ffh fast frequency-hopping
ffh fast frequency-hopping
FFH快速跳频
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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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。
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