presented in this paper.
本文提出一种时分多址跳频信号的捕获方法。
Meanwhile, synchronization is also the difficulty of the development of FH system, which needs supplicated design especially in the fast frequency hopping (FFH).
同时跳频同步也是跳频通信系统开发的难点，特别在高跳速工作时实现同步捕获和跟踪需要精心设计方案。
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。
For the good antijamming performance of the adaptive frequency hopping system, the design project of the (adaptive) frequency hopping satellite communication system is put forward in this paper.
鉴于自适应跳频系统的良好抗干扰性能，提出了一种自适应跳频卫星通信系统的设计方案。
Frequency hopping communication is a kind of communication system with strong anti-jamming capability.
跳频通信是一种具有较强抗干扰能力的通信体制。
The paper presents a new radar system based on frequency Modulated Interrupting Continuous Wave (FMICW) by exploiting the hopping frequency technique to improve the capability of HFGWR.
为提高高频地波雷达的抗干扰能力，提出了一种在线性调频中断连续波的基础上基于跳频技术的新高频地波雷达体制。
The zero-crossings of the AC voltage and digital frequency synthesizer are used in solving the two main problems in frequency hopping system-synchronization and fast frequency synthesizing.
利用电力系统三相交流电压过零点和高速数字频率合成器解决了跳频系统中同步和快速频率合成的两个关键问题。
An adaptive acquisition strategy for slow frequency hopping spread spectrum system is proposed.
提出了一种应用于跳频扩频系统的自适应捕获策略。
Secondly, a detailed analysis of frequency hopping and adaptive frequency hopping system is based on technology, including basic principles, system model and so on.
其次详细分析了跳频系统和自适应跳频系统的基础技术，包括基本原理、系统模型等内容。
Networking is the key for the frequency hopping (FH) communications to be working properly in the FH system.
在跳频通信系统中，组网是关系到跳频通信能否正常建立的关键。
Because high-speed data take up wide bandwidth, looking for one which have high efficiency modulation scheme and suitable for frequency hopping communication system is needed.
由于高速数据占用更宽的带宽，所以在调制制式上应该寻找一种适合于跳频通信特点的具有高频谱效率的调制方案。
Based on AD9954, a highly integrated frequency synthesizer, the operation and application theory of AD9954 in frequency hopping system are introduced.
在研究高集成度频率合成器ad9954的基础上，给出了AD 9954在跳频系统中的应用方案。
Frequency hopping technology has served in all kinds of communication systems with its excellent interference resistance ability, especially in short wave communication system.
跳频通信技术因其具有良好的抗干扰能力而被广泛应用于各类通信系统中，尤其是短波通信中。
Fast frequency hopping system is the system whose hop rate is above one thousand per second.
快跳频系统指每秒频率跳变在一千次以上的跳频系统。
We also introduce the application of SESS in hopping frequency, hopping time communication system and multiple access system, etc.
此外，介绍了自编码技术在跳频、跳时系统中的应用和自编码多址技术。
Considering the need of anti-jamming and secrecy in military wireless communication, model of adaptive frequency-hopping (AFH) system is given.
针对军事无线通信抗干扰和保密性需求，给出了自适应跳频通信系统模型。
The final results of experiment prove that the frequency hopping pattern based on this function is good in uniformity, so the system has high complexity and strong anti-attack features.
最后通过实例说明了由该函数产生的跳频图案具有良好的均匀性，从而系统具有较强的隐蔽性和抗破译性。
In the paper, a novel instantaneous frequency measure method, which is applicable for the frequency measure system of frequency hopping radar, is presented according to the digital phase-shift theory.
本文根据时钟数字移相原理，提出了一种新的瞬时测频方法，适用于捷变频雷达测频系统。
This paper presents a new HF frequency hopping communication system which is called correlated hopping enhanced spread spectrum (CHESS).
本文介绍了一种新型的短波跳频通信系统CHESS系统。
The frequency hopping system based on software radio, DSP is used to generate quasi-stochastic sequence and control the output frequency of DDS to construct required hopping maps.
跳频方案采用软件无线电技术，采用DSP作为伪码发生器，控制DDS输出频率，得到相应的跳频图案。
Frequency hopping is the key technology used to suppress interference in Bluetooth system.
跳频是蓝牙使用的抑制干扰的关键技术。
The calculating result in practical engineering shows that the transient effect on demodulation probability of error is very low even when the system frequency hopping is at middle-high speeds.
本文结合工程实践的计算表明，即使在中高速跳频时，暂态过程对误码率的影响也是很小的。
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。
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 final results of experiment prove that the frequency hopping pattern based on this function is good in uniformity, so the system has high complexity and STR...
最后通过实例说明了由该函数产生的跳频图案具有良好的均匀性，从而系统具有较强的隐蔽性和抗破译性。
The final results of experiment prove that the frequency hopping pattern based on this function is good in uniformity, so the system has high complexity and STR...
最后通过实例说明了由该函数产生的跳频图案具有良好的均匀性，从而系统具有较强的隐蔽性和抗破译性。
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