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- Very Fast Frequency Hopping 甚快频率跳跃
- Fast frequency hopping avoids interference. 快速跳频避免干扰。
- 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 performance of Turbo coded optical fast frequency hopping CDMA network(FFH OCDMA) using binary PPM modulation(BPPM) was analyzed. 在不考虑噪声和仅考虑散粒噪声两种情况下 ;分析了 Turbo码对二进制脉冲位置调制( BPPM)的快跳频光码分多址 ( FFH OCDMA)系统性能的影响 ;并对该系统进行了数值模拟 .
- A new chaotic spread spectrum communication system FFH-FMDCSK is presented, which is based on FMDCSK and fast frequency hopping techniques. 本文提出一种基于差分混沌频率调制(FMDCSK)的快速跳频扩谱通信系统(简称FFH-FMDCSK)。
- FFH-OFDM combines fast frequency hopping (FFH) with regular OFDM symbols, and it shows better performance in anti-fading of time-varying multi-path. 摘要快速跳频正交频分复用(FFH-OFDM)在常规的OFDM符号中加入快速跳频预编码矩阵(FFH)，使其在多径时变的衰落环境下具有良好的抗衰落性能。
- Design criteria for such signal source are derived, upon which one can choose the PLL loop bandwidth by trade-off considerations, to get a relatively low BER, simultaneously obtain low spurious output and fast frequency hopping as well. 为了减小相噪对系统性能的影响，导出了此类信号源的设计判据，据此可基于折衷考虑选取环路带宽，以便同时获得较低的误码率，以及低的寄生输出和较快的频率跳变速度。
- fast frequency hopping synthesizers 快速跳频源
- He worked very fast, insomuch that he was through in an hour. 他工作得很快，一小时内便做完了。
- A car overtook me although I was going very fast. 我虽然开得很快，还是被一辆汽车超前了。
- I can move very fast across the ice on skates. 我穿着冰鞋在冰上滑得很快。
- If you run very fast, you may lose your breath. 如果你跑得很快，你可能会喘不过气来。
- I'm not getting on very fast with this job. 我这份工作进展不太快。
- Her heart was pumping very fast. 她的心脏跳得很快。
- MICROPROCESSOR USED FOR THE CONTROL OF FAST FREQUENCY HOPPING PATTERN 微处理器用于快跳频图案控制
- I had to walk very fast to overtake you. 我不得不快走才能赶过你。
- Prices have been rising very fast, but they should even out now. 物价一直上涨得很快，但现在总该稳定一点了。
- Ostrich is a type of large bird that can run very fast. 鸵鸟是一种跑得很快的大鸟。
