Based on the encryption principle of affine cipher, a frequency transition function of DFH is designed.

基于仿射密码的加密原理，构造了一种差分跳频的频转移函数。

youdao

In this paper, the characteristics of the DFH technologies are described, and the frequency transition function based on the recursive shift register is proposed.

介绍了差分跳频技术的特点，构造了一类基于回归移位寄存器的频率转移函数。

youdao

The frequency transition function in DFH system is one of the key technologies and will influences the performance of the corresponding communication system considerably.

频率转移函数是相关跳频的关键技术之一，将直接影响相关跳频通信系统的性能。

youdao

It can be caused by a number of factors, including a rapid increase in the frequency of training, sudden increase in the intensity of training, transition from one training method to another, genetic abnormalities of the knee joint and poor base strength of the quadriceps.

BBC: Hargreaves faces career concerns