A new analysis of frequency hopped sequence based on time frequency presentation is proposed in the paper.
针对跳频信号的非平稳性，提出了基于时频表示的跳频信号分析方法。
The simulation results presented prove that the performance of DFH system with signal detecting by sequence is much better than the conventional frequency hopped systems over Rayleigh fading channels.
结果证实了，差分跳频通信技术和按序列检测方法的结合，使通信系统在瑞利衰落信道条件下的性能得到了比较显著的提升。
With adoption of the hopped-frequency pulses as a radar waveform for imaging targets, a novel algorithm for range-Doppler imaging of rotating targets is proposed.
该文采用跳频脉冲信号作为成像雷达信号形式，研究了一种雷达等效转台目标距离-多普勒成像的新算法。
Spread spectrum, frequency-hopped, which generates many codes over a wide frequency band.
它在很宽的频带上产生许多代码。
Shortwave non-orthodox frequency-hopped signal selection by improved time correlation arithmetic is introduced.
介绍了利用改进型的时间相关算法进行短波非正交跳频网台信号分选的方法。
The sources and effects of spurs in a rapid frequency-hopped PLL are investigated, a model for analyzing spur effect is developed, and the spur suppression ratio is defined.
系统地研究了快速跳频PLL中杂散来源，给出了环路杂散模型，定义了杂散抑制比。
The sources and effects of spurs in a rapid frequency-hopped PLL are investigated, a model for analyzing spur effect is developed, and the spur suppression ratio is defined.
系统地研究了快速跳频PLL中杂散来源，给出了环路杂散模型，定义了杂散抑制比。
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