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。
Some technique problems in fast frequency hopping synthesis are solved by making use of a programmable time division-fractional division PLL.
该合成器采用程控时分复用小数分频锁相技术，解决了快速跳频频率合成中的诸多固难。
Fast frequency hopping avoids interference Adaptive output power minimizes interference Short data packets maximize capacity during interference.
快速跳频避免干扰可变的电源输出使干扰减小到最小采用短数据包传输增强抗干扰能力。
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 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。
The synchronization information is carried by short code, which overcomes the difficulty of correlation code transmission in fast frequency-hopping.
采用短码携带同步信息，克服了快速跳频难以携带相关码的困难。
A multistage iterative interference cancellation multiuser detection algorithm is presented for fast frequency-hopping multiple access communication systems.
提出了多级迭代干扰消除快跳频多址多用户检测算法。
For fast and accurate design and production of lumped constant bandwidth frequency-hopping(FH) narrowband filter, a load structure changing with frequency is introduced.
为了快速准确地设计并制作恒带宽窄带集总跳频滤波器，提出了一种随频率变化而 变化的负载结构。
With the fast development of the integrate circuit and DSP techniques, frequency hopping technique has gradually been general applications.
随着集成电路技术和数字信号处理技术的飞速发展，跳频技术也逐渐得到更为广泛的应用。
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。
Chapter IV chooses early-late door synchronization acquisition algorithm to design the shortwave fast frequency-hopping synchronization system.
第四章选择早迟门同步捕获法进行了的短波高速跳频系统的同步软件设计。
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。
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。
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